ADC/DAC
Produkte (2518)
ADC081S051CISD - 8-Bit 500kSPS SAR ADC | Texas Instruments
The Texas Instruments ADC081S051CISD is a low-power, single-channel CMOS 8-bit analog-to-digital converter with a high-speed serial interface, offered in a 6-pin WSON (2.2x2.5 mm) package. It delivers sampling rates of 200 to 500 ksps across a single-ended input channel, with a successive-approximation register (SAR) architecture and SPI/QSPI/MICROWIRE/DSP-compatible serial output. Operating from a single +2.7V to +5.25V supply, it consumes only 1.6 mW at 3.6V and 8.5 mW at 5.25V, drawing just 1.5 mA typical supply current at full speed. A successive-approximation register ADC is a type of data converter that resolves each conversion one bit at a time using a binary-search algorithm against an internal DAC, achieving low latency, deterministic behavior, and inherent anti-aliasing. SAR ADCs sit within the data converter family (ADC > Data Converter > mixed-signal IC > semiconductor) and are favored over delta-sigma converters where designers need a one-conversion latency, no pipeline delay, and direct DC accuracy. The ADC081S051 brings that architecture into a sub-1 mW power class, suitable for battery-powered sensing nodes. Key features of the ADC081S051 include an INL/DNL of ±0.1 LSB (max), a SINAD of 49.7 dB, an SNR of 49.7 dB, and a 2.3 MHz full-power input bandwidth. The device provides an external reference range of 1.0V to VA (with VA itself supporting 2.7V to 5.25V), and integrates an input track-and-hold. The 6-pin WSON package exposes VA, GND, REF, AIN, SCLK, DOUT/DRDY, and CS pins, enabling compact PCB footprints around 2.2 mm x 2.5 mm. The ADC081S051 shares a fully pin-compatible family footprint with the 10-bit ADC101S051 and 12-bit ADC121S051, as well as the slower ADC081S021 (50-200 ksps) and faster ADC081S101 (500 ksps-1 Msps). This lets engineers scale resolution or speed without PCB rework. The serial interface uses straight-binary output data and a chip-select line that synchronizes multiple devices to a shared SPI bus. Typical applications include portable instrumentation, industrial process controls, optical sensors, consumer audio level meters, and battery monitoring. The wide supply range and micropower dissipation also suit remote IoT sensor readouts where standby current dominates. In automotive and industrial environments, designers often run the part from a 5V rail directly, simplifying the analog supply chain. When designing with this ADC, choose an external reference voltage source with low noise and adequate drive strength; the reference input impedance is dynamically switched during conversion, so a low-impedance buffer such as the REF5040 or a 10uF local decoupling is recommended. Route AIN with short, guarded traces away from switching digital lines to preserve INL performance.
ADC081S051CISDX - 8-Bit 500kSPS 1-Ch SAR ADC SPI | Texas Instruments
The Texas Instruments ADC081S051CISDX is a low-power, single-channel 8-bit CMOS analog-to-digital converter (ADC) supporting a sample rate range of 200 kSPS to 500 kSPS, housed in a 6-pin LLP/WSON package (2.2x2.5 mm). The part operates from a 2.7V to 5.25V single supply and features an SPI/QSPI/MICROWIRE-compatible serial interface with an external reference input. An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter architecture that uses a binary search algorithm to convert an analog input voltage into a digital code over a fixed number of clock cycles. SAR ADCs are prized for low latency, deterministic behavior, and excellent DC accuracy, and they sit within the broader hierarchy of: ADC -> data converter -> mixed-signal IC -> semiconductor. Compared with delta-sigma ADCs of similar speed, SAR converters deliver lower latency and require no output settling filter. Key features include ±1 LSB (max) INL/DNL, a single-ended analog input, an external VREF pin allowing any reference voltage up to VDD, and a wide analog input range of 0V to VREF. The serial ADC output stream is compatible with SPI, QSPI, and MICROWIRE hosts, eliminating the need for glue logic. The device consumes only 6.4 mW at 3V supply and 500 kSPS, making it suitable for power-constrained designs. The converter uses a charge-redistribution DAC array with a sample-and-hold front-end. Internal clock generation eliminates the need for an external high-frequency clock source. Per the ADC081S051 datasheet (Rev. F), the part is fully specified over the 200-500 kSPS range (not just a single point), providing guaranteed AC and DC performance across the operating envelope. The CMOS process enables low power consumption while maintaining 8-bit linearity across the industrial temperature range. Typical applications include portable battery-powered systems, isolated data acquisition modules, instrumentation and process control, position sensors and bridge transducers, and consumer white goods. The wide 2.7V-5.25V supply range and the small 6-pin LLP footprint make it particularly well-suited for space-constrained, low-power designs that need a single-ended input channel. A primary design consideration is reference stability: ADC accuracy is bounded by the reference voltage noise and drift, so choose a low-noise reference (e.g., a 2.5V or 3.3V reference IC). Also note that input current transients occur during acquisition - add a small RC input filter to settle the input within the acquisition window. This page synthesizes verified distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, providing a faster procurement and BOM-decision workflow for engineers.
ADC081S051CISDX/NOPB - 8-Bit 500kSPS SAR ADC, SPI, 6-WSON | TI
The Texas Instruments ADC081S051CISDX/NOPB is a low-power, single-channel CMOS 8-bit analog-to-digital converter with a high-speed SPI-compatible serial interface, housed in a 6-pin WSON (NGF) package with exposed thermal pad. It delivers sampling rates of 200 ksps to 500 ksps, draws only 1.6 mW at 3.6 V supply, and operates from a single +2.7 V to +5.25 V rail, suiting both 3.3 V and 5 V microcontroller or DSP systems. A Successive Approximation Register (SAR) ADC is a type of data acquisition converter which converts input voltage samples using a binary-search architecture that does not require an integrating or tracking cycle, providing deterministic latency and a single conversion clock. SAR ADCs sit at the lowest level of the data converter hierarchy (SAR ADC -> ADC -> data converter -> signal chain IC -> semiconductor) and are the workhorse of embedded sensing, instrumentation, and control loops where low latency, moderate resolution, and small package size matter more than highest absolute resolution. Key features include a straight-binary output data format compatible with SPI, QSPI, MICROWIRE, and most common DSP serial interfaces, an external SCLK-driven conversion clock, and an internal track-and-hold that eliminates the need for an external sample capacitor. The device typically dissipates 1.6 mW at 3.6 V V_A and 8.5 mW at 5.25 V V_A, with a power-down mode that drops supply current to microamp levels between conversions. The 6-WSON exposed pad gives a low thermal resistance path that supports full -40C to +85C industrial operation. Internally the ADC uses a charge-redistribution DAC array and a comparator driven by an on-chip successive-approximation state machine; the same die is shared across the entire ADC081S051 family. The single-ended analog input is sampled on the rising edge of CS, with the conversion clock derived from SCLK, so timing can be tuned at the host controller without external components. Typical applications include portable instrumentation, optical-module monitoring, system health and battery monitoring, sensor-signal digitization for industrial control loops, and consumer-electronics front ends where a small-footprint 8-bit ADC with a standard SPI port is needed. Pair the part with a low-noise reference and a small RC antialiasing filter at AINP for best AC performance. When designing, note that power dissipation is dominated by V_A and sample rate; derate SCLK and f_S together so f_S never exceeds 500 ksps. Tie unused AINP to mid-supply or ground through a defined DC path so the track-and-hold never floats at an undefined bias between conversions.
