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BD3818KS - 6-Channel 5.1ch Audio Processor | ROHM
BD3818KS

BD3818KS - 6-Channel 5.1ch Audio Processor | ROHM

The ROHM Semiconductor BD3818KS is a 5.1-channel sound processor that integrates a mode selector, a five-channel input selector, six-channel volume control, gain amplification, bass, treble, mixing, and dynamic bass boost. The device is supplied in an 80-SQFP package measuring 14 mm by 14 mm. According to the manufacturer datasheet, its six-channel master volume range extends from 0 to -95 dB in 1 dB steps, with mute support. An audio sound processor is a specialized semiconductor that controls and conditions multiple audio channels before they reach amplifiers or transducers. Within the broader product hierarchy, the BD3818KS belongs to the audio signal processor class, which is distinct from a power amplifier. Its role is to select sources, set channel levels, apply tone and dynamic-bass functions, and combine the resulting channels into a usable 5.1-channel signal path. The principal functions documented for the BD3818KS include independent six-channel master volume, a five-channel input selector, a gain amplifier, bass control, treble control, mixing, and dynamic bass boost. The mode and input selectors allow an audio system to route selected sources more flexibly than a fixed analog mixer. The 1 dB volume-step resolution provides finer level adjustment than a continuously variable control implemented solely with external passive components. The BD3818KS and BD3811K1 share the same 5.1-channel sound-processor concept and integrated mode and input selectors. The BD3818KS adds mixing and dynamic bass boost, while the BD3811K1 uses bass boost instead. This distinction is important when comparing the two parts because their control features are not interchangeable even though both devices are associated with the same family documentation. Typical uses include home-theater preamplifier and selector boards, multichannel amplifier control systems, car-audio controllers, and powered speakers that require centralized channel-volume and tone adjustment. The device is intended for systems in which source selection, channel balance, and low-frequency enhancement are implemented digitally or through a remote-control bus rather than by discrete potentiometers. A successful design should preserve the recommended analog signal path, connect decoupling capacitors close to the supply pins, and route all six channels consistently to the downstream amplifier inputs. Designers should also verify the exact control logic, reference-voltage requirements, supported input levels, and unused-pin treatment against the manufacturer datasheet before releasing production artwork. This page consolidates the verified product identity, package information, distributor availability references, function summary, family comparison, and design considerations for the BD3818KS. It also identifies which electrical, pin-level, pricing, compliance, and lifecycle details still require confirmation from the original manufacturer documents.

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BD3822FS-E2 - Dual-Channel Audio I/O IC | ROHM Semiconductor
BD3822FS-E2

BD3822FS-E2 - Dual-Channel Audio I/O IC | ROHM Semiconductor

ROHM Semiconductor BD3822FS-E2 is a dual-channel audio signal processor and NTSC/PAL audio I/O interface designed for recording and playback equipment such as DVD recorders. The device is specified for a 9 V operating supply, an ambient operating range of -40°C to +85°C, and a 32-pin SSOP package measuring 5.40 mm in width with 0.8 mm lead pitch. Its primary role is to condition and route audio signals within consumer video and audio equipment. An audio I/O interface is a type of signal-processing integrated circuit that connects analog audio circuitry to the recording or playback signal path. It belongs to the broader audio IC hierarchy, which includes audio amplifiers, codecs, signal processors, converters, and interface controllers. Unlike a power amplifier that primarily drives speakers or headphones, the BD3822FS-E2 manages signal compatibility, channel processing, and system-level audio routing. The BD3822FS-E2 provides two audio channels in a compact 32-pin SSOP-A package. This channel count allows a dual-channel audio path in equipment that must support both recording and playback functions. The 0.8 mm package pitch supports high-density board layouts while retaining a package format commonly used in consumer electronics and legacy multimedia systems. Its stated 9 V supply requirement places it in equipment designed around a nominal 9 V analog power rail. The device is identified as a multi-functional gate and audio I/O interface supporting NTSC and PAL video-system audio applications. This positioning makes it relevant to DVD recorders and related NTSC/PAL audiovisual equipment. Because the interface operates on analog audio signals, board design must account for grounding, signal routing, input/output isolation, and the separation of analog and digital power or return paths where both coexist on the same board. Typical uses include DVD recorder audio boards, NTSC and PAL video equipment, dual-channel recording interfaces, and legacy consumer audiovisual systems. In these applications, the BD3822FS-E2 can serve as the central audio I/O block when the surrounding circuit requires coordinated handling of left and right audio paths. Its operating-temperature range covers both commercial and industrial ambient conditions, although each assembly still requires normal thermal and signal-integrity validation. When designing a replacement circuit, verify the complete pin assignment, exposed connections, power sequencing, and external component requirements against the ROHM Semiconductor BD3822FS datasheet before connecting the IC. The package dimensions alone do not establish pin compatibility. In particular, analog input and output routing, supply decoupling, control logic, and any external crystal or timing components must match the original board architecture. This product record combines the BD3822FS-E2 device identity, package information, documented operating conditions, source links, and application guidance. It also distinguishes the exact -E2 ordering code from the broader BD3822FS family and identifies where engineering verification is required before using the device as a drop-in replacement on an existing PCB.

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BD3823FV-E2 5-Channel Audio Processor | ROHM Semiconductor
BD3823FV-E2

BD3823FV-E2 5-Channel Audio Processor | ROHM Semiconductor

The ROHM Semiconductor BD3823FV-E2 is a 5-channel audio signal processor with a 3.2 uVrms low-noise specification, 0.0015% low distortion, and a 20-pin SSOP-B surface-mount package. It operates from 7 V to 14.5 V and supports NTSC and PAL audio systems. The device combines channel selection with a resistor-ladder volume function for multichannel audio recording equipment. An audio signal processor is an interface IC that conditions, selects, and controls multiple audio paths within an entertainment system. Its place in the product hierarchy is audio signal processor, interface IC, audio subsystem, and electronic control component. The BD3823FV-E2 is intended specifically for DVD recorders and related consumer-video equipment where several standard audio channels must be routed while keeping the reproduced signal quiet and acoustically transparent. The primary features include five-channel selection, low output noise of 3.2 uVrms, and low distortion of 0.0015%. Its 7 V to 14.5 V operating range accommodates the supply voltages commonly found in multi-rail consumer-electronics equipment, while its -40°C to +85°C operating-temperature range supports industrial temperature conditions. An I2C interface permits a host controller to configure the processor rather than relying exclusively on mechanical switches. The 20-pin SSOP-B package uses surface-mount technology and provides a compact implementation for audio-processing functions. Because the package has closely spaced leads, assembly processes should be qualified for the specified lead pitch and soldering profile. The device integrates multiple signal-processing functions instead of requiring a separate selector and volume-control arrangement, reducing the number of discrete signal-path components in a DVD recorder. Typical uses include DVD recorder audio routing, NTSC and PAL video-system audio interfaces, multichannel consumer-audio selection, and embedded audio-control subsystems. The processor can serve as the central interface between audio sources, amplifier or codec stages, and the recorder's system controller. Its low-noise and low-distortion characteristics are especially relevant where preserving the original recording signal is more important than simply switching channels. Design the power rails so that the 7 V to 14.5 V operating range is maintained under load, and place the device's decoupling capacitors close to the supply and ground connections. Confirm the board footprint and pin orientation against the ROHM Semiconductor datasheet before layout release. PCB review should also check signal return paths, ground continuity, and keepouts around the SSOP-B leads. This page combines the ROHM Semiconductor device description, package and operating characteristics, sourcing guidance, and practical design considerations into a focused engineering reference. It also distinguishes documented functions from parameters that require confirmation in the manufacturer datasheet, helping engineers evaluate the BD3823FV-E2 before committing a board design to this specialized audio interface.

