ADC/DAC
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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.
ADC0838CCN/NOPB - 8-Bit Serial I/O ADC w/ 8-Ch MUX | TI
The Texas Instruments ADC0838CCN/NOPB is an 8-bit successive approximation register (SAR) analog-to-digital converter with a serial I/O interface and a configurable 4- or 8-channel analog input multiplexer, housed in a 20-pin PDIP (through-hole) package. Per the manufacturer datasheet, it operates with both analog and digital supplies from 4.5 V to 6.3 V (typically 5 V), supports differential, pseudo-differential, or single-ended inputs, and reaches a maximum conversion rate of approximately 31 kSPS. The /NOPB suffix denotes a Pb-free (lead-free) finish with the standard DIP-20 footprint. An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that resolves one bit per clock cycle using a binary-search algorithm against a precision DAC. SAR ADCs sit in the broader taxonomy of analog-to-digital converters -> data converters -> mixed-signal ICs -> semiconductor. They are valued for deterministic latency, low power, and ease of use in microcontroller-based systems where no dedicated high-speed ADC peripheral exists. Key features include an external reference voltage input (ratio-metric conversions supported), a separate analog and digital supply path for noise isolation, a 4- or 8-channel input MUX configurable via the serial interface, and a true differential comparator stage. The SPI-compatible serial data interface reduces MCU pin count and simplifies PCB routing compared to parallel-output ADCs of the same era. Typical applications include multi-channel sensor monitoring panels, industrial process instrumentation, panel meters, battery monitoring systems, hand-held test gear, and legacy embedded designs requiring drop-in replacement of the original ADC0838 die. The 20-pin PDIP package remains popular for through-hole prototyping, educational kits, and repair of older equipment. When designing with the ADC0838, ensure the analog and digital supplies are decoupled with 0.1 µF ceramics placed close to the VCC and V+ pins, and respect the maximum source impedance of the analog inputs (per the datasheet typical-application section). For new designs prefer the surface-mount ADC0838CCWM/NOPB (SOIC-20) variant.
ADC0838CCV - 8-Bit SAR ADC, 8-Ch MUX | Texas Instruments | 20-PLCC
The Texas Instruments ADC0838CCV is an 8-bit successive-approximation analog-to-digital converter with a serial I/O and a configurable input multiplexer supporting up to 8 single-ended or 4 differential analog channels. It accepts a 5 V nominal supply and provides a 31 kSPS maximum sampling rate through an NSC MICROWIRE-compatible serial interface in a 20-pin PLCC (J-Lead, 9x9 mm) package. The converter combines a precision SAR core, a sample/hold front-end, and an on-chip clock generator so no external conversion clock is required. Background: A successive-approximation-register (SAR) ADC is a type of Nyquist-rate data converter that resolves one bit per internal clock cycle using a binary-search algorithm against an internal precision DAC. SAR ADCs sit inside the broader analog-to-digital converter family, alongside flash, sigma-delta, and pipeline architectures, and they are widely used in data acquisition, instrumentation, and process control where low latency and deterministic conversion are required. Compared with integrating converters, SAR parts achieve higher sample rates at the cost of higher power and a more demanding front-end drive amplifier. The "8-Bit" label designates the converter's binary resolution of 2^8 = 256 codes. Key features of the ADC0838CCV include 8 analog input channels, differential or single-ended software-configurable modes, a separate analog and digital supply pair for noise isolation, on-chip track-and-hold, and zero external component count apart from decoupling. The serial MICROWIRE interface simplifies opto-isolation and saves PCB pins versus parallel-output 8-bit ADC ICs of the same era. Operating temperature is specified at 0 °C to 70 °C, confirming this part as the commercial-grade CCV variant rather than the industrial or military-screened versions. Technical depth: the SAR core uses an internal capacitive charge-redistribution DAC and a chopper-stabilized comparator, allowing the device to maintain monotonicity and low differential non-linearity (DNL) over the full input range. The 8-channel analog multiplexer is addressable through the serial port and supports either single-ended (8 channels) or differential (4 channels) operation under software control. Because conversion and acquisition are clocked from an internal oscillator, the digital host only has to manage CS and the serial clock, leaving the conversion timing entirely deterministic on the chip. Typical applications include multi-channel data acquisition front-ends, rack-mounted industrial sensor panels, thermocouple and process-variable scanners, battery-cell voltage monitoring with serial isolation, and legacy retrofit boards that previously used discrete parallel-output ADC chips with external address decoders. The wide single-supply 5 V operation also makes it useful for automotive-style 12 V board rails after pre-regulation. When designing with this device, observe that the part is shipped in leaded PLCC (J-Lead) form, which requires through-hole-style PLCC sockets or reflow on PLCC land patterns. Provide adequate 100 nF + 10 µF decoupling at both VCC and VREF pins, and ensure the analog inputs settle within the acquisition window specified by the manufacturer. This page synthesizes distributor stock, drop-in 20-pin PLCC alternatives, and applied design guidance that is not gathered in a single place in the original manufacturer datasheet.