ADC081S101CIMF - 8-Bit 1Msps SAR ADC, SOT-23-6 | Texas Instruments
The Texas Instruments ADC081S101CIMF is a low-power, single-channel 8-bit CMOS analog-to-digital converter with a high-speed serial interface, fully specified over a 500 ksps to 1 Msps sampling rate range, housed in a 6-pin SOT-23 package. It operates from a single +2.7 V to +5.25 V supply, draws a typical supply current that scales with throughput, and includes an internal track-and-hold circuit for clean single-shot conversions. The serial output is SPI/QSPI/MICROWIRE/DSP-compatible, making the part easy to drop onto virtually any microcontroller or DSP without glue logic. An SAR (Successive-Approximation Register) ADC is a type of analog-to-digital converter that converts an input voltage to a digital code by binary-searching against a precision DAC. Compared with sigma-delta and pipeline ADCs, SAR ADCs deliver deterministic latency (one conversion per start-of-conversion pulse), low power consumption, and excellent DC linearity, while saturating around 1-10 Msps in modern CMOS processes. SAR is the dominant topology for low-power, sample-on-demand applications such as sensor readouts, motor control feedback loops, and instrumentation front-ends. Key features of the ADC081S101 include 8-bit resolution with no missing codes, an analog input range of 0 V to VDD, a hardware power-down pin that drops quiescent current to a few microamps between bursts, and an industry-standard 6-pin SOT-23 footprint that lets designers shrink the analog front-end to a few square millimeters of board area. According to the TI datasheet, the ADC081S101 shares its pinout and serial protocol with the 10-bit ADC101S101 and 12-bit ADC121S101, allowing seamless scaling of resolution without changing firmware or layout. Typical applications include industrial process control loops, portable battery-powered instrumentation, optical module monitoring, white-goods sensor readouts, and consumer-electronics front-ends. Designers choose this family when they need deterministic SAR latency, sub-3 mW typical operating power, and an ultra-small footprint that fits beside a sensor or inside a sealed housing. When designing with the ADC081S101CIMF, place the bypass capacitor within a few millimeters of the VDD pin and route the analog input over a quiet ground-referenced trace to avoid digital switching noise coupling into the sample window. The SOT-23-6 package is small but tracks well on standard reflow profiles. Industrial temperature grade (-40C to +85C) makes the part suitable for outdoor and automotive cabin applications, though not AEC-Q100 qualified. This page synthesizes distributor pricing, drop-in alternatives drawn from the same TI pin-compatible family, and practical design guidance that complements the manufacturer datasheet.
ADC081S101CISD - 8-Bit 1MSPS ADC, 6-WSON | Texas Instruments
The Texas Instruments ADC081S101CISD is a low-power, single-channel CMOS 8-bit analog-to-digital converter with a high-speed serial interface, offered in a 6-pin WSON (2.2 x 2.5 mm) package. It supports a sample rate range of 500 ksps to 1 Msps and operates from a single supply of +2.7 V to +5.25 V, with normal power consumption of 2.0 mW at 3 V and 10.0 mW at 5 V. An ADC (analog-to-digital converter) is a data-acquisition component that converts continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation register (SAR) ADCs such as the ADC081S101 are valued for their deterministic latency, low power draw, and small footprint, occupying the mid-tier of the converter hierarchy (SAR -> ADC -> data converter -> signal chain IC -> semiconductor). Key features include an internal track-and-hold circuit, straight-binary serial output compatible with SPI, QSPI, MICROWIRE and many common DSP serial interfaces, and an extended industrial temperature range of -40 C to +85 C. The 6-WSON package footprint is one of the smallest available for this speed class. The ADC081S101 is based on a SAR architecture with an internal track-and-hold, which samples the input on the rising edge of CS and completes it deterministically within the conversion cycle. The wide supply range lets the same part interface with both 3.3 V and 5 V microcontrollers without level shifters. Typical applications include portable instrumentation, motor control feedback loops, sensor signal conditioning, optical-module monitoring, and consumer audio level metering. The SOT-23-class footprint also makes it suitable for space-constrained PCB designs. When designing with this device, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and keep the analog input traces short and guarded. The device is now listed as obsolete on major distributors, so designers should consider active alternatives such as the ADC081S021 or ADC081S051. This page synthesizes distributor stock status, drop-in alternatives in the same 6-WSON footprint, and design considerations not aggregated in any one distributor listing.
ADC0820BCV - 8-Bit 666kSPS Half-Flash ADC w/ T/H | Texas Instruments
The Texas Instruments ADC0820BCV is an 8-bit high-speed microprocessor-compatible analog-to-digital converter with on-chip track-and-hold, packaged in a 20-pin PLCC (J-lead, 9x9 mm) and based on a half-flash conversion architecture. It delivers a maximum conversion time of 1.5 µs (about 666 kSPS), 0V to 5V analog input range on a single 5V supply, and ratiometric operation with any reference up to VCC. Maximum power dissipation is 75 mW, and the device supports cascading through an overflow output for higher-resolution systems. A half-flash (or sub-ranging) ADC is an architecture that splits a full flash converter into two lower-resolution flash blocks (typically 4-bit MSB plus 4-bit LSB) and combines them sequentially to halve the comparator count versus a true flash, while still achieving sub-microsecond conversion times. The ADC0820BCV uses 31 comparators, a 4-bit MSB flash, and a 4-bit LSB flash with internal DAC and track-and-hold. It belongs to the converter -> ADC -> successive-approximation/half-flash ADC -> data-acquisition IC hierarchy. Key features include latched three-state outputs that map directly to a microprocessor data bus, no external zero/full-scale adjustment, an overflow bit (OF) for cascading, and an operating temperature range of 0°C to +70°C (commercial grade). The PLCC-20 footprint supports 0.3" standard-width 20-pin DIP-style PCB layouts via J-lead castellated edges. Typical applications include digital voltmeters, portable instrumentation, process-control front ends, disk-drive read channels, and embedded microprocessor data-acquisition boards where parallel bus speed and simple interface logic are critical. When designing with the ADC0820BCV, treat the analog input as a switched-capacitor node and place a low-impedance buffer ahead of VIN to avoid dynamic errors. Use a clean 5V analog supply with local decoupling (0.1 µF ceramic in parallel with 10 µF tantalum) and route digital ground returns separately from analog grounds to keep digital switching noise out of the converter's reference ladder. This page consolidates pricing tiers, drop-in alternatives, and application-level design notes that go beyond the manufacturer datasheet's parametric tables.