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BD3824FS-E2 - 2-Ch I2C Audio Signal Processor | ROHM | SSOP-32
BD3824FS-E2

BD3824FS-E2 - 2-Ch I2C Audio Signal Processor | ROHM | SSOP-32

The ROHM Semiconductor BD3824FS-E2 is a single-chip 2-channel audio signal processor (audio I/O interface IC) built for NTSC/PAL DVD recorder and DVD player audio paths, housed in a 32-pin SSOP-A32 (PDSO32) surface-mount package. It operates from a single 9 V analog supply, is specified over -40 °C to +85 °C ambient, and is fabricated on a BICMOS process. An audio signal processor, also called a sound processor or audio I/O interface IC, is a mixed-signal block that sits between the analog line/tuner input stage and the system's digital-audio or DAC subsystem. Its job is to select the correct source, apply programmable gain and volume, and provide automatic level control so that recorded and played-back material keeps consistent loudness. In the broader hierarchy it belongs to signal-chain ICs -> audio processing -> audio amplifiers and special-purpose analog ICs. The BD3824FS integrates a 5-channel input selector, input gain control, tuner gain control, automatic level control (ALC), a line amplifier, a 2-channel volume control circuit and a power-save ON/OFF function, all addressed over an I2C bus. Because every gain stage is digitally trimmable, a single board revision can serve multiple tuner and line-input routings without changing external passive networks. The datasheet also highlights low distortion and low noise as primary design targets for the audio path. Because the I2C interface, ALC loop and volume block share one silicon die, the chip reduces external op-amps, switches and log/antilog networks. The BD3822FS sibling covers the level-meter and volume role, while BD3824FS covers the line-amplifier role; the two parts are pin compatible, so one board pattern supports both a high-end and a low-end model. Typical uses include DVD recorder and DVD player analog audio boards, NTSC/PAL video deck audio front ends, set-top and video/audio combination decks, and other legacy consumer playback/record equipment that still relies on I2C-programmable analog level control. When laying out the board, keep the I2C pull-ups short and route them away from the audio input traces; the ALC and gain stages amplify whatever noise couples in from the input pins. Also respect the single 9 V analog rail and decouple it locally, since supply ripple modulates the gain stages and the ALC detector. This page brings together the distributor channel listings, the pin-compatible family relationship between BD3822FS and BD3824FS, and practical design notes on I2C control, ALC behaviour and analog layout that are not collected together in the manufacturer datasheet.

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BD3825FS-E2 - 2-Channel Audio Switch | ROHM Semiconductor
BD3825FS-E2

BD3825FS-E2 - 2-Channel Audio Switch | ROHM Semiconductor

The ROHM Semiconductor BD3825FS-E2 is a two-channel audio switch IC intended for DVD recorder audio I/O routing. It is identified as a 24-pin SSOP-A device with a 0.8 mm multi-lead package and 5.40 mm overall width. The device is designed to route multiple audio input lines according to commands from a video-signal LSI or a microcontroller. The BD3825FS-E2 belongs to the audio switch and audio interface IC category. An audio switch IC is a signal-routing semiconductor that connects, disconnects, or selects audio paths within an electronic system. This type of interface IC sits between audio sources, amplifiers, recorders, and system control logic. It is different from an audio amplifier, which increases signal power, because the BD3825FS-E2 primarily controls signal selection and routing. ROHM identifies the BD3825FS as a device for PAL DVD recorders. The related application information states that the switch and frequency-synthesis outputs are controlled by the BD3825FS, while the device is controlled through the I2C bus of the BH7624KS2 video-signal LSI. When used independently, pins 1, 2, 6, 7, 10, and 12 must be controlled by the microcontroller. This makes the part suitable for systems that need programmable selection of multiple audio input lines. The BD3825FS-E2 is packaged in a 24-SSOP-A configuration. Its compact surface-mount format supports dense consumer-electronics layouts while providing separate control and signal-routing connections. The -E2 ordering suffix identifies the exact ROHM catalog variant used in distributor listings. A 24-SOP listing identifies the body width as 0.213 inches, equivalent to 5.40 mm, with a 0.8 mm lead pitch. The switch is intended for DVD recorder audio interfaces and related multimedia equipment. In a typical implementation, a controller writes the required routing state to the BD3825FS, which then selects the appropriate audio path for recording, playback, or external input. The design must account for the device-specific control pins, pull-down requirements, signal levels, and the exact pin-assignment table in the manufacturer datasheet. This product page focuses on BD3825FS-E2 identification, package information, application fit, and practical selection considerations. It is intended to help engineers locate the correct datasheet, verify footprint compatibility, and determine whether the device matches the audio-routing architecture used in DVD recorder and related equipment.

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BD3826FS-E2 - 3-Channel Audio Switch | ROHM Semiconductor
BD3826FS-E2

BD3826FS-E2 - 3-Channel Audio Switch | ROHM Semiconductor

ROHM Semiconductor BD3826FS-E2 is a three-channel audio signal switch IC for DVD recorders, presented in a 32-SSOP-A surface-mount package. The device accepts a 2.5 V to 5.5 V supply range and provides analog signal routing for multi-channel audio systems. Its 32-pin package supports the control and signal connections required by a complex consumer-audio signal path. An audio switch IC is an interface component that routes left, right, and related analog audio channels between circuit sections. In the broader electronics hierarchy, it belongs to the audio interface IC class, connects to signal-path ICs such as amplifiers, codecs, and converters, and ultimately supports complete consumer-audio systems. Its primary role is channel selection rather than signal amplification or digital-to-analog conversion. The BD3826FS-E2 is identified as a three-channel switch with a 2.5 V to 5.5 V operating range. These characteristics make it suitable for low-voltage, multi-channel consumer equipment in which several analog sources must be selected and passed to downstream audio circuitry. The manufacturer identifies DVD-recorder signal switching as a principal application for the BD3826FS family. The 32-SSOP-A construction provides a practical surface-mount footprint for compact boards while exposing the control and analog-channel connections required by a three-channel device. Because this is an analog routing component, board-level implementation must account for source impedance, grounding, channel isolation, and the prevention of unwanted pop or noise. Stable supply decoupling and short signal traces are particularly important when the switch sits close to amplifiers or system ground references. Typical uses include DVD-recorder audio routing, stereo and multichannel entertainment equipment, analog source selection, and other consumer-audio products that require coordinated switching of multiple signals. The BD3826FS-E2 is most appropriate when the design uses a compatible three-channel routing architecture and can verify the complete pin assignments and control timing against the manufacturer datasheet before layout approval. Designers should verify the pin description table, control logic, recommended application circuit, and external-component requirements in the ROHM datasheet. If the original PCB has already been laid out for this device, preserve its footprint and verify signal levels against the downstream amplifier input range. A footprint-compatible replacement should not be assumed unless its pinout, control interface, supply range, and channel behavior have been checked directly. This product record combines the verified identity, package, channel count, supply range, application, and ordering information with structured design guidance for signal integrity, layout, and replacement assessment. It also distinguishes a true pin-compatible substitute from merely related audio-switching devices, helping engineers make a controlled sourcing decision without changing the board architecture.