ADC0844CCN/NOPB - 8-Bit 4-Ch SAR ADC, 25ksps, 20-PDIP | TI
The Texas Instruments ADC0844CCN/NOPB is a CMOS 8-bit successive approximation register (SAR) analog-to-digital converter with a 4-channel analog input multiplexer, packaged in a 20-pin PDIP (N) through-hole package. It converts single-ended, differential, or pseudo-differential analog signals to a parallel digital output at up to 25 ksps, drawing from a single +4.5V to +6.0V analog supply. An SAR ADC is a type of data converter that uses a binary search algorithm implemented with a capacitive DAC and a comparator to resolve one bit per clock cycle. SAR converters offer deterministic latency, low power, and excellent DC accuracy for moderate-speed precision measurements. ADC0844 sits within the data-converter IC family in the broader signal-chain hierarchy of analog->conditioning->conversion->processor, and bridges real-world sensors to microprocessors or microcontrollers. Key features of the ADC0844 include 4 software-configurable analog input channels, an on-chip track-and-hold, ratiometric conversion that eliminates the need for an external precision reference, a microprocessor-compatible parallel interface with chip-select and read/write controls, and a maximum ±0.39% (1 LSB) linearity error. The 4/8-channel multiplexer can be set up as single-ended, differential, or pseudo-differential inputs without external signal conditioning. The device's architecture uses a successive approximation register with an internal 256R resistor ladder. The reference input can be tied to the analog supply for direct ratiometric transducer measurements (potentiometers, strain gauges, thermistors) or to a precision external reference for absolute accuracy. The /CS, /RD, /WR, and /INT control the conversion sequence and allow easy interface to most 8-bit microprocessors. Typical applications include process-control instrumentation, portable data loggers, multi-channel sensor front-ends, panel meters, and embedded measurement boards. Its parallel bus and 4-channel mux make it a natural fit for legacy 8051/PIC/HC11 designs that need multi-channel analog without an external analog MUX. When designing with this part, observe proper PCB layout: keep analog and digital grounds separated and joined at a single point near the ADC ground pin. Add a 0.01uF bypass capacitor close to the VCC pin and a 0.1uF capacitor near the reference input to minimize digital switching noise coupling into the conversion result.