ADC0820BCWM/NOPB - 8-Bit 667kSPS Half-Flash ADC | TI
The Texas Instruments ADC0820BCWM/NOPB is an 8-bit high-speed micro-processor-compatible analog-to-digital converter with an on-chip track-and-hold function, packaged in a 20-pin wide-body SOIC (WM, 7.50 mm). It uses a half-flash (two-step flash) conversion technique to deliver a 1.5 microsecond conversion time while dissipating only 75 mW of power, and supports a maximum sampling rate of 667 ksamples per second. What is a half-flash ADC? A half-flash ADC, also called a two-step or subranging flash converter, is a type of analog-to-digital converter that performs an initial coarse flash conversion followed by a fine flash conversion on the residue. This architecture reduces the number of comparators required compared with a true flash ADC, lowering die area and power consumption while keeping conversion speed close to flash-class performance. The ADC0820 family belongs to the wider hierarchy of Nyquist-rate ADCs -> half-flash ADCs -> successive-approximation-class converters -> data-acquisition analog ICs -> signal-chain semiconductors, and typically finds use wherever an 8-bit micro-processor-compatible ADC is needed. Key features include a single +5V supply operation with a 4.5V to 8V Vcc range, single-ended analog input with track-and-hold, and parallel microprocessor-compatible output data. The converter provides ratiometric conversion, accepts an external reference or supply-referenced operation, and supports both read-during-conversion and read-after-conversion timing modes for flexible processor interfacing. The wide SOIC-20 package simplifies prototyping and wave-solder PCB assembly. The device uses a built-in track-and-hold amplifier that minimizes aperture uncertainty and enables accurate conversions on fast-moving input signals. Operating modes are selected via the MODE pin, allowing single-ended or differential-style conversion control without external sample/hold circuitry. Typical applications include process control data acquisition, digital signal processing front-ends, portable instrumentation, video-digitizer auxiliary ADCs, and PC-based measurement boards that require an 8-bit, micro-processor-friendly ADC with a parallel bus interface. Industrial, scientific, and medical instrumentation that needs 0-70C commercial-grade operation also benefits from this part. When designing with this converter, ensure the analog input source impedance is low enough to settle within the track time, and place a 0.1 microF decoupling capacitor directly on the Vcc pin. For best linearity, drive the analog input from a low-impedance buffer, and avoid switching large digital currents near the analog ground return. This page synthesizes distributor pricing, verified drop-in alternatives, application-grade companion parts, and practical design notes not found in the bare manufacturer datasheet, helping engineers evaluate the ADC0820BCWM/NOPB for both new design and legacy support scenarios.
ADC0820BCWMX - 8-Bit 1.5µs Half-Flash ADC w/ T/H | Texas Instruments
The Texas Instruments ADC0820BCWMX is an 8-bit high-speed microprocessor-compatible analog-to-digital converter with on-chip track-and-hold, sampling at up to 667 kSPS (RD mode) and using a half-flash (two-flash) conversion architecture to deliver 1.5 µs typical conversion time. The device is supplied in a 20-pin SOIC (DW) wide-body package, operates from a single +5 V supply (VCC), and offers both microprocessor-compatible parallel interface modes (RD mode for tying directly to a 8080-style bus, and WR-RDM modes for standalone conversion). Input range is 0 V to +5 V when VREF(+) = +5 V and VREF(−) = GND. A half-flash ADC is a parallel type of analog-to-digital converter that uses two 4-bit flash sub-converter stages rather than a full 256-latch comparator array, dramatically reducing die area, power consumption, and cost versus a true flash converter while still achieving sub-microsecond per-code sampling. Within the broader data-converter hierarchy, the ADC0820 sits at the low-resolution high-speed node: it is a successive-approximation-class part on the throughput axis (faster than most SAR), yet simpler and cheaper than a true flash ADC. It belongs to the power-management-and-conversion family of mixed-signal data-acquisition ICs. The half-flash architecture performs a coarse 4-bit MSB conversion, then a fine 4-bit LSB conversion around the residue, producing a complete 8-bit code in two clock edges. Key features include 0 V to +5 V analog input range, on-chip track/hold eliminating the need for an external sample capacitor, ratiometric reference inputs for ratiometric transducers, and TTL-compatible digital outputs. Power dissipation is approximately 75 mW typical, and the device is specified for 0°C to +70°C (commercial) or −40°C to +85°C (industrial) operation depending on grade. Typical applications include digital-panel meters, process control front ends, microcontroller analog input expansion, video digitizing at low bandwidth, instrumentation, and portable data loggers where high sample rate and low cost matter more than 12-bit precision. The wide SOIC-20 footprint also eases hand-prototyping and breadboard integration compared with smaller DFN/QFN alternatives. When using this device, ensure the analog input driving bandwidth exceeds the ADC's input bandwidth, place a 0.1 µF decoupling capacitor directly at VCC, and route the analog/digital grounds with a star-ground or split-plane layout to avoid digital-noise coupling into the comparator ladder.
ADC0820CC/D - 8-Bit 1.5us Half-Flash ADC Die | Maxim Integrated
The Maxim Integrated ADC0820CC/D is a CMOS 8-bit analog-to-digital converter using a half-flash conversion technique to deliver a 1.5 microsecond conversion time at 75 mW maximum power dissipation, supplied in bare die form. The half-flash architecture uses 31 comparators split between a most-significant 4-bit ADC and a least-significant 4-bit ADC, providing high-speed conversion without the cost of a full flash design. An ADC (analog-to-digital converter) is a data-acquisition component that converts continuous analog voltage signals into discrete digital codes, serving as the bridge between the analog physical world and digital signal processors, microcontrollers, or FPGAs. The half-flash (or sub-ranging) topology is a speed/cost compromise between successive-approximation (SAR) ADCs and full-flash ADCs, achieving sub-2-microsecond conversion at modest die area and low power. ADC ICs are categorized within the broader signal-chain hierarchy: sensor -> analog front end -> ADC -> DSP/MCU -> actuator/logic. Key features of the ADC0820CC/D include an on-chip sample-and-hold (track/hold) front-end that eliminates the need for an external THA in many applications, single +5V supply operation, and a commercial temperature grade of 0C to +70C. The device supports both ratiometric and absolute-voltage conversions, with a typical input range of 0V to +5V when paired with a +5V reference. Its built-in track/hold function allows accurate digitization of fast-changing signals up to the converter's full-scale bandwidth. From a technical-depth perspective, the half-flash architecture first performs a coarse 4-bit conversion, then subtracts the DAC residue and runs a fine 4-bit conversion on the remainder; the two 4-bit results are combined and error-corrected to yield the final 8-bit code. This dual-step method gives the ADC0820 a typical aperture time of 100 ns and a maximum conversion time of approximately 1.5 us, while limiting comparator count to 31 - far fewer than the 255 comparators required by a true single-step flash converter. Typical applications include digital instrumentation, video digitizing, ultrasonic signal processing, high-speed data logging, and process-control front ends. The track/hold input also makes it suitable for multiplexing multiple channels into a single ADC at high switching rates without losing accuracy due to aperture jitter. When designing with this part, treat the bare die as an ESD-sensitive component and use matched-impedance bond-wire layouts to preserve the 1.5 us timing budget. Decoupling the +5V supply with a 0.1 uF ceramic capacitor placed within 5 mm of each bond pad is recommended to keep digital ground bounce out of the analog sample-and-hold path. This page combines Maxim Integrated datasheet values with distributor pricing and drop-in same-family alternatives to give design engineers a one-stop reference not found in any single source.
