BD3452KS - 8-Channel 7.1ch Sound Processor | ROHM
MPN: BD3452KS ✓ ActiveBD3452KS Overview
A sound processor is an audio signal-processing IC that selects among multiple audio sources, applies channel gain and volume control, and distributes the resulting signals to multichannel output stages. Within the broader semiconductor hierarchy, the BD3452KS belongs to the audio processing IC and signal processor categories, where it bridges source selection, channel-level control, and home-theater audio system routing.
The principal documented features include a nine-channel input selector, eight-channel volume control, eight-channel gain amplification, and support for 7.1-channel audio processing. These functions are intended for AV receivers, home-theater systems, and mini-component systems. The consolidated implementation reduces the number of separate routing and volume-control blocks required in a multichannel receiver.
The BD3452KS uses a two-wire control interface according to the distributor product information. This interface is intended for integration with a system controller while leaving the device's signal-processing and channel-adjustment functions local to the audio subsystem. Its 13 V to 14.6 V operating range indicates that it is designed around a conventional internal receiver supply rather than a low-voltage portable system.
Typical application roles include AV receiver channel routing, home-theater input selection, and mini-component multichannel amplification control. In these systems, the processor can select the appropriate source and apply per-channel gain and volume before signals reach external power amplifiers or downstream audio circuitry. The eight-output-channel architecture is particularly relevant to surround-sound configurations.
For new designs, verify the complete pin configuration, control protocol, electrical limits, and signal-path behavior against the manufacturer datasheet before layout or firmware development. Because the available verified information identifies the package and core functions but does not provide a complete pin table or detailed timing data, those implementation details should not be inferred from generic sound-processor designs.
This page consolidates verified distributor information, the manufacturer-hosted datasheet, function-level application guidance, selection criteria, and explicitly identified data gaps. It is designed to provide practical procurement and engineering context without presenting unverified electrical values, replacement parts, or lifecycle assumptions as established facts.
Drop-in alternatives for BD3452KS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesBD3452KS Maximum Ratings & Electrical Characteristics
| Product Type | 7.1-channel sound processor |
| Manufacturer | ROHM Semiconductor |
| Output Channel Count | 8 channels |
| Input Selector Channel Count | 9 channels |
| Volume Control Channels | 8 channels |
| Gain Amplifier Channels | 8 channels |
| Surround Sound Configuration | 7.1 channels |
| Operating Supply Voltage | 13 V to 14.6 V |
| Control Interface | 2-wire |
| Package Type | 100-SQFP |
| Package Dimensions | 14 mm x 20 mm |
| Mounting Type | Surface mount |
| Signal Processor Category | Audio signal processor |
| Integrated Functions | Input selector, 8-channel volume, 8-channel gain amplifier |
| Primary Application | AV receivers, home-theater systems, mini-component systems |
BD3452KS 14 mm x 20 mm Pin Configuration Guide
Pin configuration for BD3452KS (14 mm x 20 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for BD3452KS.
Refer to the datasheet for full pin configuration.
Typical Applications
BD3452KS is suitable for 6 applications: AV Receiver Channel Routing, Home Theater 7.1-Channel Processing, Mini-Component Multichannel Audio, Surround-Sound Input Switching, Integrated Amplifier Control, Home Cinema Processor Integration.
AV Receiver Channel Routing
The BD3452KS fits AV receivers that require centralized source selection and independent channel-level control for a surround-sound output stage. Its verified architecture includes a nine-channel input selector, eight-channel volume control, and eight-channel gain amplification, which aligns directly with multichannel receiver signal routing. The processor operates from 13 V to 14.6 V and uses a two-wire control interface, allowing a system controller to configure channel routing without requiring a separate physical control line for every function. The integrated design can simplify receiver signal-path layout, although engineers should verify the complete pinout, control protocol, timing, and recommended external circuitry in the ROHM datasheet before finalizing the PCB or firmware.
Recommended
Home Theater 7.1-Channel Processing
The BD3452KS is suited to home-theater systems requiring eight processed output channels and a 7.1-channel signal organization. Its nine-channel input selector can provide centralized source routing, while eight-channel volume and gain functions support independent adjustment of the main, surround, and related outputs. ROHM specifically identifies home-theater systems as a target application for the integrated processor. Because the device uses a 13 V to 14.6 V operating range and a two-wire interface, it is most appropriate for conventionally powered AV equipment with an appropriate receiver supply and system controller. The available verified information does not specify channel bandwidth, distortion, signal levels, or control timing, so those characteristics require confirmation from the manufacturer datasheet.