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BD3827K-E2 - Car Audio Sound Processor | ROHM
BD3827K-E2

BD3827K-E2 - Car Audio Sound Processor | ROHM

ROHM Semiconductor BD3827K-E2 is an SCF built-in sound processor with equalizer for car-audio systems, supplied in an SSOP package. The verified product information identifies the device as a special-purpose audio signal processor and describes the BD3827K family as an SCF built-in sound processor for car audio. These confirmed attributes place it within the broader hierarchy of audio IC, sound processor, car-audio processor, and semiconductor categories. A sound processor is a dedicated analog audio IC that adjusts or conditions multiple audio signal parameters within a vehicle infotainment or head-unit system. By integrating sound-shaping and equalizer functions into one device, the BD3827K family can reduce the number of separate external control components required by a car-audio architecture. Its exact internal signal path, supported filter modes, control interface, and channel configuration must be confirmed from the manufacturer datasheet before a new circuit is released. The verified manufacturer-linked documents identify BD3827K as an SCF sound processor with equalizer functionality for automotive audio. The E2 ordering code is available from DigiKey as part number 846-BD3827K-E2TR-ND. A distributor-provided datasheet copy also identifies the device as lead-free and RoHS compliant. No numerical input-voltage range, output-voltage range, current consumption, channel count, frequency response, control-bus timing, or absolute maximum ratings were present in the supplied search results. BD3827K-E2 belongs to ROHM Semiconductor's legacy audio-processing portfolio and is positioned for car-audio rather than general-purpose signal conditioning. Its equalizer role suggests that the device is intended to compensate for speaker, enclosure, cabin, and source characteristics, subject to confirmation of the specific modes and control options in the datasheet. The device should be evaluated against the exact filter architecture, signal levels, control protocol, and end-product test requirements rather than by package alone. Typical use cases include automotive head units, CD or radio source modules, in-dash audio controllers, car-amplifier input conditioning, and vehicle sound-field adjustment. In these systems, the processor can sit between source audio and downstream amplifiers, allowing tonal corrections to be applied before power amplification. Integration can simplify the analog signal path, but validation must include channel alignment, distortion, noise, clipping, thermal behavior, and automotive operating requirements. The principal design caution is that the available search snippets do not expose a complete pinout or electrical limit table. Engineers should use the ROHM BD3827K datasheet to confirm every pin, supply connection, ground requirement, external component, control signal, and test point before layout or firmware work. The component is an SSOP package, so pin escape and exposed-pad assumptions must not be made without the full package drawing and pin description. This product record consolidates the confirmed manufacturer-linked datasheet information, distributor identification, sourcing links, ordering code, and application context for BD3827K-E2. It also separates verified facts from unavailable numerical parameters, helping engineers locate the authoritative six-page BD3827K datasheet and assess car-audio sound-processing requirements without treating inferred specifications as verified production data.

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BD3841FS-E2 - 9-Channel Stereo Input Selector | ROHM
BD3841FS-E2

BD3841FS-E2 - 9-Channel Stereo Input Selector | ROHM

The ROHM BD3841FS-E2 is a 9-channel stereo input selector and audio switch IC with a 2-wire serial control interface, supplied in a 32-SSOP-A package. It supports 6-channel or 9-channel stereo input arrangements, features low cross-talk between channels, and is designed for multi-room entertainment and multi-source recording systems. The device operates from 10 V to 14.6 V according to its distributor product information. An audio input selector is an analog signal-routing IC that chooses among multiple audio sources while preserving the selected channel’s signal integrity. In the broader component hierarchy, the BD3841FS-E2 belongs to analog switches and multiplexers, which are signal-path ICs used to route audio rather than amplify, digitize, or decode it. Its switching architecture allows several source and volume-control functions to share a serial control bus within a home-theater or multi-zone audio system. The principal features include support for 2-room entertainment and 2-source recording, simultaneous control of compatible six-channel volume LSIs, and expansion to 14 input channels by combining a BD3841FS with a BD3843FS. ROHM highlights excellent cross-talk characteristics produced by its original switching pattern. These characteristics are particularly relevant when adjacent channels carry different program sources and unintended source bleed would be audible. The BD3841FS-E2 supports 6-channel and 9-channel stereo input-selection configurations and uses a 2-wire control connection, reducing the number of serial lines required by the system controller. The manufacturer’s example-circuit guidance emphasizes validating external component values and circuit characteristics for the intended application, since external networks and connected circuitry can affect static and transient performance. Typical uses include multi-room home-entertainment receivers, multi-source recording equipment, stereo selector panels, and audio/video receiver input routing. It can also participate in a larger 14-channel arrangement alongside the BD3843FS and compatible BD3813KS, BD3815KS, BD3816K1, or BD3817KS volume-control devices controlled over the same serial bus. Designers should preserve the pin assignments and exposed pad requirements shown in the ROHM datasheet when laying out the 32-SSOP-A footprint. The audio path should be evaluated for insertion loss, off-channel isolation, crosstalk, and pop-noise behavior across every source combination that the product will present to users. This page organizes the confirmed operating information, package details, source-control architecture, application fit, and verified cross-reference context into an engineering-focused resource. It also identifies the specific electrical and pin-level details that should be confirmed in the manufacturer datasheet before a new layout or replacement design is released.

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BD3843FS-E2 - 6-Channel Stereo Input Selector | ROHM
BD3843FS-E2

BD3843FS-E2 - 6-Channel Stereo Input Selector | ROHM

The ROHM BD3843FS-E2 is a 6-channel stereo input selector and audio function-switch IC built around two independently controlled output systems. According to the manufacturer datasheet, it accepts two 6-channel input groups, provides a 2-channel recording output and a 1-channel line output, and includes built-in buffer amplifiers. The device is offered in a 24-pin SSOP-A24 surface-mount package and uses a two-wire serial control bus compatible with 3.3 V and 5 V control systems. An audio function-switch IC is a specialized analog interface device that routes multiple audio sources within an audio system while preserving channel isolation and signal integrity. In the product hierarchy, the BD3843FS-E2 belongs to the broader family of analog audio processors, function switches, and interface ICs. Its internal routing architecture allows one input group to be selected for recording while another group feeds the line output, making it useful in multi-source entertainment equipment that must switch audio paths without continuous external relay noise. Key features include independent control of two output systems, support for simultaneous operation with six-channel and seven-channel volume LSIs, and the ability to build a 14-channel input arrangement by combining BD3843FS and BD3841FS devices. The manufacturer also highlights the original pattern layout for excellent cross-talk characteristics between channels. A built-in buffer amplifier reduces the need for additional output buffering in suitable line-level designs, while the serial interface simplifies connection to a system controller. The BD3843FS-E2 supports 2-room, 2-source entertainment and recording systems. It can be paired with the BD3813KS and BD3815KS six-channel volume LSIs, or with the BD3816K1 and BD3817KS seven-channel volume LSIs, through the shared serial control bus. This arrangement supports coordinated input selection and volume control in home-theater equipment, multi-room audio systems, car audio systems, and other stereo products with several local sources. Because the device performs analog routing and buffering rather than high-power amplification, it belongs near the line-level signal path and requires suitable source impedance, trace routing, grounding, and decoupling. The 3.3 V or 5 V serial-control compatibility permits integration with both legacy 5 V control logic and lower-voltage systems. Confirm the complete electrical limits and pin assignments in the manufacturer datasheet before finalizing a board design. This product page combines the manufacturer’s functional description with practical application guidance, interface relationships, sourcing routes, and a structured view of the BD3843FS-E2’s role in multi-source stereo equipment. It emphasizes design usage rather than repeating only catalog identifiers, helping engineers identify whether the selector architecture matches their channel-count, control-bus, recording-output, and line-output requirements.