ADC0820CCN/PB - 8-Bit 667kSPS Flash ADC w/ Track-Hold | TI
The Texas Instruments ADC0820CCN/PB is an 8-bit, high-speed, microprocessor-compatible analog-to-digital converter (ADC) with an integrated track-and-hold function, packaged in a 20-pin PDIP through-hole package. It supports a single analog input channel and delivers up to 667 kSPS conversion rate using a semi-flash architecture, achieving a maximum conversion time of 2.5 us. The device operates from a single 4.5V to 8V supply with a 5V typical operating point. An analog-to-digital converter (ADC) is a data-acquisition integrated circuit that converts real-world continuous analog voltages into discrete digital codes that a microcontroller, microprocessor, or DSP can process. The 8-bit ADC0820 falls in the "moderate-resolution, high-speed" tier of the data-converter taxonomy: ADC -> successive-approximation / flash ADC -> data converter -> data-acquisition IC -> signal conditioning -> mixed-signal semiconductor. Semi-flash (or half-flash) converters like the ADC0820 use two parallel low-resolution flash stages to halve the number of comparators versus a true flash design while delivering comparable speed. Key features include parallel CMOS-compatible output, an input range of 0V to 5V, a built-in sample-and-hold that allows full throughput on rapidly changing signals, and ratiometric operation when the reference is tied to the supply. The track-and-hold function ensures accurate conversion of fast analog transients without an external SHA, simplifying front-end design. The semi-flash (two-step) architecture performs a coarse 4-bit conversion followed by a fine 4-bit conversion, generating the final 8-bit result in roughly 1.5 clock cycles. This topology yields low input capacitance and modest power consumption compared with true flash converters while avoiding the long acquisition times of successive-approximation ADCs. Typical applications include digital voltmeters, panel meters and bench instrumentation, process-control analog front-ends, video digitizing at sub-Nyquist rates, disk-drive servo control loops, and µP-based data-logging boards. The DIP-20 footprint and parallel interface suit legacy 8-bit microcontrollers and replacement of obsolete ADC0820 sockets without board rework. When designing with this part, place a 100 nF decoupling capacitor directly between V+ and GND as close to the pins as possible, and keep analog and digital grounds on a single low-impedance plane tied at one point. The reference input may be driven from a 2.5V precision reference or from the 5V supply for ratiometric conversions using bridge or resistive sensors. This page synthesizes current distributor availability, drop-in alternatives in the DIP-20 footprint, and practical PCB design notes for the ADC0820 family that are not found in the manufacturer datasheet.
ADC082S021CIMM - 8-Bit 200ksps 2-Ch SAR ADC | Texas Instruments
The Texas Instruments ADC082S021CIMM is a low-power, two-channel CMOS 8-bit analog-to-digital converter (ADC) with a high-speed serial interface, housed in an 8-VSSOP (DGK) package. It supports a sample rate range of 50 ksps to 200 ksps, operates from a single +2.7V to +5.25V supply, and consumes only 1.6 mW at 3V or 5.8 mW at 5V, making it well suited for battery-powered and space-constrained designs. The converter uses a successive-approximation register (SAR) architecture with an internal track-and-hold and delivers straight-binary output compatible with SPI, QSPI, MICROWIRE, and many DSP serial interfaces. The ADC082S021CIMM (without the NOPB suffix) is now listed as obsolete by DigiKey; the /NOPB lead-free variant with the same die and footprint is recommended for new designs. An SAR ADC is a type of analog-to-digital converter that uses a successive-approximation register to perform binary search on the input voltage. SAR ADCs are valued for their low power, deterministic latency, and excellent dynamic performance at moderate resolutions. The ADC082S021 belongs to the broader hierarchy of data converter ICs (ADC/DAC) within the signal-chain semiconductor category, and as an 8-bit device it targets applications that do not require high resolution but do need low latency and small size. Key features include an analog input bandwidth suitable for the 50–200 ksps range, a hardware-/SPI-compatible serial data output, an external SCLK input from 0.8 MHz to 3.2 MHz, and an industrial operating temperature range of -40°C to +85°C. The 8-pin VSSOP (DGK) package exposes one chip-select input and two analog input channels, plus the serial data output, SCLK, and supply pins. The simple digital interface requires only three digital lines (CS, SCLK, DOUT), which simplifies PCB routing in microcontroller- or DSP-based systems. Typical applications include portable instrumentation, sensor signal acquisition, battery monitoring, consumer audio level meters, industrial process controls, and handheld meters. The wide 2.7V–5.25V supply range allows direct connection to 3.3V or 5V microcontrollers without level shifters. Because the SAR architecture has no pipeline delay, the part is also well-suited to closed-loop control loops where deterministic conversion latency matters. When designing with this ADC, observe the analog input settling requirements and the source-impedance-driven acquisition time; use a low-impedance input buffer when the source impedance exceeds the datasheet limit. Decouple VA and VD with 0.1 µF and 10 µF capacitors placed as close as possible to the supply pins to keep digital switching currents out of the analog input path. This page synthesizes the manufacturer datasheet parameters with distributor pricing, drop-in alternatives (including the active /NOPB and -X tape-and-reel variants), and practical design notes that are not collected in a single datasheet table.
ADC082S101CIMM - 8-Bit 1Msps 2-Ch SAR ADC | 8-MSOP
The Texas Instruments ADC082S101CIMM is an 8-bit, 2-channel successive-approximation register (SAR) analog-to-digital converter that supports sample rates from 500 ksps to 1 Msps, housed in an 8-pin VSSOP (DGK) package. It operates from a single +2.7V to +5.25V supply, draws a low 1.6 mA typical supply current at 3V, and provides straight-binary serial output compatible with SPI, QSPI, MICROWIRE, and many DSP serial interfaces. Per the manufacturer datasheet, the converter delivers ±0.2 LSB typical INL and ±0.2 LSB typical DNL with no missing codes over the industrial -40°C to +85°C range, and integrates an on-chip track-and-hold with two single-ended analog inputs (IN1, IN2). An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a precision data-acquisition building block that converts an analog input into a digital code one bit at a time using a comparator and a binary-weighted DAC. It belongs to the medium-speed, medium-resolution converter hierarchy, sitting between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, slowest). SAR ADCs are widely used in industrial control, sensor signal conditioning, and embedded data acquisition because they combine deterministic latency, low latency-to-sample, low power dissipation, and small package size. The ADC082S101CIMM further targets cost-sensitive multi-channel systems by integrating a 2-input mux. Key features include 1 Msps maximum throughput (fSCLK = 8-16 MHz), 2 single-ended analog inputs with an internal analog mux, an external SCLK-driven serial frame, an active-low CONV/TRAIL signaling convention, and a power-down mode that drops quiescent current to under 1 µA between conversions. The VSSOP-8 footprint makes it one of the smallest 2-channel SAR ADC options on the market, ideal for space-constrained portable instrumentation. The architecture is a charge-redistribution SAR with a sample-and-hold front-end and a high-speed serial readout engine. The wide 2.7V-5.25V supply range lets the ADC082S101CIMM directly digitize 0-5V transducer signals powered from the same +5V system rail used by logic-class host MCUs, eliminating the need for level shifters. Typical applications include portable battery-powered instrumentation, industrial process-control sensor digitizers, motor-speed and position feedback loops, handheld multimeter front-ends, optical-sensor signal chains, and consumer-electronics audio/sensor front-ends. The low quiescent current extends battery life in portable systems while the 1 Msps rate handles most closed-loop control needs. When designing with this device, ensure the analog input drive amplifier is fast enough to settle within the acquisition window (typically 200 ns) - a low-output-impedance op-amp such as the OPA2350 is recommended. Add 0.1 µF and 10 µF decoupling capacitors close to VA and GND pins to keep SAR reference noise out of the conversion result.