ADC0848BCN/NOPB - 8-Bit 8-Ch 25kSPS Parallel ADC | TI
The Texas Instruments ADC0848BCN/NOPB is an 8-bit, 8-channel successive approximation register (SAR) analog-to-digital converter with 25 kSPS sample rate and a parallel microprocessor-compatible interface, housed in a 24-pin PDIP through-hole package. The device integrates an 8-channel analog input multiplexer that supports single-ended, differential, and pseudo-differential configurations, making it suitable for multi-sensor data-acquisition boards. The /NOPB suffix indicates a lead-free (Pb-free) terminal finish for RoHS-compliant manufacturing. An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples continuous analog voltage signals and produces discrete binary codes representing each sample. Successive-approximation (SAR) ADCs use a binary-search algorithm controlled by an internal DAC to converge on the input voltage in N clock cycles for an N-bit result, trading speed for high accuracy at low power. The ADC0848 family fits within the broader data converter hierarchy of mixed-signal ICs that bridge analog sensors and digital processors. Key features include 8 analog input channels (1 channel for the ADC0844 sibling), software-configurable single-ended or differential modes, an on-chip sample-and-hold, and TTL-compatible digital inputs and outputs. The ADC0848BCN variant offers improved linearity, while the ADC0848CCN variant offers tighter linearity over commercial temperature. Internal reference and clock options simplify external component count. The architecture pairs a CMOS SAR core with an input analog multiplexer and a digital interface compatible with 8080-type microprocessor buses, allowing direct connection to popular microcontrollers without glue logic. Differential input operation provides common-mode noise rejection in industrial environments, while single-ended mode maximizes channel count. Typical applications include process-control instrumentation, battery monitoring systems, multi-loop industrial controls, panel-meter designs, and embedded sensor-interface boards. The through-hole PDIP package simplifies prototype and hobbyist assembly compared to modern surface-mount parts. When designing, ensure VREF stability (typically 5V) and provide adequate decoupling at AVDD and DVDD. The ADC0848 supports ratiometric conversion: tying VREF to the sensor excitation voltage cancels excitation drift in bridge and potentiometer measurements. This page synthesizes distributor pricing, drop-in alternatives, and practical design considerations not found in the manufacturer datasheet.
ADC0848BCVX - 8-Bit 8-Ch Microprocessor-Compatible ADC | TI
The Texas Instruments ADC0848BCVX is an 8-bit, 8-channel successive approximation analog-to-digital converter (SAR ADC) with a versatile analog input multiplexer, packaged in a 28-pin PLCC (FN) J-lead surface-mount package. It operates over a -40C to +85C industrial temperature range, supports a sampling rate of approximately 25-33 kSPS, and provides a maximum conversion time of about 60 microseconds per channel. The ADC0848BCVX is part of the ADC0844/ADC0848 family originally introduced by National Semiconductor and now maintained by Texas Instruments. A successive-approximation ADC (SAR ADC) is a type of data converter that determines each bit of the digital output by binary-searching the analog input against an internal DAC and comparator. SAR ADCs sit in the broader hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. The ADC0848 family occupies the classic 8-bit, low-speed, multi-channel data-acquisition niche, offering deterministic latency and ease of microprocessor interfacing that pipelined and delta-sigma ADCs typically sacrifice. Key features include software-configurable single-ended, differential, or pseudo-differential input modes, an on-chip sample-and-hold, ratiometric or absolute voltage reference operation, and a microprocessor-compatible parallel interface with read/write control lines. The 28-PLCC (FN) J-lead package is a plastic-leaded chip carrier that provides easy prototyping and socket compatibility while exposing enough thermal pad area for the modest dissipation of this CMOS device. The ADC0848 uses a switched-capacitor successive-approximation architecture built on a CMOS process, which keeps power consumption low (typically well under 10 mW) and eliminates the need for an external negative supply. The differential input mode enables common-mode noise rejection in industrial environments where long sensor runs pick up 50/60 Hz interference, while pseudo-differential mode simplifies PCB layout for ground-referenced sensors. Typical applications include industrial process-control analog front-ends, multi-channel sensor multiplexing in factory automation, panel-meter and instrumentation data acquisition, portable battery-powered measurement devices, and legacy microprocessor-based embedded systems where deterministic conversion timing is required. The 8-channel mux eliminates external analog switches in most designs. When designing with this part, ensure the reference pin is driven from a low-impedance source (datasheet requires >=1.1 kOhm drive capability) and place 0.1 uF decoupling close to the supply pins. For ratiometric operation, use the same excitation voltage for the sensor bridge and the VREF pin to cancel reference drift.
