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AD7858LBR-REEL - 12-bit 100kSPS 8-Ch ADC SOIC-24 | Analog Devices
AD7858LBR-REEL

AD7858LBR-REEL - 12-bit 100kSPS 8-Ch ADC SOIC-24 | Analog Devices

The Analog Devices AD7858LBR-REEL is a low-power, 12-bit, 8-channel successive-approximation-register (SAR) analog-to-digital converter (ADC) housed in a 24-pin SOIC wide-body package and shipped on a 13-inch tape-and-reel carrier. It operates from a single 3 V or 5 V supply, samples at up to 100 kSPS (the 'L' speed grade; the standard AD7858 reaches 200 kSPS), and integrates either 8 single-ended or 4 pseudo-differential input channels multiplexed to its on-chip track/hold and SAR core. The -REEL suffix indicates the SOIC-24 wide-body package and 2500-piece reel packaging. A SAR ADC is a successive-approximation-register analog-to-digital converter: a binary-search loop that compares the sampled input against a precision DAC in N clock cycles (N = resolution in bits) to produce a fully settled conversion in a single acquisition window. ADCs sit hierarchically inside the data-converter family (ADC/DAC), which in turn are a sub-category of mixed-signal and interface ICs in the broader integrated-circuits ecosystem. Key features of the AD7858L include 12 mW typical power consumption from a 3 V supply, automatic power-down to 25 µW between conversions, on-chip system and self-calibration that runs automatically on power-up, and a flexible serial interface compatible with most DSPs and microcontrollers. Operating temperature range is -40 °C to +85 °C (industrial grade), and the part is specified for VDD of 2.7 V to 5.5 V. The converter architecture is a charge-redistribution SAR with input span 0 V to VREF (with VREF typically tied to VDD). Eight single-ended channels are routed through an analog multiplexer; the user can configure the part for four pseudo-differential pairs by software. The wide SOIC-24 footprint simplifies hand prototyping and inspection compared to the SSOP variant. Typical applications include multi-channel data-acquisition front ends, industrial process-control loops, portable battery-powered instrumentation, and automotive sensor monitoring. The integrated multiplexer makes it a single-chip replacement for systems that previously needed an external analog switch. When designing with this part, place a 0.1 µF decoupling capacitor within 5 mm of the VDD pin and keep analog/digital ground returns separated to a single star point under the IC. Because this part is now obsolete, confirm last-time-buy stock and consider AD7858LBRZ-REEL or a modern alternative such as AD7606 for new designs.

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AD7862AR-10 - Dual 250kSPS 12-Bit ±10V ADC | Analog Devices
AD7862AR-10

AD7862AR-10 - Dual 250kSPS 12-Bit ±10V ADC | Analog Devices

The Analog Devices AD7862AR-10 is a high-speed, low-power, dual 12-bit successive-approximation analog-to-digital converter (ADC) with simultaneous sampling capability, specified for the standard industrial ±10 V input range, and housed in a 28-pin SOIC (R-28) wide-body package. The device operates from a single +5 V supply, integrates two independent 4 microsecond SAR ADCs, two track-and-hold amplifiers, an internal +2.5 V reference, and a high-speed parallel microprocessor interface. A simultaneous-sampling ADC is a converter whose two (or more) sample-and-hold stages acquire their input voltages at the same instant, eliminating the channel-to-channel time skew that would otherwise appear in multi-axis motor control, power-line monitoring, or three-phase measurement systems. By definition, an SAR (Successive Approximation Register) ADC walks an internal DAC bit-by-bit from MSB to LSB each conversion, delivering deterministic latency and excellent DC linearity - the architecture sits inside the broader family of data-converter ICs alongside flash, pipeline, sigma-delta, and dual-slope converters. The AD7862 belongs to that SAR sub-family at the low-to-mid speed tier (250 kSPS) optimized for multiplexed industrial signal chains rather than imaging or communications. Key specifications include 250 kSPS per-channel throughput, 4 microsecond conversion time, 4 analog inputs arranged as two channel pairs (VA1/VA2 and VB1/VB2) selected by the A0 logic input, ±10 V true-bipolar input range for the -10 variant, ±5 LSB maximum integral nonlinearity (INL), and 60 mW typical power dissipation. The internal +2.5 V reference eliminates external reference circuitry, while a hardware A0 line selects which channel pair is actively converting, allowing one device to monitor four sensors with two ADC cores. Architecturally, the AD7862 pairs two SAR cores with matched aperture-delay track-and-hold amplifiers, so the chip captures both signals simultaneously and then digitizes them sequentially through the shared digital interface. The internal reference, voltage-regulator front end, and parallel data bus combine to deliver AC performance such as 70 dB typical SNR and 80 dB typical CMRR at 50 kHz while keeping the BOM simple. Typical applications include AC motor control feedback, three-phase power-line monitoring, multi-axis servo systems, instrumentation, and data acquisition boards where two signals must be sampled within the same clock cycle. The wide ±10 V input is also attractive for PLC analog-input modules and process-control front ends that must accept industrial-level signals directly. When designing with this device, ensure that the analog inputs are protected against overvoltage beyond the ±10 V common-mode rail and that the +5 V analog supply is well decoupled with a 10 microfarad tantalum and a 0.1 microfarF ceramic capacitor placed close to the AVCC pin. The A0 channel-select line should be driven synchronously with the CONVST signal to avoid ghost conversion artifacts. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7862ARS-2REEL - Dual 250kSPS 12-Bit Simultaneous Sampling ADC | Analog Devices
AD7862ARS-2REEL