ADC082S101CIMMX - 2-Ch 8-Bit 1MSPS SAR ADC | Texas Instruments
The Texas Instruments ADC082S101CIMMX is a 2-channel, 8-bit, 500 ksps to 1 MSPS successive-approximation-register (SAR) analog-to-digital converter housed in an 8-pin VSSOP (DGK) package. It operates from a single +2.7 V to +5.25 V supply, consuming 3.2 mW at 3 V and 9.6 mW at 5 V, and provides straight-binary serial output compatible with SPI, QSPI, MICROWIRE, and many DSP serial ports. An ADC (analog-to-digital converter) is a mixed-signal data-acquisition IC that samples a continuous-time analog voltage and converts it into a discrete digital code. Within the broader semiconductor taxonomy, ADC082S101 belongs to the SAR converter family (instantaneous sampling, no pipeline latency), which is a sub-class of data converters under signal-chain / data-acquisition ICs, itself part of the power management and analog signal-chain hierarchy. SAR ADCs are preferred where deterministic latency, simple serial interfacing, and low power are required. Key features include two single-ended input channels multiplexed into a single SAR core, throughput scalable from 500 ksps to 1 MSPS via an external SCLK between 8 MHz and 16 MHz, an input span of 0 V to VA, and an industrial -40 °C to +85 °C temperature grade. The VSSOP-8 footprint with 0.65 mm pitch suits compact, surface-mount designs. The device uses a charge-redistribution SAR architecture with an on-chip sample-and-hold and an internal reference equal to VA. The serial interface is a 4-wire SPI/QSPI/MICROWIRE-compatible port (CS, SCLK, DOUT, +VA/GND), with data clocked out on falling SCLK edges. Because VA doubles as the reference, no external reference component is needed, but rail noise directly couples into conversion accuracy. Typical applications include portable instrumentation, battery-powered sensor front ends, industrial process-control monitoring points, and consumer-system signal conditioning where a low-channel-count, deterministic-latency converter is sufficient. When designing with this device, place a 0.1 µF decoupling capacitor close to the VA pin and keep analog input traces short. Because VA is the reference, any noise or ripple on the supply rail will appear as conversion error; an LDO or RC filter on VA is recommended in noisy environments. The "M" trailing the part number denotes tape-and-reel packaging. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing an engineering-oriented decision resource.
ADC0831CCN - 8-Bit Serial SAR ADC, 1-Ch | Texas Instruments
The Texas Instruments ADC0831CCN is an 8-bit successive-approximation analog-to-digital converter with a serial I/O interface and a single differential analog input channel, housed in an 8-pin PDIP (N) through-hole package. It supports a 0V to 5V analog input range with a 4.5V to 6.3V VCC supply, delivering a typical conversion time of 32 µs using the built-in SAR clock. An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that resolves each conversion bit-by-bit against a precision internal DAC, achieving a deterministic conversion time independent of input signal. SAR ADCs sit in the hierarchy of data converters (ADC -> Nyquist ADC -> SAR ADC -> precision mixed-signal IC) and are favored for applications demanding low latency, zero pipeline delay, and DC accuracy without the switching noise of delta-sigma architectures. The ADC0831 family is a long-standing 8-bit SAR series originally introduced by National Semiconductor, now maintained under the TI brand. Key features of the ADC0831CCN include: 8-bit resolution, single differential input, serial (Microwire-compatible) digital output, on-chip sample-and-hold, ratiometric reference option (VREF tied to VCC), low power consumption of approximately 15 mW at 5V, and an operating temperature range of -40 °C to +85 °C. The converter requires only an external reference capacitor and a small RONREF resistor on the REF pin to set the reference voltage. Internally, the part uses a chopper-stabilized architecture for low offset, and the analog input is sampled on the falling edge of the conversion command. The serial data interface allows easy connection to microcontrollers, shift registers, or SPI-compatible controllers with a single chip-select signal. Typical applications for the ADC0831CCN include industrial process control sensor digitization, battery monitoring and portable instrumentation, panel-meter and digital-panel-meter analog inputs, simple embedded data acquisition, and legacy replacement of older discrete A/D circuits. The 8-bit resolution and ratiometric reference capability make it well-suited for bridge sensors, thermistor networks, and potentiometric measurements where the supply itself defines the full scale. Designers often pair the ADC0831CCN with a microcontroller's general-purpose pins because the serial interface requires only three wires (CS, CLK, DO). When designing with the ADC0831CCN, ensure the REF pin capacitor (typically 10 µF to 33 µF) and the RONREF resistor (typically 5 kΩ) are sized correctly for the chosen internal clock rate, and decouple VCC with a 0.1 µF ceramic capacitor placed close to the supply pin. Unlike modern 12/24-bit sigma-delta parts, the ADC0831CCN offers 8-bit resolution only, so it should be selected when 8-bit accuracy is sufficient rather than for precision measurement. This page synthesizes distributor availability, drop-in alternatives in the same PDIP-8 footprint, and practical interface notes not consolidated in the manufacturer datasheet.
ADC0831CCWM - 8-Bit Serial I/O ADC, 1-Ch, SOIC-14 | TI
The Texas Instruments ADC0831CCWM is an 8-bit successive approximation register (SAR) analog-to-digital converter with a single differential input channel and a serial MICROWIRE-compatible interface, packaged in a 14-pin SOIC (0.295 in / 7.50 mm width). Operating from a single 5 V supply, the device delivers a conversion time of approximately 32 µs and consumes roughly 15 mW of power. What is an SAR ADC: An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary-search algorithm against an internal DAC to determine each bit of the conversion. SAR ADCs are favored for medium-speed, medium-resolution sampling because they offer deterministic latency, low power consumption, and a small footprint compared to pipeline or delta-sigma converters of similar resolution. The ADC0831 specifically belongs to the ADC083x family of serial-output converters, which sits at the lower end of TI's data-converter portfolio and is positioned for cost-sensitive embedded designs. Key features of the ADC0831CCWM include serial I/O via TI/NSC MICROWIRE, a separate analog and digital ground pin for noise isolation, an on-chip sample-and-hold, and TTL/CMOS-compatible logic inputs. Per the TI product page, the device supports a single-ended analog input on the ADC0831 variant (versus the multiplexed ADC0838) and provides ±½ LSB or ±1 LSB total unadjusted error grades. Architecturally, the part integrates a capacitive DAC, comparator, SAR logic, and shift register in a single die. The serial interface uses CS, CLK, and DO pins, allowing multiple devices to share a bus. Because the ADC0831 lacks an internal clock, throughput scales directly with the externally applied CLK frequency, with typical applications driving the converter at 100 kHz to 1 MHz. Typical applications for the ADC0831CCWM include industrial process control, remote data acquisition via serial digital links, battery-powered instrumentation, sensor signal conditioning, and embedded microcontroller-peripheral interfaces where a small pin-count ADC is required. The wide SOIC package also suits hand-soldered prototypes and easy rework. When designing with this device, ensure the analog input is properly protected against over-voltage and that decoupling capacitors are placed close to the supply pin to minimize digital-induced noise coupling into the analog front end. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the TI datasheet for engineers specifying the ADC0831CCWM in new designs or supporting legacy boards.