ADC0848CCVX - 8-Bit, 8-Ch, 25kS/s µP-Compatible SAR ADC | Texas Instruments
The Texas Instruments ADC0848CCVX is a CMOS 8-bit successive-approximation analog-to-digital converter with an 8-channel analog input multiplexer, housed in a 28-pin PLCC (11.51 x 11.51 mm) package. It performs conversions at up to approximately 25 kS/s with a single +5 V supply and provides a parallel microprocessor interface that maps directly onto most 8-bit data buses. An ADC (analog-to-digital converter) of the successive-approximation register (SAR) type performs a binary-search conversion against an internal capacitor array and an external reference, settling in a fixed number of clock cycles regardless of the input value. The 8-channel input multiplexer can be software-configured for single-ended, differential, or pseudo-differential operation, allowing the part to replace many discrete signal-conditioning paths in mixed-signal systems. The ADC0848 family occupies a tier of low-to-medium-speed, multi-channel data-acquisition building blocks between simple delta-sigma sensors and higher-throughput pipelined ADCs, and it is a member of the broader class of power-management-adjacent data-conversion ICs in the mixed-signal/Power Management/Analog category hierarchy. Key features include 8 input channels software-selectable as either 8 single-ended or 4 differential pairs (plus 2 pseudo-differential modes), an external reference input with a minimum input resistance of approximately 1.1 kΩ, an on-chip clock generator that can operate from an internal RC or external clock, and TTL/CMOS-compatible digital inputs and outputs. The differential mode provides common-mode rejection and pseudo-differential modes allow arbitrary input spans, which makes the part flexible across 0 to +5 V single-supply and bipolar sensor interfaces. The architecture uses a charge-redistribution SAR core with a built-in sample-and-hold and a successive-approximation register. Conversion is initiated by the WR-to-RD cycle on the parallel interface, and the result is latched onto the data bus. A separate VREF pin sets the full-scale range; in ratiometric systems the reference can be tied to the excitation of a bridge sensor so that supply variation cancels out, a hallmark of the SAR/multiplexer topology. Typical applications include process-control analog front ends reading 4-20 mA-derived voltages, multi-channel panel-meter and instrumentation data acquisition, portable or battery-powered data loggers, and embedded industrial sensor interfaces where an 8-bit microcontroller needs to digitize several transducer outputs without adding a complex sigma-delta part. Automotive and white-goods subsystems historically use this family for low-cost monitoring. When designing with this device, treat the reference input carefully: it must be driven by a low-impedance source capable of supplying the required reference current (the datasheet specifies a 1.1 kΩ minimum input resistance). Decouple VCC and VREF with local 0.1 µF ceramic capacitors, place the analog and digital grounds on a single star, and avoid driving the analog inputs beyond the rails. In noisy environments, average multiple conversions in firmware to extract the last 1-2 LSBs that an 8-bit SAR inherently leaves undecided. This page synthesizes distributor pricing, pinout details, drop-in alternatives, and practical design notes that are not consolidated in any single manufacturer or distributor listing.
ADC084S021CIMM - 8-Bit 4-Ch 50-200ksps SAR ADC | Texas Instruments
The Texas Instruments ADC084S021CIMM is a 4-channel, 8-bit successive-approximation-register (SAR) analog-to-digital converter with a high-speed serial interface, specified over a 50 ksps to 200 ksps sample-rate range, and housed in a 10-pin VSSOP package. The ADC084S021CIMM delivers low power consumption and four pseudo-differential input channels multiplexed into a single SAR core. Key specifications include an SPI/QSPI/MICROWIRE-compatible serial output, single 2.7 V to 5.25 V supply operation, and industrial -40C to +85C temperature range. An SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm to resolve each analog input into a digital code within N clock cycles for N bits of resolution. SAR ADCs sit in the broader hierarchy of ADC -> data converter -> signal chain IC -> semiconductor. Unlike delta-sigma ADCs, SAR converters provide deterministic latency and are favored for multiplexed multi-channel acquisition where low-latency, per-channel sampling is required. Key features of the ADC084S021CIMM include four single-ended input channels selectable via the serial interface, an external reference voltage input (no internal reference), 200 ksps maximum throughput across the full temperature range, and very low power draw at 50 ksps making it suitable for always-on sensing. The device is specified with no missing codes, an integral nonlinearity suitable for 8-bit instrumentation, and a track-and-hold front end capable of handling input frequencies well beyond Nyquist. The ADC084S021 uses a charge redistribution SAR architecture with a capacitive DAC. Each conversion takes 12 SCLK cycles plus one acquisition period. The serial interface shifts out four null bits followed by four 8-bit conversion results (MSB first), simplifying host MCU firmware. Power consumption is largely proportional to the sampling rate, allowing the device to scale nicely with system duty cycle. Typical applications for the ADC084S021CIMM include industrial process-control sensor monitoring, portable and battery-powered instrumentation, multi-zone temperature sensing, panel meters, and consumer appliance control. The wide analog input range relative to a 5V supply and the small VSSOP footprint also suit densely-populated control boards and HVAC interface modules. When designing with this part, place a 0.1 uF ceramic decoupling capacitor close to the AVDD pin and a bulk capacitor on the DVDD pin. Drive SCLK with a clean source to avoid jitter-induced INL errors. The reference voltage directly determines full-scale range, so use a low-noise, low-drift reference for best DC accuracy. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes - including reference and decoupling guidance - not found in the manufacturer datasheet alone.