AD7862ARS-2REEL - Dual 250kSPS 12-Bit Simultaneous Sampling ADC | Analog Devices

The Analog Devices AD7862ARS-2REEL is a high-speed, low-power, dual 12-bit successive-approximation analog-to-digital converter (SAR ADC) with simultaneous sampling on two channels, packaged in a 28-pin SSOP (Shrink Small Outline Package) and supplied on a 2,500-piece reel. The device includes two track-and-hold amplifiers, an internal +2.5 V reference, and a high-speed parallel interface, making it a complete data-acquisition front end for one A/D conversion slot. A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a sampling data converter that uses a binary-search algorithm and an internal DAC to resolve an analog input to N bits in N clock cycles. SAR ADCs are valued for deterministic latency, excellent DC accuracy, and zero-latency single-shot conversion, which makes them the dominant architecture for multiplexed or simultaneously-sampled multi-channel industrial measurement, motor control, and instrumentation systems where each channel must be captured at a precise instant. Key features of the AD7862 include 250 kSPS per-channel throughput, simultaneous sampling across two ADC cores sharing one reference, single +5 V supply operation, a choice of input ranges (0 V to +2.5 V for the -2 input range variant, or ±10 V / 0 V to +5 V on -1 / -3 variants), and a high-speed parallel interface for direct connection to microprocessors, DSPs, or FPGAs. The -2 input-range selection is the bipolar ±10 V part with hardware input-range protection on the analog pins. The architecture uses two independent SAR cores clocked in parallel from a common conversion start signal, guaranteeing that VA1 and VA2 (or VB1 and VB2) are sampled on the same clock edge. An internal 2.5 V reference with low temperature drift supplies both ADCs, eliminating the need for an external reference and the associated noise and cost. Power dissipation is typically 60 mW at full throughput and drops to 5 µW in standby mode, enabling portable and battery-backed designs. Typical applications include multi-axis motor control (simultaneous current sensing on multiple phases), three-phase power-line monitoring, instrumentation and process control front ends, multi-channel data-acquisition cards, vibration and acoustic analysis front ends, and industrial control loops where channel-to-channel skew must be eliminated. When designing with this part, always place 100 nF decoupling capacitors as close as possible to the AVCC and DVCC pins and keep the analog ground plane separate from the digital ground plane, joined only at the AGND/DGND pins of the IC. Use a single 5 V supply that is well-regulated; ripple on AVCC directly appears as conversion noise. Because the device uses simultaneous sampling, ensure your DSP or FPGA reads both data words within the same control cycle to preserve the phase relationship. This page synthesizes Analog Devices datasheet specifications, distributor pricing, drop-in alternatives, and design notes that are not consolidated on the manufacturer datasheet alone - giving engineers a single point of reference for selecting and qualifying the AD7862ARS-2REEL in new designs and legacy replacements.

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AD7862ARS-3REEL - Dual 12-Bit 250kSPS ADC, ±2.5V | Analog Devices
AD7862ARS-3REEL

AD7862ARS-3REEL - Dual 12-Bit 250kSPS ADC, ±2.5V | Analog Devices

The Analog Devices AD7862ARS-3REEL is a high-speed, low-power, dual 12-bit successive-approximation analog-to-digital converter (ADC) housed in a 28-pin SSOP package. It operates from a single +5 V supply, contains two 4 µs SAR ADCs, two track-and-hold amplifiers, an internal +2.5 V reference, and a high-speed parallel interface. The -3 input-range option accepts ±2.5 V bipolar analog inputs, distinguishing it from the -10 (±10 V) and -2 (0 V to 2.5 V) variants. A successive-approximation ADC (SAR ADC) is a type of data converter that performs a binary search across an internal DAC to resolve an input voltage to N bits within a fixed number of conversion cycles. Dual-SAR ADCs place two complete SAR cores on one die, enabling truly simultaneous sampling of two signals - critical for power-converter control, motor drives, and multi-phase measurement where phase skew between channels would corrupt the result. Key features of the AD7862ARS-3REEL include 250 kSPS per-channel throughput, simultaneous sampling across two channels (four inputs total), ±2.5 V bipolar input range (variant -3), 4 µs conversion time per channel, on-chip 2.5 V reference, overvoltage protection on analog inputs, low 60 mW typical power dissipation, and a 50 µW power-saving mode. The high-speed parallel interface simplifies connection to microcontrollers, DSPs, and FPGAs without external glue logic. Typical applications include motor-control current sensing, three-phase power-line monitoring, multi-axis inertial measurement, data-acquisition front ends, and instrumentation. The simultaneous-sampling dual-core topology removes inter-channel skew, while the ±2.5 V range handles industrial signal levels without external attenuators. When designing with this part, place 0.1 µF decoupling capacitors close to each supply pin and keep analog/digital grounds separated until they join at the ADC GND pin. The internal 2.5 V reference can be bypassed with a 10 µF tantalum capacitor for low-noise operation; an external reference may be used for higher accuracy. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not typically aggregated on the Analog Devices product page.

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AD7863AR-10REEL - Dual 175 kSPS 14-Bit Simultaneous-Sampling ADC | Analog Devices
AD7863AR-10REEL

AD7863AR-10REEL - Dual 175 kSPS 14-Bit Simultaneous-Sampling ADC | Analog Devices