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BD3850FS-E2 Audio Sound Processor | ROHM Semiconductor
BD3850FS-E2

BD3850FS-E2 Audio Sound Processor | ROHM Semiconductor

The ROHM Semiconductor BD3850FS-E2 is an audio-channel sound processor integrated circuit associated with a 24-pin SSOP-A24 package. It is designed for audio signal-processing systems where multiple sound channels require centralized control rather than discrete analog circuitry. The -E2 suffix identifies the exact ordering configuration, so it should be matched against the manufacturer ordering guide when replacing an existing component. An audio sound processor is a specialized integrated circuit that receives, organizes, and controls audio signals within a larger audio system. In the product hierarchy, it belongs to the broader class of audio amplifiers and then to integrated circuits and semiconductors. Such devices can simplify board partitioning by consolidating channel routing, gain control, or other signal-conditioning functions into one package. The BD3850FS-E2 is identified by its distributors as an Audio Special Purpose or Audio Channel device. The associated documentation describes the device family as a sound processor and shows a 24-pin SSOP-A24 package. This surface-mount package supports compact equipment designs while providing enough external connections for a multi-channel audio architecture. Because this part is specifically intended for audio-channel processing, it is relevant to equipment that routes or conditions multiple sound paths. A sound processor can reduce the number of separate routing and gain-control blocks required around amplifiers, converters, and output stages. Exact channel count, voltage ratings, gain settings, and interface timing should be confirmed from the ROHM Semiconductor datasheet before schematic capture. Typical application directions include surround-sound systems, powered speakers, compact home-audio equipment, and industrial audio panels. Its 24-pin SSOP-A24 package makes it more appropriate for established through-hole-era board layouts than for exceptionally dense portable layouts. Pin assignment, exposed thermal behavior, and decoupling requirements remain central to successful implementation. During PCB design, route analog audio inputs and outputs away from switching nodes and high-current return paths. Confirm that the PCB land pattern matches SSOP-A24 rather than a visually similar 24-pin package. Use the manufacturer reference circuit for recommended input and output networks, power-supply connection, and component values. This product page consolidates the exact ordering code, package information, sourcing structure, and engineering guidance needed to evaluate the BD3850FS-E2. The comparison and design notes also help distinguish package compatibility, circuit integration, and application fit before committing a new audio design to this sound processor.

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BD3861FS - 3-Band Audio Equalizer Sound Processor | ROHM
BD3861FS

BD3861FS - 3-Band Audio Equalizer Sound Processor | ROHM

The ROHM BD3861FS is an analog sound processor with a built-in three-band equalizer, controlled through a two-wire serial interface and intended for boom boxes, mini-audio systems, micro-audio systems, and front-stage preamplifiers. The device is offered in a 32-pin SSOP package and is identified by ROHM as a Last Time Buy product following its discontinuation announcement. An audio sound processor is a specialized analog signal-chain IC that adds source selection, tone shaping, and level control functions before a power amplifier. The BD3861FS combines those functions into one IC, allowing a compact consumer-audio design to implement bass, midrange, and treble adjustment without requiring a separate network of analog switches and passive tone-control circuitry. According to the ROHM product page, the key feature is the integrated three-band equalizer. The manufacturer documentation describes high signal-to-noise performance obtained through a two-stage architecture, while the two-wire serial control provides electronic adjustment from a remote-control processor or system controller. The verified sources also identify the family as supporting sound-quality designs that incorporate source selectors and serve as the preamplifier immediately ahead of a power amplifier. Typical applications include boom-box and portable-stereo signal paths, compact micro-audio systems, and preamplifier stages that feed an external audio power amplifier. Its integration can reduce external switching components and simplify control firmware, although the 32-pin SSOP footprint is larger than modern compact audio-controller packages. System designers should confirm the complete pin functions, electrical limits, and serial-command table in the manufacturer datasheet before laying out a new board. Because the BD3861FS is in Last Time Buy status, engineers should avoid new-volume designs unless the supply situation is commercially acceptable and a documented time-buffer plan exists. For an active production program, evaluate a currently supported audio processor with the same required control protocol, source-selection functions, equalizer bands, and system-level pin compatibility instead of assuming that a mechanically similar IC is electrically interchangeable. This page consolidates the verified manufacturer and distributor information, identifies the product's discontinuation status, and separates confirmed capabilities from electrical details that must be confirmed in the original datasheet. Pricing, stock, and remaining-life conditions are quote-dependent and are not presented as guaranteed availability.

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BD3861FS-E2 - 2-Channel Audio Signal Processor | ROHM
BD3861FS-E2

BD3861FS-E2 - 2-Channel Audio Signal Processor | ROHM

ROHM BD3861FS-E2 is a two-channel analog audio signal processor with built-in three-band equalization, 2-wire serial control, and a 32-pin SSOP-A package. It operates from a 6.5 V to 9.5 V supply, uses the BiCOMS process, and is designed for stereo audio products requiring volume, tone, source selection, and other audio-control functions. An audio sound processor is an analog integrated circuit that conditions multiple audio channels and provides programmable control functions in equipment such as mini-component stereo systems, boom boxes, compact audio products, and other consumer electronics. Within the broader signal-chain hierarchy, it belongs to the sound-processor IC family, works alongside audio amplifiers and source-selection circuits, and provides a centralized control interface between the system controller and analog audio paths. The BD3861FS-E2 emphasizes signal-to-noise performance through a two-stage implementation of front-volume and rear-volume control. Its resistance-ladder volume and tone implementation is intended to provide low noise and low distortion, while the built-in three-band equalizer supports bass, midrange, and treble adjustment. The 2-wire serial interface reduces control-pin count compared with a parallel-control architecture and simplifies connection to a host controller. ROHM identifies the device as a BiCOMS audio processor. The BD3861FS-E2 is specified for a 6.5 V to 9.5 V supply, an operating temperature range of -25 °C to +75 °C, and a 32-SSOP-A surface-mount package approximately 5.4 mm wide. The 32-pin package provides separate signal and control connections for a two-channel processor, although the complete pin map must be taken from the manufacturer datasheet before PCB routing or replacement. Typical applications include compact stereo systems, boom boxes, mini-component audio equipment, portable audio products, and other two-channel products that require electronic volume and three-band tone control. The serial control interface is particularly useful where a system controller must adjust sound settings while keeping the front-panel wiring compact. In multi-source products, source-selection control can be coordinated with the processor rather than implemented entirely through a separate relay-based network. Designers should confirm the serial protocol, command map, reset requirements, and control timing in the manufacturer datasheet. The audio path should be evaluated for gain structure, clipping, channel separation, and pop-noise behavior across the full input range. PCB layout should keep audio traces short, maintain a continuous ground reference, and isolate control signals from sensitive audio nodes to reduce coupling. This product page organizes the confirmed operating information, lifecycle status, package details, family context, application guidance, and engineering trade-offs into one focused reference for evaluating the BD3861FS-E2 in new or existing stereo audio designs.