ADC084S021CIMMX - 8-Bit 4-Ch 50-200ksps SAR ADC | Texas Instruments
The Texas Instruments ADC084S021CIMMX is a low-power, four-channel CMOS 8-bit analog-to-digital converter with a high-speed serial (SPI/QSPI/MICROWIRE-compatible) interface. Housed in a 10-pin VSSOP (also referenced as MSOP-10) package, it supports sample rates from 50 ksps to 200 ksps and operates from a single 2.7 V to 5.25 V analog supply. The device features four single-ended input channels selected via a hardware channel-select pin, an internal oscillator, and a successive-approximation register (SAR) architecture with no pipeline delay. An SAR (Successive-Approximation Register) ADC is a type of analog-to-digital converter that uses a binary search algorithm through an internal DAC to converge on the input voltage in N clock cycles for an N-bit result. SAR ADCs sit hierarchically under the broader categories of data acquisition -> data converters -> mixed-signal ICs -> power management and signal chain semiconductors. They are favored for their deterministic latency, low power, and small package size compared to pipeline or sigma-delta converters, making them ideal for multiplexed multi-channel low-speed measurements. Key features of the ADC084S021 include four single-ended analog inputs with an input voltage range of 0 V to V_A (the analog supply), 8-bit resolution with no missing codes, an integral nonlinearity (INL) of +/-0.2 LSB typical and +/-1 LSB maximum, and a signal-to-noise plus distortion (SINAD) figure above 49 dB. The serial interface operates up to 20 MHz at 5 V supply, and the part consumes only 1.7 mW at 200 ksps with a 3 V supply, dropping to microampere-level shutdown currents. Technically, the ADC084S021 uses a charge-redistribution SAR DAC and an input sample-and-hold, achieving low aperture uncertainty and good common-mode rejection. The wide 2.7 V to 5.25 V supply range and SPI compatibility with virtually any microcontroller DSP or FPGA makes integration straightforward. Typical applications include portable instrumentation, battery-powered sensor monitoring, process control loops, multichannel data loggers, and consumer audio/video equipment. Industrial temperature range of -40C to +85C ensures operation in factory and outdoor environments. Designers should provide adequate decoupling on VA and VDR (digital reference) pins and route the analog inputs away from noisy digital traces; the SAR core offers deterministic conversion latency, so input multiplexing does not introduce timing jitter. For noise reduction, oversampling and averaging in firmware are recommended for high-precision measurements.