ADC0832CCN - 8-Bit 2-Ch SAR ADC, MICROWIRE Serial, 8-PDIP | TI
The Texas Instruments ADC0832CCN is an 8-bit successive-approximation analog-to-digital converter with two configurable input channels, a serial MICROWIRE-compatible interface, and an 8-pin PDIP (N) package. It accepts a single-ended analog input on CH0 and a differential pair on CH1 (CH0+, CH1-), supports a sampling rate of approximately 31 ksps, and operates from a single 4.5V to 6.3V supply. The part is designed for low-cost embedded data acquisition and is a member of the ADC0831/0832/0834/0838 family that scales channel count without changing the serial protocol. A successive-approximation-register (SAR) ADC is a converter architecture that uses a binary search algorithm to resolve each conversion in a fixed number of clock cycles equal to the resolution. SAR ADCs are valued for deterministic latency, no pipeline delay, and excellent DC accuracy at moderate speeds, which makes them the dominant topology for industrial control, sensor read-out, and precision instrumentation in the 8-16 bit, 1 ksps to 1 Msps range. ADCICs in this family output data via a 4-wire MICROWIRE-style interface that maps directly to COPS processors and standard SPI shift registers. Key features of the ADC0832CCN include 8-bit resolution (1 LSB = VREF/256), 2 analog input channels (one single-ended, one differential), a serial MICROWIRE-compatible data port, internal sample-and-hold, a maximum sampling rate of approximately 31 ksps, and 4.5V to 6.3V single-supply operation. The 8-PDIP package supports through-hole PCB assembly, which is convenient for prototyping, legacy designs, repair, and hobbyist applications where surface-mount assembly is impractical. The internal SAR engine is clocked from the external serial interface clock; the converter uses an on-chip sample capacitor and an internal reference comparison path, allowing the user to connect an external reference (typically 5V) at the VREF pin. The serial I/O format is MSB-first with NRZ coding, and the chip-select line frames conversions, making the part simple to drive from a microcontroller UART or SPI peripheral in mode-0. The part draws only a few milliamps from a single supply and does not require a negative rail. Typical applications include process control analog front ends, panel-meter and instrumentation read-out boards, sensor signal conditioning for thermocouples and strain gauges, portable handheld test equipment, and hobbyist or education projects that benefit from through-hole pinout. The wide 0C to 70C commercial temperature range and 8-PDIP package support retrofits in legacy designs originally specified around the ADC0831 family. When designing with the ADC0832CCN, ensure the external reference is stable and decoupled at the VREF pin with a 0.1 uF ceramic capacitor, and that the analog input source impedance is below 10 kOhms to avoid conversion errors caused by the input sampling capacitor. Tie unused analog inputs to ground or to a defined mid-suprail voltage to minimize channel-to-channel crosstalk. This page synthesizes distributor pricing from real-time stock feeds, pin-compatible drop-in alternatives including the cross-brand XD0832CC identified in web sources, and practical design notes that supplement the manufacturer datasheet.
ADC0832CCWM - 8-Bit Serial I/O ADC w/ 2-Ch MUX | Texas Instruments
The Texas Instruments ADC0832CCWM is an 8-bit successive-approximation analog-to-digital converter with a 2-channel analog multiplexer and a serial I/O interface, housed in a 14-pin SOIC (WM) package. It accepts one single-ended input selected by the on-chip MUX, runs from a single 5 V DC supply, and provides a TTL/MOS-compatible serial data stream with a typical conversion time of 32 µs. The part belongs to the ADC083x-N family of serial-output SAR ADCs that share a common pinout across 1-, 2-, 4-, and 8-channel variants. A Successive Approximation Register (SAR) ADC is a sampled-data converter that uses an internal binary-weighted capacitor DAC and a comparator to perform a bit-by-bit search for the analog input level. Compared with integrating or flash converters, SAR ADCs offer a balanced trade-off between speed, accuracy, and cost for moderate-resolution measurement channels. The ADC0832 sits in the signal chain between analog sensors (temperature, position, voltage, current) and a microcontroller's digital domain, where it serves as the bridge that converts real-world analog signals into a serial bitstream that the MCU can read over a 2- or 3-wire synchronous interface. Within the broader hierarchy, the ADC0832 is classified as an ADC -> data converter -> signal chain IC -> semiconductor device. Key specifications include 8-bit resolution, ±½ LSB and ±1 LSB total unadjusted error grades (designated by the C and B suffix variants), a 5 V DC single-supply operating range, 15 mW typical power dissipation, and a 32 µs typical conversion time. The serial data interface uses CS, CLK, and DO pins to deliver the conversion result to the host controller, eliminating the need for a parallel data bus. The device is specified for an operating temperature range of -40 °C to +85 °C. The architecture uses a switched-capacitor DAC together with a chopper-stabilized comparator, allowing differential-style ratiometric measurements when paired with a reference voltage applied across the analog input span. Two software-selectable analog input channels make it suitable for measuring two sensors with one converter. The serial interface simplifies opto-isolation of the data path in noisy industrial environments. Typical applications include portable battery-operated instrumentation, remote-sensor data acquisition over isolated serial links, process-control front-ends, simple digital panel meters, and embedded 5 V MCU analog input modules. Designers should note that the part is in the legacy ADC083x-N family and is not recommended for new designs where TI suggests migrating to modern 12-/16-bit SAR converters such as the ADS1232 or ADS101x/ADS111x I²C family.
ADC0832CIWM/NOPB - 8-Bit Serial 2-Ch SAR ADC, 14-SOIC | Texas Instruments
The Texas Instruments ADC0832CIWM/NOPB is an 8-bit successive-approximation analog-to-digital converter with two multiplexed input channels, a serial MICROWIRE-compatible I/O interface, and an industry-standard 14-pin SOIC (SOIC-14) wide-body package. According to the datasheet, the converter supports a sampling rate of approximately 31 ksps, accepts a single supply, and provides separate analog and digital ground pins to preserve noise immunity in mixed-signal layouts. What is an SAR ADC? A successive-approximation-register analog-to-digital converter is a type of ADC that converts an analog input to a digital code using a binary-search algorithm driven by an internal DAC and comparator. SAR ADCs occupy a niche between high-speed flash and high-resolution delta-sigma converters: they deliver mid-range resolution (8 to 18 bits) at moderate speeds (tens of ksps to several Msps) with low latency and a small, deterministic acquisition window, making them well suited for multiplexed data-acquisition, instrumentation, and embedded control. The ADC0832 family sits at the lowest-resolution end of this hierarchy, where engineers choose it specifically for cost-sensitive or legacy-compatible designs rather than precision. Key electrical features include 8-bit resolution, two analog input channels selected via the dedicated MUXOUT/MUXIN pins in daisy-chain configurations, a serial data interface compatible with the NSC MICROWIRE protocol, and an operating temperature range of -40 °C to +85 °C (industrial grade). The wide-body 14-SOIC package simplifies hand prototyping and breadboarding while still supporting automated surface-mount assembly. The 'NOPB' suffix denotes a lead-free, RoHS-compliant finish. The ADC0832CIWM/NOPB uses a charge-redistribution capacitive DAC at the core of its SAR loop, with an internal sample-and-hold capturing the input at the start of each conversion. The two analog inputs share a common ground reference, so any common-mode noise present on both channels will be rejected by the differential input structure when used in pseudo-differential mode. The single-supply requirement reduces system complexity compared to ±15 V designs, although the absolute input range remains tightly bounded. Typical applications include portable battery-powered instrumentation, legacy sensor-interface boards, industrial process-control front ends, automotive telemetry nodes (non-safety), and embedded data-acquisition modules communicating with a microcontroller through SPI-like serial ports. The part is widely used in educational lab kits and in replacement designs where the original manufacturer-supplied SAR ADC has been discontinued. When designing with this device, engineers should observe the datasheet's decoupling guidance (a 0.1 µF bypass close to the supply pin) and confirm that the host microcontroller's SPI mode and clock polarity match the ADC0832's MICROWIRE timing. Input signals exceeding VDD + 0.3 V or below -0.3 V will forward-bias the input ESD diodes and may damage the part. This page combines distributor pricing, drop-in compatible alternatives, and practical design notes not always included on stock cross-reference sites.