The Analog Devices AD7863AR-10REEL is a simultaneous-sampling dual 14-bit analog-to-digital converter (ADC) with a maximum throughput of 175 kSPS per channel, packaged in a 28-pin SOIC wide-body (0.295 inch / 7.50 mm) for surface-mount assembly and shipped on a 13-inch tape-and-reel. It integrates two successive-approximation (SAR) ADCs, two track-and-hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface on a single die built in Analog Devices' linear-compatible CMOS (LC²MOS) mixed-signal process. An ADC (analog-to-digital converter) is a data-conversion integrated circuit that converts real-world analog signals into discrete digital codes for processing by microcontrollers, DSPs, FPGAs, or ASICs. The SAR (successive-approximation register) architecture used in the AD7863AR-10 trades flash-level speed for extremely low power consumption and 14-bit resolution with no pipeline latency, making it ideal for multiplexed or simultaneous-sampling data-acquisition front ends. Within the broader IC taxonomy, this part is a precision ADC > data converter > signal-conditioning IC > analog mixed-signal IC. Key specifications include 14-bit resolution, 175 kSPS throughput, a 5.2 µs conversion time per channel, ±10 V or ±2.5 V bipolar input ranges (or 0 V to 2.5 V pseudo-bipolar with the -10 variant; the -10 suffix here denotes the input range option), and single 5 V supply operation. The on-chip 2.5 V reference with two 0.1 µF bypass capacitors simplifies BOM and reduces board area. Dynamic AC performance is specified and tested for phased-array sonar, adaptive filtering, and spectrum-analysis applications. Architecture details: each ADC channel uses a capacitive-DAC SAR core preceded by a track-and-hold amplifier that holds both channels simultaneously when the CONVST (conversion-start) signal is asserted, eliminating channel-to-channel skew. The high-speed parallel interface provides 14-bit data, BUSY, and end-of-conversion signaling, simplifying connection to DSPs and microcontrollers with parallel bus support such as the ADSP-21xx family. Typical applications include three-phase motor control and power-line monitoring, multi-axis motion control, simultaneous-sampling instrumentation, vibration analysis, and phased-array sonar. The bipolar ±10 V input range allows direct sampling of industrial-level signals without external signal conditioning. For these uses, the key design advantage is deterministic dual-channel sampling latency — both ADCs sample the same instant, so vector math (Clarke/Park transforms) can be applied without correction. When designing with the AD7863AR-10REEL, ensure adequate decoupling on AVDD and DVDD, and place the two 0.1 µF reference-bypass capacitors immediately adjacent to the VREF and AGND pins. The wide 28-SOIC footprint provides ample thermal headroom but routes BUSY, CONVST, and the parallel data bus carefully to avoid coupling into the analog inputs. This page synthesizes distributor pricing, authoritative drop-in alternatives from the AD7863 family and competing 14-bit simultaneous-sampling ADCs, and practical layout/thermal notes that complement (and in some places extend) the information in the manufacturer datasheet alone.

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AD7863AR-3REEL - Dual 14-Bit 175 kSPS ADC | Analog Devices
AD7863AR-3REEL

AD7863AR-3REEL - Dual 14-Bit 175 kSPS ADC | Analog Devices

The Analog Devices AD7863AR-3REEL is a simultaneous-sampling dual 14-bit analog-to-digital converter (ADC) that operates from a single 5 V supply and delivers up to 175 kSPS per channel in a 28-pin SOIC wide-body (0.295 inch / 7.50 mm) package supplied on tape-and-reel. The part integrates two successive-approximation ADCs, two track-and-hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface, providing true simultaneous sampling of two input channels with a 5.2 us conversion time per channel. The -3 input range variant accepts +/-10 V or +/-2.5 V bipolar inputs through on-chip scaling, eliminating external signal-conditioning resistors. An ADC (analog-to-digital converter) is a semiconductor device that transforms continuous analog voltages into discrete digital codes, and a successive-approximation (SAR) ADC achieves this conversion through a binary-search algorithm using an internal DAC and comparator. Dual simultaneous-sampling SAR ADCs sit within the broader data-acquisition IC hierarchy: ADC -> SAR ADC -> simultaneous-sampling ADC -> data-acquisition IC -> signal-chain IC -> semiconductor. They are essential whenever the relative phase between two analog channels must be preserved (motor control, three-phase power, vibration analysis). Key features include 14-bit resolution with +/-1 LSB typical integral nonlinearity, four analog input channels (two channels x two input ranges), 5.2 us conversion time per channel yielding 175 kSPS throughput, +/-10 V or +/-2.5 V software-selectable input ranges, internal 2.5 V reference (low-drift option available on -10 grade), single 5 V supply operation, low power consumption (~50 mW typical), and high-speed parallel output bus. The wide-body SOIC-28 package provides good thermal performance and easy hand-solderability for prototypes. The AD7863 is fabricated in Analog Devices' linear-compatible CMOS (LC2MOS) mixed-technology process, combining precision bipolar input stages with low-power CMOS logic. This architecture enables the +/-10 V true-bipolar input range without external resistor dividers while maintaining low noise and excellent DC accuracy across the -40C to +85C operating window. Typical applications include three-phase motor control current sensing, AC line voltage monitoring in power inverters, industrial data-acquisition front ends, vibration and modal analysis, multi-axis position sensing, and instrumentation requiring simultaneous capture of two analog signals with known phase relationships. Designers should ensure the single 5 V analog supply is well decoupled with both 10 uF bulk and 0.1 uF ceramic capacitors close to the supply pin, and follow the parallel-bus timing diagram carefully when interfacing to DSPs or microcontrollers.

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AD7863ARSZ-10REEL - 14-Bit 175kSPS Dual Simultaneous-Sampling ADC | ADI
AD7863ARSZ-10REEL

AD7863ARSZ-10REEL - 14-Bit 175kSPS Dual Simultaneous-Sampling ADC | ADI

The Analog Devices AD7863ARSZ-10REEL is a high-speed, low-power, dual 14-bit simultaneous-sampling analog-to-digital converter (ADC) supplied on a 5 V rail and housed in a 28-pin SSOP package. The part integrates two 5.2 microsecond successive-approximation ADCs, two matched track/hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface that delivers 175 kSPS per channel with simultaneous sampling across both inputs. With four analog inputs multiplexed through two channels (selected by the A0 logic input), a single CONVST edge places both track/holds into hold and initiates conversion on both ADCs at exactly the same instant, preserving phase information for multi-axis or polyphase systems. A successive-approximation register (SAR) ADC is a binary-search converter that compares the sampled input against an internal DAC, resolving one bit per clock cycle. SAR ADCs are prized for their deterministic latency, intrinsic anti-alias filtering (no switching ripple), and excellent DC linearity - characteristics that make the AD7863 particularly well suited to digitising sinusoidal signals, transducer outputs, and motor-control feedback. Within the broader taxonomy, the AD7863 sits at: ADC -> SAR ADC -> data converter -> signal-chain IC -> semiconductor. Key differentiating features include the simultaneous-sampling dual-channel topology, integrated 2.5 V reference (eliminating an external reference in many designs), low 50 mW typical power consumption from a single 5 V supply, and a high-speed parallel bus that simplifies connection to DSPs, FPGAs, and microcontrollers. The -10 speed grade is the 175 kSPS through-rate variant and is specified across the -40C to +85C industrial temperature range. Typical applications include three-phase motor control and power-line monitoring, instrumentation and data acquisition systems, multi-axis inertial measurement, industrial process control, and medical patient monitoring where synchronised channel capture is required. The internal reference plus parallel bus keeps the BOM small while preserving measurement integrity.