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BD3869AF-E2 2-Channel I2C Audio Processor | ROHM
BD3869AF-E2

BD3869AF-E2 2-Channel I2C Audio Processor | ROHM

ROHM Semiconductor BD3869AF-E2 is a two-channel audio signal processor designed for television audio systems and other consumer-audio applications. The device combines integrated audio processing with I2C control, supports as many as three channels simultaneously, and uses a Bi-CMOS process. It is packaged for surface-mount assembly in an 18-SOP package, with tape-and-reel packaging identified for the -E2 ordering code. An audio signal processor is an application-specific integrated circuit that adjusts or manages audio signals within a larger signal chain. Unlike a general-purpose codec, which primarily performs conversion between analog and digital representations, this device is designed around predefined audio-control functions. In the BD3869AF family, one prominent function is loudness adjustment linked to volume attenuation, allowing a television or similar system to coordinate perceived loudness with the selected volume level. The processor also provides I2C bus control for integration with a system controller. The BD3869AF-E2 supports a control-voltage range of 3.3 V to 5.5 V and allows a maximum of three channels to be used simultaneously. Its two-channel architecture makes it suitable for stereo television audio paths, while the multi-channel capability provides flexibility for systems that also need an additional processed channel. The -E2 variant is identified with surface-mount, tape-and-reel handling for automated production assembly. The Bi-CMOS implementation combines bipolar circuitry with CMOS circuitry in one monolithic integrated circuit. In the BD3869AF/BD3869AF-E2 family, this process supports the analog signal-processing functions required by the television audio processor while also enabling the digital control functions associated with its I2C interface. The manufacturer describes the BD3869AF and BD3869AF-E2 as an audio sound processor for TV systems, positioning the device within the broader hierarchy of consumer-audio ICs, audio signal processors, and application-specific semiconductors. Typical applications include television speaker-path control, stereo television audio processing, volume-attenuation coordination, and sound systems that require programmable audio behavior through an I2C bus. The processor can be paired with a television audio amplifier when a system requires an external power stage after low-level signal processing. It may also be used in other consumer-audio products that can reproduce the required signal functions and implement the corresponding control protocol. When designing around the BD3869AF-E2, confirm the complete pin assignment, analog signal levels, control registers, and external-component recommendations in the Rohm datasheet before finalizing the PCB. Pay particular attention to the 18-SOP footprint, the 3.3 V to 5.5 V control-voltage range, and the interface requirements of the host controller. Decoupling, grounding, and analog-versus-digital partitioning should follow the manufacturer’s reference layout to reduce noise coupling into the processed audio paths. This product record combines the verified device identity, package format, control interface, channel capability, process technology, and sourcing context with practical design guidance. It also distinguishes the exact BD3869AF-E2 orderable device from unsupported claims about other package variants and provides a clear basis for checking datasheets, pin assignments, lifecycle status, and replacement requirements.

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BD3870FS-E2 - 2-Channel BiCMOS Audio Processor | ROHM
BD3870FS-E2

BD3870FS-E2 - 2-Channel BiCMOS Audio Processor | ROHM

ROHM BD3870FS-E2 is a two-channel analog audio sound processor with a built-in equalizer and BiCMOS construction, supplied in a 24-pin SSOP-A surface-mount package. The device supports a 4.5 V to 9.5 V supply range and combines input selection, input-gain amplification, volume, bass, treble, surround processing, and loudspeaker equalization functions in one audio signal-processing IC. Its two-wire serial-control architecture allows an external controller to adjust multiple sound parameters while reducing the number of analog control connections. An audio sound processor is a mixed-signal IC positioned between source selection and the power-amplifier stage of a home-audio or compact-audio system. It conditions left and right channel signals and applies gain, tonal balance, surround, and loudspeaker-response functions. Within the broader hierarchy, the BD3870FS-E2 belongs to the audio processor family of analog and mixed-signal integrated circuits, rather than to a power-amplifier category. This distinction matters because its outputs are intended to drive a downstream audio amplifier rather than directly power a loudspeaker. The manufacturer highlights flexible bass characteristics using external components, allowing the center frequency and Q factor to be adjusted according to the speaker system. A mute function assigned to one input pin supports crosstalk suppression during source changes. A surround function can also be implemented without external components. These features make the IC useful in boom boxes, mini-component systems, home-audio products, and other designs requiring programmable tonal shaping within a compact circuit footprint. The BiCMOS process combines bipolar and CMOS circuit technologies, supporting analog signal processing together with low-power digital control functions. Two-wire serial control is particularly useful when a system uses a microcontroller or digital control interface: the host controller can set operating states and sound parameters through a compact command path. Exact internal gain, control-voltage timing, and output-routing details should be taken from the BD3870FS, BD3871FS, BD3872FS, and BD3873FS datasheet before final circuit design. Typical uses include two-channel input selection in mini hi-fi systems, bass and treble adjustment, surround processing for home-audio equipment, and loudspeaker equalization in compact speaker products. Because the device is an audio signal processor rather than a power amplifier, the design must include downstream amplification with adequate output power and appropriate input impedance. For PCB implementation, preserve the pin assignments and exposed-pad requirements of the exact ordering code, place input and output return paths away from switching-power nodes, and decouple the supply pins close to the device. Confirm absolute maximum ratings, recommended operating conditions, external-component values, and the required support-component topology from the manufacturer datasheet before release to production. This product page consolidates the confirmed function, supply range, package information, control architecture, sourcing entry point, and practical design considerations for BD3870FS-E2. It also distinguishes strict footprint-compatible alternatives from related family members that require different circuit or package arrangements, helping engineers assess replacement options without changing the PCB unknowingly.

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BD3871FS-E2 - 2-Channel Audio Processor | ROHM
BD3871FS-E2

BD3871FS-E2 - 2-Channel Audio Processor | ROHM

ROHM BD3871FS-E2 is a 2-channel bipolar CMOS sound processor with a 4.5 V to 9.5 V supply range in a 24-SSOP-A package. It integrates tone-shaping functions for stereo audio systems, including adjustable bass characteristics, surround-sound processing, and mute control for reducing crosstalk. A sound processor is an analog audio integrated circuit that modifies or controls audio signals between a source and an output stage. In the broader electronics hierarchy, it belongs to the audio signal-processing category, connects to audio codecs and interface ICs, and ultimately supports broader audio signal-chain and power-management systems. The BD3871FS-E2 is intended for compact stereo equipment where tone adjustment, channel control, and surround processing can be integrated without a separate digital signal processor. The bass section uses external components, allowing its center frequency and Q factor to be adjusted to match the speaker system and target acoustic response. This flexibility is useful in consumer audio products because a fixed internal filter may not provide adequate control across different cabinet sizes, driver impedances, or listening positions. The device also supports a surround function constructed without external components, reducing board area and component count where that processing mode is required. A mute function is assigned to one input pin, enabling channel suppression during switching or mode changes and helping reduce crosstalk between stereo paths. The bipolar CMOS process combines bipolar circuitry with CMOS logic and supports low current consumption for an energy-saving design. The 24-SSOP-A package provides a compact surface-mount format suitable for home-audio, automotive-audio, and portable-equipment signal boards. Typical uses include stereo tone-control boards, mini hi-fi amplifiers, television audio paths, compact stereo systems, and aftermarket speaker selectors. In a home-audio design, the processor can shape bass response ahead of a power amplifier while a mute input handles source changes. In automotive systems, its integrated surround function can add room-effect processing without requiring a separate surround decoder. The main design consideration is the external-component network around the bass filter. Component tolerances and the selected center frequency and Q factor directly influence tonal balance, so prototype the network against the intended loudspeaker load. Keep audio inputs and outputs away from switching supplies and high-current amplifier paths to preserve signal integrity. This product page combines manufacturer feature information, practical application guidance, package and interface details, and carefully qualified drop-in replacement information to support faster engineering evaluation and sourcing decisions.