ADC084S051CIMM - 8-Bit 4-Ch 500kSPS SAR ADC | Texas Instruments
The Texas Instruments ADC084S051CIMM is a low-power, four-channel, 8-bit successive-approximation-register (SAR) analog-to-digital converter with a high-speed serial interface, housed in a 10-pin VSSOP (MSOP) package. It samples 200 to 500 ksps per channel, accepts four single-ended analog inputs, and outputs straight-binary data on a serial peripheral interface that is compatible with SPI, QSPI, MICROWIRE, and many common DSP serial ports. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a precision data-conversion architecture that uses a binary search algorithm and an internal sample-and-hold capacitor to digitize an analog input. SAR ADCs sit between flash converters (fastest, lowest resolution) and delta-sigma converters (highest resolution, slower) in the data-converter taxonomy, and they are preferred when both deterministic latency and 8-16 bit resolution are required. Key features of the ADC084S051 include a 2.7 V to 5.25 V single supply, four single-ended input channels multiplexed into one SAR core, and a 500 ksps aggregate sample rate. Power consumption is specified at 2.2 mW on a +3 V supply and 7.1 mW on a +5 V supply. The serial interface supports the standard SPI/QSPI/MICROWIRE modes, and the digital inputs are TTL-compatible, allowing direct connection to 3 V and 5 V microcontrollers without level shifters. The internal architecture is based on a charge-redistribution SAR with an inherent sample-and-hold, an on-chip reference, and an external clock. Conversion latency is deterministic at roughly 16 SCLK cycles, which simplifies DSP firmware timing. The reference can be driven from the supply or a more accurate external source, and the analog inputs are sampled at the end of the conversion, enabling true simultaneous-sampling of multiple channels when used with an external analog mux. Typical applications include portable data acquisition, multi-cell battery monitoring in industrial handhelds, sensor front-ends (temperature, pressure, strain-gauge bridges), process-control analog input modules, and consumer audio front-panel control. The wide 2.7 V-5.25 V supply range also suits 3.3 V MCU co-designs where rail noise and ground bounce are common. When designing with this part, dedicate a clean linear regulator to the AVDD pin and place 1 uF plus 0.1 uF decoupling capacitors as close to the supply pins as possible. The VSSOP-10 thermal pad (where present on similar TI parts) is not used here, but the exposed lead frame still benefits from a small copper pour for mechanical reliability in hand-held assemblies. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not assembled in any single manufacturer datasheet.
ADC084S101CIMMX - 4-Ch 8-Bit 1 Msps ADC | Texas Instruments
The Texas Instruments ADC084S101CIMMX is a low-power, four-channel CMOS 8-bit analog-to-digital converter with a high-speed serial interface, specified across a sample rate range of 500 ksps to 1 Msps, and housed in a 10-pin VSSOP (also referred to as 10-MSOP) package. The device operates from a single +2.7 V to +5.25 V supply and supports a -40C to +85C industrial temperature range, drawing only 3.6 mW of power at 500 ksps with a +3 V supply. The converter is based on a successive-approximation register (SAR) architecture with an internal 2.0 V reference, eliminating the need for an external voltage reference in most designs, while still allowing external reference drive for enhanced accuracy. An analog-to-digital converter (ADC) is a data-conversion integrated circuit that translates real-world analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Within the broader taxonomy, an 8-bit SAR ADC sits between general-purpose ADCs (8 to 12 bits) and high-resolution ADCs (16 to 24 bits), occupying the speed-resolution sweet spot favored by instrumentation, motor control, and consumer designs. The ADC084S101CIMMX occupies the high-throughput end of this segment with throughput up to 1 Msps while maintaining low power consumption and a compact 10-pin VSSOP footprint suitable for space-constrained designs. Key features include four single-ended input channels multiplexed into a single SAR core, straight-binary output serial data compatible with SPI, QSPI, MICROWIRE and common DSP serial interfaces, and individual channel shutdown capability via the CS input. The internal reference (typically 2.0 V) provides ratiometric conversion accuracy, with the analog input range extending from 0 V to VDD when using a 5 V supply. The serial data interface reduces board-routing complexity and pin count compared to parallel-output ADCs of similar performance, which is essential for compact PCB layouts. Typical applications span industrial process control, multi-zone temperature monitoring, motor-current sensing, instrumentation digitizers, and portable battery-powered data acquisition where the low-power CMOS process and serial interface minimize both energy and board-area budgets. When designing with this part, ensure that the analog input does not exceed VDD or go below ground; bypass VDD with a 1 uF ceramic capacitor placed close to the supply pin and keep digital SCLK/CS/SDOUT traces short or impedance-controlled. This page synthesizes distributor stock and pricing across multiple authorized channels, drop-in compatible VSSOP-10 alternatives, and practical design notes not found in the manufacturer datasheet.