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AD7863ARSZ-3REEL - Dual 14-Bit 175 kSPS ADC | Analog Devices
AD7863ARSZ-3REEL

AD7863ARSZ-3REEL - Dual 14-Bit 175 kSPS ADC | Analog Devices

The Analog Devices AD7863ARSZ-3REEL is a high-speed, low-power, dual 14-bit simultaneous-sampling analog-to-digital converter that operates from a single 5 V supply. The device integrates two 5.2 microsecond successive-approximation ADCs, two track-and-hold amplifiers, an internal 2.5 V reference, and high-speed parallel interface logic in a 28-pin SSOP package, with reel packaging for high-volume assembly. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes. Within the converter hierarchy, successive-approximation register (SAR) ADCs occupy the mid-speed, mid-resolution niche, prized for low latency, deterministic acquisition, and excellent dc accuracy. Simultaneous-sampling SAR ADCs such as the AD7863 capture two channels at exactly the same instant, which is critical for phase-coherent measurements in motor control, power conversion, and instrumentation where vector relationships between signals must be preserved. Key features include four analog input channels arranged as two channel pairs (VA1/VA2 and VB1/VB2), true bipolar input ranges of +/-10 V or +/-5 V (variant dependent -3 is the +/-10 V range), 14-bit resolution with no missing codes, 175 kSPS throughput per ADC, and 5.2 microsecond acquisition time. The internal 2.5 V reference is laser-trimmed for low drift and may be overdriven by an external reference when system-level calibration demands it. Throughput is doubled relative to single-channel architectures because both ADCs sample and convert in parallel. Fabricated in Analog Devices' LC2MOS mixed process, which combines bipolar precision circuits with low-power CMOS logic, the AD7863 achieves high dynamic performance including 80 dB SNR and 90 dB channel-to-channel isolation at the input frequency band. These ac specifications support demanding signal-processing applications such as phased-array sonar, adaptive filters, and spectrum analysis. The parallel interface is directly compatible with standard DSPs and microcontrollers, simplifying system integration. Typical applications include three-phase motor control and power-line monitoring where simultaneous current and voltage sampling is mandatory, multi-axis industrial servo drives, data acquisition systems, and instrumentation requiring synchronized multi-channel measurement. The wide bipolar input range allows direct connection to current shunts, voltage dividers, and transducer bridges without external signal conditioning. Designers should evaluate input common-mode considerations when both channels must reject the same noise, and consider the internal reference bypass requirement of 0.1 microfarad ceramic capacitors on VREF to AGND. The SSOP-28 footprint is footprint-compatible with the AD7863ARZ-3 (SOIC-28) at the schematic level only - PCB layout differs because of the narrower body width. This page synthesizes distributor pricing, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single decision-ready reference for sourcing and replacement.

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AD7863ARZ-2REEL - Dual 14-Bit 175 kSPS Simultaneous-Sampling ADC | Analog Devices
AD7863ARZ-2REEL

AD7863ARZ-2REEL - Dual 14-Bit 175 kSPS Simultaneous-Sampling ADC | Analog Devices

The Analog Devices AD7863ARZ-2REEL is a high-speed, low-power, dual 14-bit successive-approximation analog-to-digital converter (SAR ADC) operating from a single 5 V supply, housed in a 28-pin SOIC (R-28) wide-body package rated for the industrial temperature range. It integrates two 5.2 μs SAR ADCs, two on-chip track-and-hold amplifiers, an internal 2.5 V reference (with option for external reference), and a high-speed parallel interface capable of 175 kSPS per channel with simultaneous sampling across both channels via a single CONVST edge. Input range is software-configurable to either 0 V to +5 V or ±10 V unipolar/bipolar modes, supported by four analog inputs multiplexed into two ADC channels through the A0 logic input. What is a simultaneous-sampling ADC? A simultaneous-sampling ADC is a data-converter architecture that captures two or more analog signals at the exact same instant through dedicated track-and-hold stages, then digitizes each channel in turn. This matters in motor-control, power-conversion and instrumentation systems where the phase and amplitude relationship between two voltages or currents must be preserved - sequential ADCs would smear that relationship over time. Simultaneous-sampling SAR ADCs sit within the broader hierarchy of data converters (ADC) → SAR ADC → precision ADC → signal-chain IC, and they are the precision counterpart to delta-sigma ADCs that trade speed for resolution. Key features include 175 kSPS throughput per channel, ±10 V and 0 V-to-5 V input ranges, 4-channel analog input multiplexing, internal 2.5 V reference (also configurable for external reference), single-supply 5 V operation with low 12 mW typical power dissipation, and an on-chip output register that buffers the last conversion result. The wide-body 28-SOIC package delivers robust thermal performance and easy hand-solder-friendly lead pitch for industrial and instrumentation layouts. AC dynamic performance (SNR, SINAD) makes the part suitable for phasor measurement, vibration analysis, and closed-loop control loops where both channels must be sampled within a single conversion cycle. Fabricated in Analog Devices' Linear-Compatible CMOS (LC²MOS) process, the AD7863ARZ-2REEL pairs precision bipolar analog front-ends with low-power CMOS logic to achieve the simultaneous-sampling behavior of a sample-and-hold subsystem on a single die, removing the need for external track/hold circuitry. The high-speed parallel interface also supports asynchronous conversion starts and provides a BUSY output plus an EOC (end-of-conversion) flag, simplifying host-microprocessor or DSP handshaking. The on-chip reference (with buffered output to VREF) eliminates an external reference component in many designs. Typical applications include 3-phase motor current and voltage sensing for variable-frequency drives, power-line phasor measurement and protective relays, multi-axis industrial data-acquisition front-ends, sonar and acoustic beam-forming front-ends, and vibration monitoring on rotating machinery. Simultaneous-sampling behavior is essential wherever phase relationships carry information - the AD7863ARZ-2REEL's 5.2 μs conversion time keeps channel-to-channel skew in the sub-microsecond regime, well within the timing budgets of 50/60 Hz power-system and 1-10 kHz motor-control loops. Design tip: when using the internal 2.5 V reference, place two 0.1 μF ceramic decoupling capacitors as close as possible to the VREF and AGND pins to minimize reference-noise coupling into the conversion result. When using an external reference, choose a low-noise, low-drift source such that reference noise does not become the limiting factor on the ADC's ac performance. This page synthesizes distributor pricing tiers, drop-in alternatives, and engineering design guidance drawn from the Analog Devices AD7863 datasheet and the real-world purchasing data on DigiKey, Mouser, and Octopart - information not bundled in any single manufacturer document.