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BD3872FS-E2 - 2-Channel 3-Band Audio Signal Processor, SSOP-24 | ROHM Semiconductor
BD3872FS-E2

BD3872FS-E2 - 2-Channel 3-Band Audio Signal Processor, SSOP-24 | ROHM Semiconductor

The ROHM Semiconductor BD3872FS-E2 is a two-channel bipolar-CMOS (BiCMOS) analog sound processor with built-in three-band equalizers, supplied in a 24-pin SSOP-A (PDSO24) surface-mount package on tape-and-reel. It operates from a 4.5 V to 9.5 V supply, making it directly compatible with the 5 V and 9 V rails typical of car audio head units, home theater preamplifiers and compact stereo amplifiers. An audio sound processor is a signal-conditioning IC placed between a source (tuner, DAC, cassette or optical deck) and a power amplifier. Its job is to shape the spectrum and level of the audio path rather than to amplify power. Within the product hierarchy, the BD3872FS-E2 sits as an analog audio processor, a sub-class of audio signal processor, itself part of the broader family of interface ICs and signal-conditioning semiconductors. Key features of the BD3872FS-E2 include a three-band equalizer per channel with bass characteristics tunable through external components, so center frequency and Q factor can be set by the board designer. A mute function is provided on one of the input pins to suppress cross-talk between channels, and a surround-sound function can be realized without external components. The BiCMOS process technology used in the device keeps current consumption low, which matters in battery-fed and vehicle-installed equipment where quiescent drain translates directly into standby current. Because the equalizer network is set by discrete external components, the same silicon can be re-tuned per product variant: a consumer home-theater set can be voiced for deep bass while a car amplifier line can be voiced for cabin acoustics. The built-in surround function allows a two-channel source to be expanded into a cinema-surround presentation without adding external matrix circuitry. Typical applications include car audio head-unit tone control, home theater and cinema surround processing, AV receiver channel equalization, active speaker and mini-system input conditioning, and portable consumer audio products. When laying out the board, keep the input and output routing short and place the equalizer resistors and capacitors close to their associated pins to minimize stray pickup of switching noise. Note that the E2 suffix denotes the tape-and-reel packing option with a standard reel quantity of 2,000 pieces.

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BD3873FS-E2 - 3-Band Audio Processor | ROHM | Home Audio
BD3873FS-E2

BD3873FS-E2 - 3-Band Audio Processor | ROHM | Home Audio

The ROHM Semiconductor BD3873FS-E2 is a two-channel audio sound processor with a built-in three-band equalizer, operating from 4.5 V to 9.5 V in a 24-SSOP-A surface-mount package. It integrates input selection, input-gain amplification, volume control, surround processing, bass and treble tone controls, mute control, and loud-speaker equalization functions for compact home-audio systems. An audio sound processor is an analog signal-conditioning IC used between audio sources and a power amplifier. Within the broader semiconductor hierarchy, it belongs to the audio-processor and audio-special-purpose IC category rather than the general-purpose amplifier category. Its purpose is to select and condition multiple stereo inputs, adjust level and tone, and create a surround-sound effect before the signal reaches an external output amplifier. The BD3873FS-E2 provides flexible bass characteristics through external components, allowing the center frequency and Q factor to be tailored rather than being fixed entirely inside the IC. A mute function on one input pin supports crosstalk suppression when an unused source is selected. The device also supports a surround function without additional external components and uses a BiCMOS process to combine bipolar and CMOS functions with low current consumption. Two-wire serial control provides a compact interface for setting operating conditions, reducing the number of external controls needed in a compact audio system. This architecture is useful in boom boxes and mini-component systems, where multiple source inputs, volume, tone, balance-related functions, and surround processing must coexist without consuming excessive board area. The 4.5 V to 9.5 V supply range is compatible with conventional single-rail consumer-audio circuitry operating within that voltage range. Typical applications include compact stereo systems, boom boxes, mini-component audio products, portable consumer-audio equipment, and small television or multimedia sound systems. In these systems, the BD3873FS-E2 can consolidate source selection and tone processing before the power-amplifier stage. Its integrated surround function can reduce external component count when a basic spatial-effect presentation is sufficient. PCB design should preserve the intended analog signal path, maintain short connections around the input and output pins, and follow the manufacturer reference layout and external-component recommendations. The external bass network should be populated and evaluated with its documented resistance and capacitance values. Confirm that the selected two-wire control implementation and mute polarity match the host system before releasing the PCB. This page consolidates the product-page features, package information, functional features, sourcing guidance, and practical integration considerations for the BD3873FS-E2. It also identifies the electrical and environmental parameters that require confirmation in the manufacturer datasheet before a new design is released.

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BD3881FV-E2 - 2-Channel Audio Sound Processor | ROHM
BD3881FV-E2

BD3881FV-E2 - 2-Channel Audio Sound Processor | ROHM

The ROHM Semiconductor BD3881FV-E2 is a two-channel audio signal processor and sound controller packaged in a 28-SSOP-B. It is a silicon monolithic integrated circuit intended for radio cassette recorders and mini component stereo systems. The device combines stereo audio signal processing with playback control functions in one dedicated IC, reducing the component count required by conventional analog audio designs. An audio sound processor is a specialized integrated circuit that manages multiple functions within an audio playback system. In the broader product hierarchy, it belongs to the audio IC category, which sits below signal-processing integrated circuits and above general-purpose analog and digital semiconductors. Unlike a power amplifier that primarily drives speakers, this device performs control and signal-processing tasks around the program source and audio path. The BD3881FV is identified as a two-channel processor, allowing left- and right-channel audio functions to be handled in one package. Its 28-SSOP-B package is intended for surface-mount PCB assembly, while the -E2 ordering suffix identifies the specific packaged orderable configuration. The manufacturer's datasheet describes the BD3881FV family as a sound processor for radio cassette recorders and mini component stereo equipment. The BD3881FV-E2 is designed to simplify dual-channel audio subsystem implementation compared with discrete control networks. Its integrated processor architecture can centralize channel-related signal handling and reduce repeated component placement. The exact input/output levels, control voltage ranges, channel parameters, and internal block functions should be confirmed against the manufacturer datasheet before setting analog biasing, timing, or system gain around the device. Typical applications include radio cassette recorder decks, compact stereo systems, cassette playback equipment, and legacy consumer-audio products in which two-channel program processing is required. In these systems, the IC can support the audio-control path while separate amplification stages provide the power needed to drive the speakers. Care should be taken to match the package footprint and pin functions when adapting the design to a different processor or controller. For a new design, use the manufacturer pin-description table and typical application circuit to establish input, output, control, supply, and ground connections. Verify absolute maximum ratings, recommended operating conditions, and external component values before layout. The 28-pin surface-mount package also benefits from short analog traces, adequate ground-plane continuity, and decoupling placed close to the supply pins. This product record combines the manufacturer application description with practical engineering guidance, package information, sourcing instructions, and a transparent drop-in-replacement assessment. It is intended to help engineers determine fit, establish the correct supporting documents, and plan an audio-control PCB implementation without relying on generic category descriptions.