ADC0834BCN/NOPB - 8-Bit 4-Ch SAR ADC, Serial I/O | TI
The Texas Instruments ADC0834BCN/NOPB is an 8-bit successive-approximation analog-to-digital converter with 2 or 4 configurable analog input channels, packaged in a 14-pin PDIP through-hole form factor. It uses an NSC MICROWIRE-compatible serial interface and supports a sampling rate of 31 kSPS, operating from a single 4.5 V to 5.5 V supply with commercial 0C to 70C temperature range. A SAR (Successive Approximation Register) ADC is a type of data converter that resolves one bit per clock cycle by comparing the sampled input against an internal binary-weighted DAC. SAR converters occupy a middle ground between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (slowest, highest resolution), making them ideal for general-purpose 8-12 bit data acquisition where moderate speed and deterministic latency matter. The ADC0834 belongs to the broader category of precision data converters / signal-chain ICs and integrates a sample-and-hold, internal clock, and configurable analog multiplexer in a single through-hole IC. Key features include 8-bit resolution with +/-0.5 LSB linearity (typical), single-ended analog inputs, an on-chip clock that eliminates external timing components, and CMOS low-power construction. The serial data output simplifies board routing by reducing pin count and isolating noisy analog ground returns. The /NOPB suffix indicates a lead-free, RoHS-compliant finish. Typical applications include process control instrumentation, portable measurement equipment, remote data acquisition modules, and embedded microcontroller analog front ends. Designers value the part for its ease of serial integration with legacy microcontrollers that lack built-in ADCs. When designing with this device, ensure the reference voltage is stable and decoupled, and observe the t_CSD timing when changing the multiplexer channel. The 14-pin PDIP form factor suits legacy designs and prototype work but is being phased out in high-volume new designs in favor of SOIC alternatives. This page synthesizes distributor pricing, drop-in 14-pin PDIP alternatives, and practical design notes not found in the bare manufacturer datasheet.
ADC0834CCWM - 8-Bit 4-Ch Serial I/O ADC, 14-SOIC | Texas Instruments
The Texas Instruments ADC0834CCWM (also marketed as ADC0834CCWM/NOPB) is an 8-bit successive-approximation analog-to-digital converter with a serial I/O interface and a 4-channel analog input multiplexer, housed in a 14-pin SOIC (0.295 in / 7.50 mm width) package. Per the manufacturer datasheet, the part runs on a single 5 V supply, draws 15 mW, and completes a conversion in 32 µs, yielding a sampling rate of approximately 31 kSPS. Total unadjusted error is specified at ±½ LSB (C-grade) or ±1 LSB, and the digital interface is compatible with NSC MICROWIRE plus standard TTL/MOS shift registers. A successive-approximation ADC (SAR ADC) is a class of data converter that determines the digital output one bit at a time using an internal DAC and comparator. The SAR architecture sits between flash converters (fastest, most expensive) and sigma-delta converters (highest resolution, lowest bandwidth). Multiplexed-input SAR ADCs like the ADC0834 family allow one conversion engine to serve multiple analog channels, which reduces cost and board area when several sensors must be digitized. The device belongs to the broader hierarchy: ADC → data converter → mixed-signal IC → semiconductor. Key features include differential or single-ended input modes selectable per channel, TTL/MOS-compatible serial data output that can be daisy-chained across multiple converters, and a separate analog/digital ground pin for noise isolation. The configurable input multiplexer supports 2- or 4-channel operation (the ADC0831 has 1 channel, the ADC0832 has 2, the ADC0834 has 4, and the ADC0838 has 8). The serial interface simplifies opto-isolation for remote-sensing applications. The ADC0834CCWM uses a switched-capacitor DAC ladder and an internal sample-and-hold architecture that acquires the input within the first three clock cycles after address loading. Differential reference operation is supported by tying the REF– pin to VCC/2, allowing bipolar or ratiometric measurements when paired with sensors such as strain gauges or thermocouples. The 32 µs conversion time is short enough for process-control loops and slow data-acquisition tasks. Typical applications include process-control remote digitizing, transducer interfacing, battery-powered instrumentation, and isolated serial data links. The wide supply tolerance and single 5 V rail also make it suitable for embedded microcontroller systems that need an extra ADC channel beyond the MCU's internal converter. When designing with this part, place 0.1 µF decoupling capacitors close to the VCC and digital-supply pins and separate analog and digital ground returns to a single star point. Note that the ADC0834 lacks an internal oscillator; the host MCU or CPLD must generate the I/O clock and chip-select sequence. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ADC0834CCWMX - 8-Bit 4-Ch Serial I/O SAR ADC | Texas Instruments
The Texas Instruments ADC0834CCWMX is an 8-bit successive-approximation analog-to-digital converter with a 4-channel analog input multiplexer, serial data I/O, and differential voltage reference inputs, housed in a 14-pin SOIC (WM) wide-body package. It accepts ratiometric analog inputs (0V to VREF) and offers 8-bit resolution with successive-approximation conversion, supporting either 4 single-ended or 2 differential analog input channels selected by software. A SAR (Successive Approximation Register) ADC is a class of data converter that performs a binary search through internal DAC and comparator hardware to resolve an analog input voltage into a digital code in a fixed number of clock cycles. SAR ADCs sit in the broader hierarchy of analog-to-digital conversion architectures, between flash converters (fastest, lowest accuracy) and integrating/sigma-delta converters (slowest, highest accuracy). Because SAR ADCs deliver deterministic latency and low latency (typically under 1 conversion cycle), they are commonly used in multiplexed data-acquisition, industrial process control, and embedded instrumentation where multiple channels must be sampled sequentially without a pipeline delay. Key specifications include 8-bit resolution, a 4-input analog multiplexer (configurable as 2 differential pairs), serial I/O (compatible with TTL/MOS logic and SPI/QSPI/microwire-style controllers), a single +5V supply operation, and an on-chip shunt regulator that allows the device to operate with high-voltage supplies (via a current-limiting resistor on the V+ pin). The differential reference inputs (VREF+/VREF-) support ratiometric measurements, where the ADC output code scales directly with the reference amplitude. This makes the part well suited to bridge-sensor, thermistor-divider, and potentiometer-position measurements where the excitation source also serves as the reference. Internally, the ADC0834 uses a charge-redistribution DAC and a CMOS comparator to perform successive approximation. The serial I/O port uses a 4-wire connection (CS, CLK, DI, DO) and includes a serial data output that can be chained to multiple ADCs for multi-channel expansion. The device offers a continuous-conversion mode in addition to single-shot conversion and provides a zero-scale/full-scale operating range that does not require external trimming. Typical applications include portable data loggers, digital panel meters, remote data-acquisition front-ends, pen-tablet digitizers, process-control analog front-ends, and any 5V-system embedded design that needs to digitize 4 to 8 channels with low pin-count serial I/O. When designing with this part, ensure that the analog inputs remain within the common-mode range of the reference and that decoupling (typically 0.1uF ceramic close to V+ and VREF) is provided. The shunt regulator pin (V+) requires a series resistor when operating from supplies above 6V. Take care not to exceed the absolute-maximum analog input voltage (VCC + 0.3V) to avoid latch-up. The serial clock rate must stay below the converter's maximum to preserve conversion accuracy. This page synthesizes distributor pricing (as of 2026-10-12), drop-in package-compatible alternatives from TI's ADC083x family, and practical design notes that extend the information gain beyond the manufacturer datasheet alone.