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AD7865BSZ-2 - 14-Bit 4-Ch Simultaneous-Sampling 350kSPS ADC | ADI
AD7865BSZ-2

AD7865BSZ-2 - 14-Bit 4-Ch Simultaneous-Sampling 350kSPS ADC | ADI

The Analog Devices AD7865BSZ-2 is a fast, low-power, four-channel simultaneous-sampling 14-bit successive-approximation analog-to-digital converter (SAR ADC) in a 44-pin MQFP (10x10 mm) package. It operates from a single +5 V supply, integrates four track-and-hold amplifiers, an internal 2.5 V reference, an on-chip clock oscillator, and a high-speed parallel interface, and is specified at 350 kSPS per channel with a 2.4 µs successive-approximation conversion time per channel. The "-2" variant of the AD7865 family is configured for bipolar analog input ranges of ±5 V or ±10 V (HW/SW-selected) to interface directly with industrial ±10 V signal chains without external level shifting. A SAR (successive-approximation register) ADC is a type of Nyquist-rate converter that resolves one bit per clock cycle using an internal binary-search algorithm against a precision DAC; compared with delta-flush, flash, or pipeline ADCs, SAR converters are favored when high absolute DC precision, low latency, and low power dissipation must coexist. As a member of the broader data-converter category, the AD7865 belongs to the simultaneous-sampling ADC class used where multiple signals must be digitized at exactly the same instant - critical for phase-sensitive power, motor-control, and instrumentation applications. The simultaneous-sampling architecture eliminates the inter-channel phase error that plagues multiplexed-input ADCs in multi-phase systems. The AD7865BSZ-2 achieves 14-bit no-missing-code performance with 0.35 µs track-and-hold acquisition time, 80 dB SNR at 50 kHz input, and HW/SW-selectable bipolar input ranges (±5 V / ±10 V). The on-chip 2.5 V reference eliminates an external precision reference, and the high-speed parallel interface supports direct connection to DSPs, microcontrollers, and FPGAs. Compared with multiplexed multi-channel ADCs, the four simultaneous track-and-hold amplifiers preserve phase relationships between channels, which is essential for vector measurements in power-control loops and three-phase motor drives. Typical applications include three-phase motor control and inverter feedback, multi-axis industrial servo systems, simultaneous AC-line voltage and current monitoring, data-acquisition front ends for ±10 V industrial signal chains, power-quality and power-metering analyzers, and vibration/acoustic instrumentation. The wide bipolar input range allows direct digitization of industrial ±10 V signals without external signal conditioning. When designing with the AD7865BSZ-2, place the recommended 0.1 µF and 10 µF decoupling capacitors as close as possible to AVDD/DVDD pins to maintain SNR. The parallel interface may require external bus-isolation resistors when driving long PCB traces or backplanes. For system-level calibration, allow a 1 µs settling window between successive conversions and avoid driving the track-and-hold inputs beyond the absolute maximum ratings during fault events. This page synthesizes distributor pricing, drop-in AD7865-family alternatives, and practical design notes not found in the manufacturer datasheet, all aligned to the 2026-10-06 reference date.

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AD7865YSZ-1 - 14-Bit 350kSPS Quad Simultaneous-Sampling ADC | ADI
AD7865YSZ-1

AD7865YSZ-1 - 14-Bit 350kSPS Quad Simultaneous-Sampling ADC | ADI

The Analog Devices AD7865YSZ-1 is a 14-bit, 350 kSPS, 4-channel simultaneous-sampling successive approximation register (SAR) analog-to-digital converter in a 44-pin MQFP (10x10 mm) package, supplied from a single +5 V rail. The -1 input variant accepts ±10 V or 0 V to +5 V bipolar input ranges, with hardware or software channel selection and a per-channel throughput of 2.4 µs conversion time (≈380 kSPS aggregate when channels are multiplexed). What is a simultaneous-sampling SAR ADC? A simultaneous-sampling ADC integrates one track-and-hold amplifier per channel so that all four input signals are captured at exactly the same instant; this preserves phase relationships in multi-phase systems such as three-phase motor control or four-quadrant power monitoring. SAR architecture delivers deterministic latency and no pipeline delay, which makes the AD7865 well suited to closed-loop control where conversion determinism is critical. The device integrates four track/hold amplifiers, a 2.5 V on-chip reference, an on-chip clock oscillator, signal-conditioning input scalers, and a high-speed parallel microprocessor-compatible interface. Hardware or software selection of input channels (VIN1..VIN4) lets the user convert all four channels simultaneously, or sequence through them under software control. Power consumption is typically 115 mW at full throughput, dropping under software power-down for portable or battery-backed applications. Typical applications include AC motor control and three-phase power metering, data acquisition systems for industrial process control, multiphase vibration and inertial measurement, instrumentation and medical imaging front-ends, and any multi-channel control loop where phase coherence between channels is required. The wide ±10 V input range also suits direct connection to current shunts and transducer bridges after scaling. When designing with this part, observe the analog input common-mode and ESD handling rules in the AD7865 datasheet, keep the analog/digital grounds separated at a single point, and respect the 44-MQFP thermal envelope when operating at the full 350 kSPS throughput at elevated ambient temperatures.