Recommended
Mini-Component Multichannel Audio
The BD3452KS supports mini-component systems that need multiple source selections and per-channel output adjustment without separating the routing and volume functions into several separate devices. Its eight output channels, nine-channel input selector, and integrated gain amplification provide a consolidated implementation for multichannel signal management. The manufacturer datasheet identifies mini-component systems as a direct application. In such a design, the 13 V to 14.6 V operating range must be accommodated by the internal power architecture, and the two-wire control interface should be connected according to the verified device protocol. Engineers should also review the pin-level analog connections and bypass behavior in the datasheet before selecting external amplifiers or output-routing components.
Recommended
Surround-Sound Input Switching
BD3452KS is applicable to surround-sound systems in which several source channels must be selected before being distributed across eight processed outputs. Its nine-channel input selector provides the documented basis for centralized input routing, while eight-channel volume and gain functions provide downstream level control. This architecture can reduce the number of separate routing blocks in an AV receiver or integrated amplifier. The 100-SQFP package measuring 14 mm by 20 mm provides a surface-mount implementation, but designers still need to follow the manufacturer package drawing for land patterns, exposed-pad requirements, and assembly details. Verify input impedance, attenuation behavior, channel mapping, and control timing from the datasheet because those electrical details are not included in the supplied search excerpts.
Recommended
Integrated Amplifier Control
The BD3452KS can serve as the signal-control element in an integrated multichannel amplifier when the design requires source selection and independent output-level adjustment. Eight gain-amplifier channels and eight volume-control channels allow the processor to establish channel-specific levels ahead of external power-amplifier stages. Its two-wire interface is intended for connection to a system controller, while the 13 V to 14.6 V operating range suits a conventional internal supply architecture. Compared with distributing routing and attenuation among discrete blocks, integration can shorten the control path and reduce component count. The actual signal-to-noise ratio, channel gain range, and total harmonic distortion are not present in the verified data and should not be inferred; consult the ROHM datasheet before establishing the amplifier gain budget.
Recommended
Home Cinema Processor Integration
The BD3452KS is appropriate for home-cinema electronics that need to coordinate nine input positions with eight controllable output paths. Its 7.1-channel processor architecture, 8-channel volume and gain functions, and integrated input selection match the internal routing requirements of a receiver-style product. The two-wire control interface can be used by the product controller to configure operating modes, subject to the command and timing details in the datasheet. The processor's 13 V to 14.6 V supply requirement must be reconciled with the receiver's power tree and startup sequence. Before schematic release, engineers should verify analog signal levels, reference-voltage requirements, channel-to-pin assignments, and any required external components using the manufacturer document.
Recommended
Engineering reference data for BD3452KS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 100-SQFP (14 mm x 20 mm) |
| Brand | ROHM Semiconductor |
| Product Type | 7.1-channel sound processor |
| Output Channels | 8 channels |
| Input Selector | 9 channels |
| Volume Control | 8 channels |
| Gain Amplification | 8 channels |
| Operating Supply Voltage | 13 V to 14.6 V |
| Control Interface | 2-wire |
| Primary Applications | AV receivers, home-theater systems, mini-component systems |
Key Differentiators
- Integrated 7.1-channel processing architecture (vs Generic discrete routing and volume implementation)
- Receiver-oriented channel configuration (vs Stereo-only audio selector)
- Two-wire system-control interface (vs Processor requiring multiple discrete control lines)
- Purpose-built multichannel package (vs Separate routing and volume ICs)
Design Notes
Use the ROHM package drawing for the 100-SQFP 14 mm by 20 mm land pattern, including pin pitch, exposed-pad dimensions, solder-mask clearance, and thermal-via requirements. The verified excerpts identify the package but do not provide its complete mechanical drawing. Do not infer footprint geometry from another ROHM 100-pin QFP; verify every package boundary and exposed-pad detail against the manufacturer datasheet before releasing artwork.
Plan the BD3452KS around its documented 13 V to 14.6 V operating range. Verify the recommended operating region, absolute maximum ratings, startup behavior, and decoupling requirements from the ROHM datasheet before defining the receiver power tree. The available verified excerpts do not provide current consumption, quiescent current, or power-sequencing requirements, so those values must not be guessed during power budgeting.
Keep analog audio routing and control traces consistent with the manufacturer's recommended layout. Separate the two-wire control path from sensitive audio paths where practical, use a continuous ground reference, and place required bypass components close to their associated pins. Exact grounding, isolation, and impedance guidance must be taken from the manufacturer document because those details are not included in the supplied distributor excerpts.
Do not treat a generic 8-channel volume IC as a drop-in substitute. Compatibility requires the same 100-SQFP footprint, matching pin functions, equivalent input selection, compatible gain and volume behavior, a compatible two-wire protocol, and operation within 13 V to 14.6 V. The supplied cross-reference search did not substantiate any specific replacement, so an engineering review is required before using another part on an existing board.
Compliance Information
The supplied verified search results include a Globalspec page displaying a RoHS verification request, but no conclusive compliance declaration is available. Compliance fields are therefore left unknown.