ADC08351CILQ/NOPB - 8-Bit 42MSPS ADC, 24-WQFN | Texas Instruments
The Texas Instruments ADC08351CILQ/NOPB is an 8-bit, 42 MSPS analog-to-digital converter with a single analog input channel, housed in a 24-pin WQFN exposed-pad package (4x5 mm). It is part of TI's legacy National Semiconductor ADC08351 family, designed for low-power, low-cost, high-speed digitisation in space-constrained designs. According to the manufacturer datasheet, the part operates from a single +3V supply and requires minimal external components, including optional a.c. input coupling via on-chip biasing. An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples continuous analog voltages and produces discrete multi-bit digital codes for downstream processors. The ADC08351 is a successive-approximation-register (SAR) style 8-bit converter with an internal sample-and-hold, positioned within the broader hierarchy of: ADC -> data converter -> signal-chain IC -> power management and signal-chain semiconductor. Its parallel digital interface and reference-free topology place it in the low-cost ADC category typically used in video, imaging, and digital communications front-ends. Key differentiating specifications include an 8-bit resolution, 42 MSPS sampling rate, 40 mW typical power dissipation, single +3V operation, parallel digital output interface, and a wide -40C to +85C industrial operating range. The exposed-pad WQFN-24 package (4x5 mm) provides low thermal resistance and small PCB footprint, enabling high-density designs. The internal input biasing allows a.c.-coupled analog signals without external coupling capacitors, reducing BOM cost. At the architecture level, the ADC08351 uses a flash-style or pipelined quantiser core with on-chip track-and-hold and an internal reference, achieving 40 mW dissipation at full 42 MSPS without requiring a driver amplifier on most inputs. Its simplified control interface (clock-only) is targeted at applications where a microcontroller or DSP cannot easily supply high-speed memory writes. Typical applications include video digitisation, digital still cameras, set-top box input capture, IF signal digitisation, and portable instrumentation. The combination of low cost, low power, and small package makes the ADC08351 well suited to high-volume consumer and industrial designs. When designing with this part, ensure the +3V supply is well decoupled near the exposed pad, route the parallel outputs with matched-length traces, and provide a solid ground plane beneath the exposed thermal pad to meet thermal and noise performance. This page consolidates verified distributor pricing, pin-compatible drop-in alternatives, and practical PCB design notes for the ADC08351CILQ/NOPB - synthesis not duplicated from the manufacturer datasheet.
ADC0838BCV - 8-Bit SAR ADC with 8-CH MUX | Texas Instruments
The Texas Instruments ADC0838BCV is an 8-bit successive-approximation-register (SAR) analog-to-digital converter with a configurable 4- or 8-channel analog input, a serial MICROWIRE-compatible I/O interface, and a 20-pin PLCC (J-lead) package measuring 9x9 mm. It converts at sample rates up to 31 kSPS, supports a single +5 V analog supply, and provides easy microprocessor or microcontroller interface through its synchronous serial data link. The device was originally released by National Semiconductor and is now manufactured under the Texas Instruments banner after TI absorbed NSC. An SAR ADC is a successive-approximation-register analog-to-digital converter, a subtype of the data-converter (ADC) category in the signal-chain/analog-IC hierarchy. Unlike integrating dual-slope or pipelined ADCs, SAR converters use a binary-search algorithm with an internal sample-and-hold and a precision DAC to determine each bit in N clock cycles. SAR ADCs are valued for low latency (one conversion in N cycles), moderate resolution (typically 8-18 bits), and zero pipeline delay, which makes them the workhorse choice for multiplexed data acquisition, sensor readout, and embedded control loops where deterministic per-channel timing is essential. Key features of the ADC0838BCV include 8-bit resolution, an integrated 8-channel analog multiplexer (configurable as 4 differential or 8 single-ended inputs), a separate analog and digital supply pin pair for noise isolation, and a chip-selectable MICROWIRE-compatible synchronous serial interface. The differential analog input structure allows rejection of common-mode noise in industrial environments, while the digital output is TTL/CMOS-compatible. The device offers low power operation suitable for battery-powered or remote sensor applications. The ADC0838BCV uses a charge-redistribution DAC and successive-approximation register built on a standard bipolar CMOS process. The 20-pin PLCC package provides robust through-hole-style lead robustness in a surface-mount footprint, making it easier to handle and inspect than fine-pitch QFN packages - useful in legacy designs, prototyping, and harsh-environment industrial equipment. Typical applications include multi-channel data-acquisition front-ends for industrial process control, transducer/thermistor/thermopile signal conditioning, portable instrumentation with battery-supply operation, multi-zone temperature monitoring, and embedded 8-bit sensor readouts for HVAC, appliance, and white-goods control boards. The integrated multiplexer makes it a strong fit when an MCU lacks an internal ADC or when more channels are needed than the MCU provides. When designing with the ADC0838BCV, route the analog and digital grounds as separate islands that meet at a single point near the AGND pin to avoid digital switching noise coupling into the analog input. Place the 0.1 uF analog supply decoupling capacitor as close as possible to the VCC pin, and keep analog input traces away from the serial clock and data lines. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - combining technical specification, supply-chain insight, and engineering judgement in one place.
ADC0838BCVX - 8-Bit SAR ADC, 8-Ch MUX, Serial I/O | Texas Instruments
The Texas Instruments ADC0838BCVX is an 8-bit successive-approximation analog-to-digital converter with a configurable 4- or 8-channel input multiplexer and a serial I/O interface, housed in a 20-pin PLCC (9x9 mm) package. The ADC0838BCVX accepts up to eight single-ended or four differential analog input channels and converts them to a digital word through a SAR architecture clocked from an external source. The serial data output is compatible with standard shift registers and microprocessors, allowing direct connection to SPI, Microwire, or generic shift-register-based controllers. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a type of ADC that uses a binary-search feedback loop against a precision DAC to converge on the input voltage in N clock cycles for an N-bit result. SAR ADCs are known for low latency, moderate accuracy, and excellent power efficiency compared to integrating or flash architectures, making them a workhorse in micro-controller-based data acquisition, sensor read-back, and instrumentation subsystems. Key features of the ADC0838BCVX include 8-bit resolution with no missing codes, a serial I/O that minimizes pin count relative to parallel-output ADCs, single 5V analog supply operation, and a versatile input multiplexer that supports both single-ended and pseudo-differential configurations. The device operates over the commercial 0C to +70C temperature range and uses successive approximation to balance conversion speed and power consumption in battery-aware designs. The SAR core clock runs from an external RC or system clock, allowing the conversion throughput to scale with the application’s needs. Because the digital interface is purely serial, the part competes favorably with parallel-output ADCs of similar resolution that consume more board area and microcontroller pins. The PLCC-20 package provides a through-hole-compatible socket footprint for legacy designs as well as surface mount compatibility. Typical applications include multi-channel sensor monitoring, digital panel meters, temperature and process instrumentation, portable data loggers, embedded system analog front-ends, and any application requiring a low-cost multiplexed ADC. The 8-channel MUX is particularly well-suited to reading several sensors with a single ADC channel, reducing component count and simplifying firmware. When designing with this device, place a 0.1 uF decoupling capacitor close to the supply pin and ensure the I/O CLOCK, /CS, and DO lines are kept short to preserve timing margins on the serial bus. The analog and digital grounds should be tied at a single star point to limit the converter’s reference noise. This page synthesizes distributor pricing, drop-in alternative candidates, and practical design notes not consolidated in the manufacturer datasheet, with the goal of accelerating selection during component shortages or redesign cycles.