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AD7872AN - 14-Bit 83 kSPS Sampling ADC | Analog Devices
AD7872AN

AD7872AN - 14-Bit 83 kSPS Sampling ADC | Analog Devices

The Analog Devices AD7872AN is a complete 14-bit successive-approximation analog-to-digital converter (SAR ADC) with a maximum throughput of 83 kSPS, housed in a 16-pin PDIP (N-16) through-hole package. The device integrates a track/hold amplifier, 14-bit ADC core, voltage reference, and three digital interface options - parallel, byte-wide, and serial - making it a drop-in solution for data-acquisition systems that previously required several discrete components. A SAR ADC (Successive-Approximation Register ADC) is a type of precision analog-to-digital converter that converts an input voltage to a digital code by sequentially comparing it against a precision reference using a binary search. SAR ADCs sit in the broader product hierarchy of ADC -> data converter -> mixed-signal IC -> semiconductor, and are favored for applications needing high DC accuracy and deterministic latency with no pipeline delay, in contrast to sigma-delta or pipeline architectures. Key features of the AD7872AN include 80 dB SNR at 10 kHz input frequency, 57 ns data-access time, ±5 LSB maximum integral nonlinearity (INL), bipolar ±10 V or unipolar 0 to +10 V input range (software configurable), and 50 mW typical power dissipation. The part uses Analog Devices' proprietary LC2MOS mixed-technology process and is specified for both DC accuracy and dynamic performance. Architecturally, the device combines a low-noise input amplifier, a buried Zener voltage reference, and a successive-approximation register with a precision DAC on a single die. The bipolar input stage uses a proprietary chopping technique that keeps integral linearity error below ±5 LSB over the industrial temperature range, while the high-speed comparator enables the 57 ns data-access time needed for high-speed parallel interface designs. Typical applications include industrial process control, instrumentation, spectrum analysis, and DSP front-ends. The wide input range and bipolar capability also suit motor-control current sensing and high-accuracy data-acquisition front-ends where a complete single-chip ADC with on-chip reference simplifies the BOM. Design consideration: the input signal source impedance should be kept below 1 kohm to avoid conversion errors caused by the input amplifier's bias current; add a 100 ohm series resistor with a 10 nF input capacitor for wideband noise filtering on high-impedance sensors. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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AD7873ARQZ - 12-Bit Touch Screen Digitizer ADC | Analog Devices
AD7873ARQZ

AD7873ARQZ - 12-Bit Touch Screen Digitizer ADC | Analog Devices

The Analog Devices AD7873ARQZ is a 12-bit successive approximation analog-to-digital converter (SAR ADC) with a synchronous serial interface and integrated low on-resistance switches designed to drive 4-wire resistive touch screens. It operates from a single 2.2 V to 5.25 V supply and delivers a throughput rate of 125 kSPS, packaged in a 16-pin QSOP (RQ-16). A touch screen digitizer is a specialized mixed-signal IC that combines an analog-to-digital converter, an integrated voltage reference, low-impedance analog switches, and coordinate-measurement firmware support. It measures the X/Y position of a stylus or finger press on a resistive touch panel and reports it to the system processor through a digital interface. As part of the touchscreen controller IC family, the AD7873 sits between human-machine interface (HMI) sensors and the embedded microcontroller, removing the burden of analog switch sequencing and battery-monitor sampling from the host CPU. Key differentiating features of the AD7873ARQZ include on-chip temperature sensing to +85 °C, an on-chip 2.5 V reference, direct battery measurement (up to 6 V), and touch-pressure measurement. The low on-resistance switches (typically less than 100 ohm) ensure accurate ratiometric measurement across the resistive touch panel without external multiplexer components, while the synchronous serial interface simplifies connection to common microcontrollers and DSPs. Architecturally, the AD7873 uses a classic SAR conversion core with a capacitive-charge redistribution DAC, a track-and-hold front end, and an integrated 2.5 V bandgap reference. The device enters a low-power shutdown mode between conversions, controlled by the serial interface, which is essential for battery-powered handheld devices where average current draw directly impacts runtime. Ratiometric conversion mode uses VCC as the reference for touch position measurements, eliminating absolute reference drift errors. Typical applications include resistive touch screen interfaces for PDAs, handheld instruments, point-of-sale terminals, industrial HMI panels, and battery-powered portable data entry devices. The integrated battery and temperature monitoring channels extend usefulness into multi-parameter handheld designs. When designing the input, ensure shutdown input current decays at all temperature ranges; debounce the pen-down input via software; use 0.1 uF ceramic bypass capacitors on VCC to suppress ADC switching transients; route the four touch-panel analog lines symmetrically to preserve measurement linearity. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7875LPZ-REEL - 12-Bit 100kHz Sampling ADC | Analog Devices
AD7875LPZ-REEL