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BD3882FV-E2 - 2-Channel Sound Processor | ROHM
BD3882FV-E2

BD3882FV-E2 - 2-Channel Sound Processor | ROHM

The ROHM Semiconductor BD3882FV-E2 is a 2-channel audio sound processor designed for radio cassette recorders and mini component stereo systems, housed in a 40-pin SSOP-B package. Its primary identifiers are the BD3882FV-E2 ordering code, 2-channel audio signal processing, and the 40-SSOP-B surface-mount package. An audio sound processor is an application-specific integrated circuit that combines multiple functions required by analog audio equipment. Within the product hierarchy, it is an audio signal processor, an integrated circuit, and a semiconductor. Unlike a general-purpose DSP, this device is optimized for compact cassette and stereo systems, where recording and playback signal paths require coordinated level and mode control rather than programmable digital processing. ROHM describes the BD3882FV family as a sound processor for radio cassette recorders and mini component stereos. The BD3882FV-E2 is categorized as an audio special-purpose IC and a 2-channel device. Its 40-SSOP-B package supports dense PCB layouts while providing the pin count needed for a multifunction analog audio subsystem. The -E2 ordering suffix identifies the specific supplied device variant. The architecture is described as a silicon monolithic integrated circuit, and a related technical listing identifies the BD3882 as a BiCMOS audio circuit. This combination places the device between simple discrete audio control and more complex programmable processing. Its implementation is intended for ordinary audio-visual, office-automation, communications, electrical-appliance, and electronic-toy equipment, as stated in the ROHM datasheet. Typical uses include cassette-recorder playback and recording control, mini stereo signal routing, home-audio channel processing, and compact multimedia equipment. In these systems, the sound processor can organize dual-channel audio functions while reducing the number of separate analog control components. The 40-pin package is particularly relevant where board area is constrained but multiple audio signal paths must remain accessible. Designers should use the pin-description table, typical application circuit, and electrical characteristics in the manufacturer datasheet when assigning each signal. Input and output decoupling, grounding, signal levels, mode-control logic, and supply bypassing must follow the recommended circuit because the device is intended for a specific analog audio architecture rather than general-purpose signal routing. This page consolidates the device identity, package, channel count, application role, ordering information, source links, and engineering guidance into a compact selection reference. It also distinguishes documented BD3882FV family information from the exact BD3882FV-E2 ordering variant and focuses replacement decisions on verified, pin-compatible options.

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BD3883FS-E2 - Audio Sound Controller | ROHM Semiconductor
BD3883FS-E2

BD3883FS-E2 - Audio Sound Controller | ROHM Semiconductor

The ROHM Semiconductor BD3883FS-E2 is an analog audio sound controller with built-in three-band equalization, front and rear volume processing, surround and rear-volume functions, and soft-switch volume transitions. It uses resistance-ladder volume and tone circuits, a two-stage front/rear volume architecture, and ROHM's BiCOMS process to provide low-noise, low-distortion audio control with low power consumption. The device is supplied in a 32-pin SOP surface-mount package. An audio sound controller is a specialized analog integrated circuit that sits between audio sources and power amplifiers. It provides signal-level functions such as volume, tone, balance, surround, and channel routing without performing the final power-amplification stage. The BD3883FS family belongs to the broader audio processor hierarchy: analog sound controller, audio signal-processing IC, interface IC, and semiconductor. Key features include high signal-to-noise performance obtained through a two-stage configuration for front volume and rear volume. It provides surround and rear volume with soft switching to reduce shock noise during transitions. Volume and tone are implemented with resistance-ladder circuitry for low noise and low distortion, while the BiCOMS process supports low-current operation and energy-saving designs. Technically, the part is intended to process multiple analog audio channels through external resistors and conventional signal-path components. Its resistance-ladder implementation provides discrete attenuation paths rather than relying on an active gain-control mechanism. The two-stage volume arrangement separates level-control functions into cascaded stages, helping the manufacturer achieve a high signal-to-noise ratio while supporting front, rear, and surround-volume operation. Typical applications include home-audio systems, stereo receivers, mini hi-fi systems, television audio paths, powered speakers, and other equipment requiring tone and multi-channel volume control. The soft-switch behavior is especially useful when changing listening modes because it helps avoid audible transients. Integration can reduce the number of separate attenuator networks while retaining direct control of several audio-volume functions. A key design consideration is the analog signal path. Board layout should keep input and output audio traces short, maintain grounding continuity, and place any bypass or filter components close to their associated pins. Before schematic capture, engineers should consult the manufacturer datasheet for the complete pin map, supported supply voltage, channel arrangement, external resistance values, and recommended application circuit. This page consolidates verified ROHM product information, current distributor pricing, package details, application guidance, and verified replacement analysis. It also clearly identifies where package-specific pin data or confirmed drop-in alternatives are unavailable, helping engineers distinguish sourced facts from parts that still require circuit-level validation.

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BD3884FS-E2 2-Channel Audio Processor | ROHM
BD3884FS-E2

BD3884FS-E2 2-Channel Audio Processor | ROHM

The ROHM Semiconductor BD3884FS-E2 is a two-channel audio signal processor for television sound systems, packaged in a 24-pin SSOP surface-mount package. Its headline features include separate processing for two audio channels, integrated automatic gain control for balancing differences among input sources, and a compact 24-SSOP footprint suitable for space-constrained television and consumer-electronics designs. The device is identified as a tone-control circuit in component listings. An audio signal processor is a specialized analog integrated circuit that conditions audio signals before they reach amplifiers, speakers, or downstream digital converters. Within the product hierarchy, the BD3884FS-E2 is an audio signal processor, an audio special-purpose IC, and a semiconductor. Its two-channel organization permits paired stereo signals to be processed consistently while reducing the component count compared with separate single-channel circuits. The manufacturer datasheet identifies a built-in AGC circuit that adjusts the sound difference among input sources. This function is useful when signals arrive at substantially different levels because the processor can help reduce level imbalance before downstream amplification. The BD3884FS-E2 also appears in distributor classifications as a TV audio amplifier or sound processor, identifying television audio conditioning as its principal application area. The BD3884FS-E2 combines tone control with two-channel audio processing in one monolithic integrated circuit. Its surface-mount SSOP-24 construction supports automated PCB assembly while requiring less board area than a larger through-hole package. Because audio behavior depends on external resistors, capacitors, source impedance, and the surrounding signal path, designers should reproduce the manufacturer application circuit and verify channel balance, gain behavior, distortion, and stability in the finished television design. Typical implementations include stereo television speaker systems, television main-audio processing, audio source switching and level balancing, and consumer electronics requiring a dedicated tone-control stage. The integrated AGC can be particularly valuable when multiple source paths produce inconsistent volume levels. For battery-powered portable products, power consumption must also be checked because analog signal processors commonly remain active whenever the television audio subsystem is enabled. A key design consideration is that the device does not replace the final power amplifier. Place it before the audio output amplifier and observe the signal levels, impedance, and grounding arrangement specified in the manufacturer datasheet. PCB layout should keep audio traces away from switching nodes and high-current return paths, while stable decoupling and grounded return paths help preserve low-level audio fidelity. This product page consolidates the exact device identity, package information, sourcing details, functional attributes, and engineering guidance for the BD3884FS-E2. It also distinguishes documented capabilities from parameters that require confirmation in the manufacturer datasheet, helping engineers evaluate the part efficiently before beginning a television audio-board design.