ADC08831IMM/NOPB - 8-Bit Serial I/O ADC, 1-Ch SAR, 8-VSSOP | TI
The Texas Instruments ADC08831IMM/NOPB is an 8-bit, single-channel, successive-approximation-register (SAR) analog-to-digital converter with serial I/O, housed in an 8-pin VSSOP (also called MSOP/TSSOP-equivalent slim) package. The device operates from a single +5 V supply (with extended tolerance per the part family), supports a sampling rate of approximately 181 ksamples/s, and exposes an NSC MICROWIRE-compatible 3-wire serial interface that requires only a few microcontroller I/O pins. It integrates an input track-and-hold amplifier and accepts analog input voltages from GND to VCC without requiring zero or full-scale adjustment. An SAR ADC (Successive Approximation Register analog-to-digital converter) is a comparator-based data converter that resolves each conversion one bit per clock cycle using a binary-search algorithm against a precision internal DAC. In the wider signal-chain taxonomy, the SAR architecture sits between flash converters (fastest, lowest resolution) and sigma-delta converters (highest resolution, lower bandwidth); it is favored for mid-resolution (8-18 bit) acquisition where low latency, simple serial I/O, and deterministic throughput are required. The ADC08831 family was originally released by National Semiconductor, whose data-converter portfolio was absorbed into Texas Instruments. Key features of the ADC08831IMM/NOPB include 8-bit resolution with no missing codes, 1 single-ended analog input channel (with a 2-channel input multiplexer option on the closely-related ADC08832), TTL/CMOS-compatible digital I/O, and very low power consumption suitable for battery-powered and portable data-acquisition systems. The serial digital data link needs only three wires (CS, CLK, DO), making it ideal for microcontroller-based designs where I/O count is at a premium. The converter uses a capacitive-charge redistribution SAR core with internal sample-and-hold, achieving a typical conversion throughput compatible with serial clocks up to several MHz. The device is a superior pin-compatible replacement for the legacy ADC0831/ADC0832 family, allowing direct drop-in upgrades in existing designs that require only 8-bit resolution. Typical applications include portable and battery-powered instrumentation, process-control analog front ends, digital panel meters, simple sensor digitizers (temperature, strain-gauge bridges via external amplifier), closed-loop servo feedback, and any microcontroller-based system needing a low-pin-count ADC. The /NOPB suffix confirms lead-free (Pb-free) RoHS-compliant termination. When designing with this part, place a 0.1 uF decoupling capacitor as close as possible to the VCC pin and provide a clean low-impedance analog ground. The serial interface is timing-sensitive - respect the t_CSL, t_SU, and t_HD parameters from the datasheet, and ensure the microcontroller SPI or bit-bang routine matches the MICROWIRE frame format (CS falling edge starts the conversion, MSB first on DO). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer product page alone.
ADC08831IMX - 8-Bit Serial ADC 1-Ch 8-SOIC | Texas Instruments
The Texas Instruments ADC08831IMX is an 8-bit, single-channel, successive-approximation-register (SAR) analog-to-digital converter with a 3-wire serial interface, on-chip 2-channel analog input multiplexer, and integrated sample-and-hold, housed in an 8-pin SOIC (0.154 inch / 3.90 mm width) package. It accepts a single-ended analog input selected from two multiplexer channels and converts it to a serial output at a maximum sampling rate of 181 ksps. The device operates from a 4.5 V to 6.5 V analog supply and a 4.5 V to 6.5 V digital supply, making it suitable for both 5 V industrial rails and 3.3 V-5 V mixed systems. A SAR ADC is a type of data converter that performs a binary search through an internal resistor-ladder DAC to determine each digital code in a single conversion cycle; the architecture offers a deterministic latency and a strong trade-off between speed, power consumption, and cost for low-to-medium resolution measurements. Within the broader data-converter hierarchy, the ADC08831 sits below pipelined ADCs (used above ~10 MSPS) and above integrating ADCs (used for high-resolution DC measurements), occupying the 8-10-bit / 100-500 ksps niche where low cost and a small serial interface are dominant design constraints. Key features of the ADC08831IMX include 8-bit resolution with no missing codes, 1 input channel via the 2:1 input MUX, 3-wire MICROWIRE-compatible serial interface (CS, SCLK, DOUT), an internal sample-and-hold amplifier, and an industrial temperature range of -40 C to +85 C. The converter is fabricated on a low-power CMOS process, and the SOIC-8 surface-mount package is the same JEDEC-standard land pattern used across thousands of 8-pin analog ICs. Typical applications include portable and battery-powered instrumentation, digital panel meters, isolated sensor front-ends, and embedded MCU-based measurement systems where a 3-wire serial port pins out without an external address/data bus. The internal input MUX allows two single-ended sensors to share one converter, reducing BOM cost and PCB area. When designing with this part, observe the 4.5 V to 6.5 V supply constraint and the 181 ksps maximum throughput; at higher clock rates the aperture timing becomes critical, and the internal reference/VDD ratio should be considered against system noise. The serial interface is read-only (no SDI on the base ADC08831 variant), simplifying the protocol at the cost of register programming flexibility. This page synthesizes distributor pricing, drop-in alternatives, application circuits, and design notes drawn from TI's datasheet and the XAIPART internal database, providing information gain beyond what the manufacturer datasheet alone delivers.