AD7875LPZ-REEL - 12-Bit 100kHz Sampling ADC | Analog Devices

The Analog Devices AD7875LPZ-REEL is a complete monolithic 12-bit analog-to-digital converter (ADC) with on-chip track-and-hold amplifier, internal reference, and parallel/byte/serial digital interface, sampling at 100 kSPS in a 28-pin PLCC (LCCC, MO-047AB, LCC-28) package. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes, enabling microcontrollers, DSPs, and processors to interpret real-world signals. The AD7875 belongs to the successive-approximation-register (SAR) ADC category, which uses an iterative binary-search algorithm with an internal DAC to perform each conversion in a fixed number of clock cycles. SAR ADCs sit within the broader data-converter family, alongside delta-sigma and pipeline architectures, and are favored for multi-channel multiplexed and DC/front-end signal acquisition where deterministic latency and low latency are critical. Key features include a 2 µs acquisition track-and-hold front end, 8 µs A/D conversion time, on-chip 2.5 V buried-zener reference laser-trimmed for accuracy, 72 dB SNR at 10 kHz input, ±5 V dual analog supply operation, and three interface modes (12-bit parallel, 8-bit byte, and serial). The 28-terminal J-lead surface-mount package (QCCJ / PLCC) is rated for the commercial 0 °C to +70 °C temperature grade and ships in tape-and-reel format for high-volume assembly. Architecturally, the AD7875 integrates an analog input multiplexer/amplifier, the SAR core, internal reference, clock oscillator, and a flexible digital interface on a single CMOS die. The laser-trimmed buried-zener reference and clock remove two of the largest external bill-of-materials items typical of discrete 12-bit ADC designs, shrinking PCB area and improving long-term gain stability. Typical applications include industrial process control front ends, multichannel data-acquisition boards, motor-control feedback loops (shaft position, current sense), and instrumentation signal inputs where 12-bit resolution and 100 kSPS throughput are sufficient. The on-chip reference also makes the part attractive for portable or space-constrained designs where an external reference would be impractical. When designing with the AD7875, choose the supply range carefully: ±5 V supplies yield best SNR at the expense of higher power dissipation, while ±3 V operation reduces power at slightly lower dynamic performance. Decouple both AVdd and DVdd pins with 0.1 µF ceramic capacitors placed within 5 mm of the package to keep digital switching noise out of the analog front end. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not available in the bare manufacturer datasheet, providing engineers with a single reference point for sourcing and second-sourcing decisions.

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AD7876BR-REEL - 12-Bit 100kHz SAR ADC, 24-SOIC | Analog Devices
AD7876BR-REEL

AD7876BR-REEL - 12-Bit 100kHz SAR ADC, 24-SOIC | Analog Devices

The Analog Devices AD7876BR-REEL is a complete 12-bit successive-approximation analog-to-digital converter (ADC) with on-chip track-and-hold, on-chip reference, and parallel/byte/serial digital interface options, housed in a 24-pin SOIC wide-body package. An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary search algorithm and an internal capacitive DAC to convert an analog input voltage into a digital code over a fixed number of clock cycles. The AD7876 belongs to the broader data-converter hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. Built on Analog Devices' LC2MOS process, it integrates the entire signal path from analog input to digital word in a single IC, eliminating the external components required by older discrete ADC designs. Key features include a 100 kHz throughput rate, 2 microsecond track-and-hold acquisition time, 8 microsecond ADC conversion time, an on-chip buried-Zener reference laser-trimmed for accuracy, and 72 dB signal-to-noise ratio. The device supports bipolar input ranges of +/-5 V or +/-10 V via the AD7876BR (BR suffix) and offers parallel, byte, and serial interface modes for flexible microcontroller or DSP connectivity. Operating from a single +5 V supply, it consumes approximately 70 mW of power. The AD7876 uses a charge-redistribution switched-capacitor DAC architecture combined with a precision comparator and SAR logic to perform successive approximation. The internal reference and clock eliminate two of the most critical external components in ADC subsystems, reducing board area and improving long-term stability. Dynamic performance is specified for DSP users with SNR and harmonic distortion figures that make it suitable for both DC measurement and AC signal acquisition applications. Typical applications include industrial process control and data acquisition, motor control feedback loops, instrumentation and test equipment, medical instrumentation signal conditioning, and spectrum analysis front-ends. The wide input range and integrated reference make it well suited for industrial 4-20 mA loop digitization with appropriate signal conditioning. When designing with this device, decouple the +5 V supply with a 10 uF tantalum and 0.1 uF ceramic capacitor placed close to the supply pin. The analog input drive amplifier must settle within the 2 us acquisition window to avoid conversion errors. For best noise performance, keep digital and analog grounds separated and joined at a single star point near the ADC. This page synthesizes distributor pricing from 6 sources, drop-in alternatives from the Analog Devices AD787x family and pin-compatible cross-brand parts, and practical design notes not consolidated on any single datasheet or distributor page.

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AD7876CR-REEL - 12-Bit 100kHz Sampling ADC | Analog Devices
AD7876CR-REEL