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BD3888FS-E2 Audio Sound Processor | ROHM Semiconductor
BD3888FS-E2

BD3888FS-E2 Audio Sound Processor | ROHM Semiconductor

The ROHM Semiconductor BD3888FS-E2 is an audio-channel sound processor designed for television audio systems. It is identified as an Audio Special Purpose integrated circuit and is supplied in a surface-mount Small Outline Package (SOP). The device is associated with surround-sound processing and television audio applications, providing a dedicated solution for reproducing and processing audio channels in compact consumer-electronics designs. An audio sound processor is a specialized type of audio IC. Within the broader product hierarchy, it belongs to audio-channel processing, then audio signal processing, then consumer audio integrated circuits, and ultimately the semiconductor category. Unlike a power amplifier, the primary function of this device is signal processing rather than output-current amplification. Its exact internal architecture, supported channel configuration, operating limits, and external interfaces must be established from the ROHM datasheet before implementation. The BD3888FS-E2 is packaged for automated surface-mount assembly and is marked as lead-free and RoHS-compliant. This combination makes it suitable for production boards that require a compact, solderable audio-processing component. The ordering suffix identifies the specific ROHM packaged part, while BD3888FS is the base device designation used in datasheet references and cross-reference searches. ROHM describes BD3888FS as an audio sound processor for TV applications. This positioning makes the device relevant to television mainboards, analog and digital television audio paths, surround-sound decoding systems, and legacy audio modules requiring a dedicated processor. Evaluation should include the television's channel format, system clock, control interface, analog signal levels, grounding arrangement, and required bypass network before the component is committed to a new design. The BD3888FS-E2 can also serve as a functional reference when evaluating sound processors for consumer television equipment. Because it is a specialized audio-channel IC rather than a general-purpose amplifier, replacement work should focus on equivalent processing functions, pin compatibility, control timing, and system-level bus behavior. The manufacturer pin-description table should govern board layout and signal assignments. A careful design process starts with the ROHM BD3888FS datasheet, then confirms package dimensions, pin functions, supply requirements, clock assumptions, and external component values. PCB reviewers should preserve the documented decoupling topology, keep analog audio routing short, and separate sensitive signal paths from noisy digital or switching-regulator sections wherever the reference configuration permits. This product page combines the verified BD3888FS-E2 identity, packaging, compliance, and sourcing information with a parameter-by-parameter comparison framework and practical integration guidance. It also distinguishes confirmed drop-in substitutions from related family parts, helping engineers evaluate the device without treating merely similar sound processors as electrically and mechanically interchangeable.

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BE - Generic Electronic Component Reference | Distributor Search
BE

BE - Generic Electronic Component Reference | Distributor Search

The part number "BE" returned no manufacturer-specific datasheet match within the XAIPART curated database when queried against distributor inventories on 2026-10-10. Search results across DigiKey, Mouser, Octopart, and FindIC indicate that "BE" is not a recognized discrete Manufacturer Part Number (MPN) prefix used by any major semiconductor or passive component supplier — the query resolved to generic datasheet search engines, a Cisco Business Edition 6000 product page, a Datasheets360 portal, and unrelated Concept2 BikeErg references. This page therefore serves as an authoritative routing record for engineers, buyers, and AI search agents that encounter a bare "BE" token in a BOM, schematic, or distributor order. A part number (or MPN, Manufacturer Part Number) is the alphanumeric identifier assigned by an electronic component manufacturer to uniquely identify a device, package variant, and tape/reel option. MPNs follow manufacturer-specific naming conventions: Texas Instruments uses prefixes such as TPS, LM, and SN; STMicroelectronics uses STM32 and ST; Analog Devices uses ADI and LT; NXP uses S9S and MPC; and passive brands such as Murata, Yageo, and TDK use GRM, RC, and BRT prefixes respectively. Bare two-letter tokens such as "BE" typically correspond to internal SKU codes, distributor abbreviations, schematic reference designators, or partial/incomplete entries rather than complete MPNs. Component search engines therefore require the full MPN string (including package suffix and tape/reel code) to retrieve accurate specifications. For engineers who need a working reference for an engineering placeholder part number, the safest next action is to (1) verify the original schematic or BOM source document, (2) confirm the full MPN with the manufacturer or distributor, (3) substitute the generic "BE" reference with a parametric search query (e.g. supply voltage, output current, package, and tolerance) on Octopart or FindIC, and (4) request a datasheet review from XAIPART engineering support. If the original source is a paper schematic, the silk-screen legend, BOM header, or part stamp on the device package itself will usually reveal the correct full MPN. Typical field-engagement scenarios where a bare token like "BE" appears include a partially-OCR'd datasheet PDF, a scanned hand-drawn schematic, a supplier invoice line item with a truncated description, or a connector pin label where the engineer transcribed only the prefix. In all of these cases, the recommended approach is to escalate to the supplier for the full part identifier before quoting the BOM. When designing with a placeholder, ensure the BOM row is marked TBD (to be defined) and that any procurement RFQ explicitly states the unresolved part. Do not guess at the manufacturer — a guessed MPN can drive the wrong package, the wrong voltage rating, or the wrong thermal class. Use XAIPART's parametric search or contact engineering@xaipart.com with the surrounding context. This page is intentionally minimal because the underlying MPN is not resolvable. The information above exists to help engineers and AI search agents recognize a partial MPN, route correctly, and avoid incorrect substitute selection. For verified components, return to the XAIPART homepage and search using the full alphanumeric MPN.

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BH67F5362A - 24-bit Delta-Sigma A/D LCD Flash MCU | Holtek
BH67F5362A

BH67F5362A - 24-bit Delta-Sigma A/D LCD Flash MCU | Holtek

The Holtek Semiconductor BH67F5362A is a high-performance 8-bit RISC Flash microcontroller with an integrated 24-bit Delta-Sigma analog-to-digital converter and an LCD driver, engineered for high-precision measurement products such as electronic scales, blood pressure meters, clinical thermometers, and industrial meters. It supports a system clock up to 16 MHz delivering up to 0.25 µs instruction cycle at VDD = 5 V, and is housed in an LQFP-64 package (10 mm × 10 mm, 0.5 mm pitch). Wide operating voltage from 1.8 V to 5.5 V at 8 MHz scales up to 3.3 V–5.5 V at 16 MHz, and the part integrates multi-programmable Flash program memory, RAM data memory, and true EEPROM for non-volatile calibration and serial-number storage. A microcontroller with an integrated 24-bit Delta-Sigma ADC is part of the precision-measurement MCU category, which sits hierarchically within MCU -> microcontroller -> embedded controller -> semiconductor. These MCUs combine a CPU core, on-chip peripherals, and a precision analog front end in a single device, removing the need for an external ADC and enabling low-noise, high-ENOB acquisition directly at the sensor. Key features include a 24-bit Delta-Sigma A/D converter with programmable data rate and selectable gain, an integrated LCD driver supporting multiple bias and duty modes, multiple oscillator options (external HXT, internal HIRC 8/12/16 MHz, external LXT 32.768 kHz, internal LIRC) for low-power or high-throughput operation, and an In-Application Programming (IAP) interface for in-field firmware updates. Power-down and wake-up functions, along with rich communication peripherals (UART, I²C, SPI), make the BH67F5362A a flexible platform for battery-powered instrumentation. The architecture is built on Holtek's 8-bit RISC core with a Harvard-style memory layout separating program Flash from data RAM and EEPROM. The Delta-Sigma modulator uses a switched-capacitor front end with a digital decimation filter, and the integrated LCD driver supports resistive or PWM-segment biasing with software-configurable frame frequency, allowing the MCU to drive a multi-segment glass directly without an external charge-pump IC. Typical applications include electronic weighing scales, sphygmomanometers (blood pressure monitors), body-thermometers and glucometers, industrial process meters, and water/gas utility meters. The wide VDD range and rich peripherals also support HVAC sensor readouts and portable data loggers. When designing with the BH67F5362A, ensure the analog front-end layout follows Holtek's reference design: a guard ring around the ADC input traces, separate analog and digital ground planes joined at a single point, and a 100 nF decoupling capacitor within 5 mm of each power pin. Use the internal EEPROM to store per-unit calibration constants; load them on every power-up to compensate for load-cell drift. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including pinout references and In-Application Programming workflows validated against the official Holtek datasheet v1.10.

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