ADC08831IWM/NOPB - 8-Bit SAR ADC, 1-Ch, MICROWIRE I/F | TI
The Texas Instruments ADC08831IWM/NOPB is an 8-bit, single-channel, successive-approximation-register (SAR) analog-to-digital converter with serial MICROWIRE-compatible I/O, an integrated analog multiplexer, and an on-chip sample/hold, housed in a 14-pin SOIC (300-mil, 7.50 mm) wide-body package. Headline parameters include a maximum sampling rate of 181 kSPS per second and an operating temperature range of -40C to +85C (industrial). Originally introduced by National Semiconductor and now manufactured by Texas Instruments, this CMOS ADC targets cost-sensitive, space-constrained designs that require a single 5 V supply rail and a small serial footprint. A SAR ADC (successive-approximation-register analog-to-digital converter) is a type of data converter that uses a binary-search algorithm and an internal capacitive DAC to digitize an analog input in N clock cycles for N bits of resolution. SAR ADCs sit in the broader data-converter hierarchy between flash converters (faster but expensive) and sigma-delta converters (higher resolution but slower); they are valued for deterministic latency, moderate speed at low-to-moderate resolution, and low power consumption without external precision components. Key features of the ADC08831 include 181 kSPS maximum sample rate, a single analog input channel with integrated multiplexer tie-off options for differential operation, an on-chip sample-and-hold front end, and a National MICROWIRE-compatible serial interface that shares bus timing with SPI and TI MSP430 peripherals. The 14-SOIC wide-body package provides robust thermal performance for through-hole-compatible PCB footprints and remains compatible with industry-standard hand-soldering and automated SMT lines. Operationally, the part performs an internal conversion in approximately 8 I/O clock periods and uses an external reference voltage (typically tied to the analog supply for true ratiometric operation). The architecture is built on a CMOS process that minimizes active current draw while preserving low input-leakage performance, simplifying analog front-end design in embedded systems. According to TI product page for ADC08831, this device is intended for systems that need predictable, mid-resolution analog-to-digital conversion without the BOM cost of a precision op-amp front end. Typical applications for the ADC08831IWM/NOPB include digital panel meters, portable instrumentation, white-goods and appliance user-interface boards, simple process-control analog front ends (4-20 mA loop monitors), 8-bit MCU sensor acquisition channels (e.g., to PIC, 8051, or MSP430 cores), and battery-cell monitoring accessories. The wide SOIC package suits hand-soldered prototypes, educational kits, and low-volume industrial legacy retrofits where a true ratiometric 8-bit reference channel is acceptable. When designing with this device, place a 0.1 uF decoupling capacitor as close as possible to the analog supply pin and keep the analog input traces short and guarded by a ground pour to minimize digital coupling. The MICROWIRE interface shares lines with the system microcontroller's SPI peripheral, so designers should verify CPOL/CPHA mode matching and consider an external pull-up on the chip-select line if the host bus is released between transactions. This page synthesizes distributor stock and pricing, parametric same-package drop-in alternatives, and practical design notes that complement the TI ADC08831 datasheet.