AD7876CR-REEL - 12-Bit 100kHz Sampling ADC | Analog Devices

The Analog Devices AD7876CR-REEL is a complete 12-bit successive-approximation analog-to-digital converter (SAR ADC) with on-chip track-and-hold amplifier and 2.5 V on-chip reference, sampling at up to 100 kHz and housed in a 24-pin SOIC (RW) wide-body package delivered on 13-inch reels. What is a successive-approximation ADC? An SAR ADC is a precision data converter that performs a binary search across an internal capacitive DAC to digitize an analog input, settling one bit per conversion clock. The SAR architecture sits in the converter hierarchy between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, slowest). The AD7876 belongs to the broader category of data converters / signal chain ICs, specifically the precision mid-speed sampling ADC segment used in industrial, instrumentation and DSP front-ends. Key features of the AD7876 include a 2 µs acquisition track-and-hold amplifier, an 8 µs successive-approximation ADC core, ±10 V input range with overvoltage protection, and parallel (8/12-bit), byte, and serial digital interface options. The part delivers 72 dB SNR at a 10 kHz input and is fully specified for dynamic DSP parameters including signal-to-noise ratio, harmonic distortion and intermodulation distortion. Internal laser-trimmed scaling resistors and reference settle to within ±1 LSB. Architecturally, the AD7876 integrates a bipolar input front-end (resistor-scaled ±10 V), input protection clamps, the track/hold, the 2.5 V buried-Zener reference, the SAR logic and clock oscillator, plus a flexible three-state digital output port. The -REEL suffix indicates the tape-and-reel packaging option for high-volume SMT assembly. Operating from +5 V (VDD) and -5 V (VSS) supplies, it draws approximately 15 mW of power. Typical applications include industrial process control loops, multi-channel data acquisition systems, precision instrumentation, DSP front-ends, motor control position feedback and portable battery-powered measurement equipment. The wide ±10 V input range and dynamic specifications make it particularly suited to digitizing signals after sensor conditioning. When designing with the AD7876, provide well-bypassed analog and digital supplies and route AGND and DGND as a star ground to the system analog ground. For best dynamic performance in DSP applications, refer to the manufacturer's recommended layout in the datasheet. This page synthesizes distributor stock and pricing, drop-in cross-reference alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7878JPZ-REEL - 12-Bit 100kHz SAR ADC | Analog Devices
AD7878JPZ-REEL

AD7878JPZ-REEL - 12-Bit 100kHz SAR ADC | Analog Devices

The Analog Devices AD7878JPZ-REEL is a complete 12-bit analog-to-digital converter (ADC) with a maximum throughput of 100 kHz, integrating a track/hold amplifier, voltage reference, 8-word FIFO, and DSP-compatible serial interface into a single IC. Housed in a 28-pin PLCC (11.51 x 11.51 mm) plastic leaded chip carrier package, this successive-approximation-register (SAR) ADC operates from a single +5 V analog supply and a -5 V to -3 V negative supply, accepting bipolar input ranges of ±3 V or ±10 V (depending on configuration). According to the Analog Devices AD7878 datasheet, the converter delivers 2 microsecond acquisition time and 7 microsecond conversion time, with input voltage tolerance up to ±3 V as documented in the verified supplier listings. A successive-approximation-register ADC is a converter architecture that resolves one bit per clock cycle using an internal binary-weighted capacitor network and a comparator, then a digital-to-analog converter (DAC). This topology delivers deterministic latency, excellent DC accuracy, and inherently anti-alias-friendly sampling, making it preferred for multiplexed data-acquisition systems, motor-control feedback loops, and DSP front-ends where latency must be bounded. Within the broader converter hierarchy, SAR ADCs sit between flash converters (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, lowest bandwidth), with the AD7878 occupying the high-speed 12-bit niche favored in industrial control and instrumentation. Key features of the AD7878JPZ-REEL include: 8.3 kSamples/sec nominal throughput (per third-party spec sheet), 2 us track/hold acquisition time, 7 us conversion time, internal 3 V Zener reference, 8-word FIFO buffer for DSP handshake efficiency, and on-chip DSP-compatible serial interface logic. The LC2MOS (Linear Compatible CMOS) process combines precision bipolar analog stages with low-power CMOS digital logic, enabling the integrated DSP-ready interface without external glue logic. The commercial temperature grade (0 C to +70 C) suits indoor industrial, instrumentation, and laboratory equipment. Typical applications span process-control front-ends, multiplexed data-acquisition systems, DSP-input signal chains, motor-control position feedback, and laboratory instrumentation. The on-chip FIFO is particularly valuable when the host processor (DSP or microcontroller) cannot service every conversion interrupt; the 8-word depth absorbs timing jitter and reduces interrupt overhead. When designing with this part, ensure both +5 V (VDD) and -5 V (or -3 V) negative supplies are decoupled with 0.1 uF ceramic capacitors placed within 5 mm of the supply pins, and observe the maximum throughput vs. acquisition/conversion timing budget described in the datasheet timing section. The bipolar input requires input-signal conditioning to scale within the ±3 V (default) or ±10 V (with attenuation) input range. This page synthesizes distributor pricing, drop-in same-package alternatives, and PCB-level design guidance not found in the bare manufacturer datasheet, with parameters sourced from Analog Devices, DigiKey, Mouser, Octopart, and third-party spec repositories as of 2026-10-12.

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AD7878KPZ-REEL - 12-Bit 100kHz SAR ADC, DSP Interface | Analog Devices
AD7878KPZ-REEL

AD7878KPZ-REEL - 12-Bit 100kHz SAR ADC, DSP Interface | Analog Devices

The Analog Devices AD7878KPZ-REEL is a 12-bit successive-approximation analog-to-digital converter (SAR ADC) with a 100 kHz sampling rate, packaged in a 28-pin PLCC (J-Lead) form factor supplied on tape and reel. It integrates a track-and-hold amplifier with 2 µs acquisition time, the SAR core, an on-chip 3 V Zener reference, and an 8-word deep FIFO plus DSP interface logic in a single LC2MOS mixed-technology die. Operating from ±5 V analog supplies (or +5 V only with -5 V derived), the device delivers 72 dB signal-to-noise-plus-distortion ratio across commercial 0 °C to +70 °C ambient temperatures. A SAR ADC is a successive-approximation register analog-to-digital converter, a class of precision data converter that uses a binary-search algorithm and an internal precision DAC to compare the sampled input against successively halved reference voltages. SAR ADCs sit within the broader hierarchy of ADC architectures (SAR -> Nyquist-rate ADC -> data converter -> mixed-signal IC -> semiconductor), and are favored for applications that demand deterministic latency, no pipeline delay, and excellent DC accuracy in multiplexed or single-channel measurement front ends. Differentiating specifications include a 2 µs track-and-hold acquisition window, 7 µs A/D conversion time, 8-word FIFO buffer that decouples the DSP from sample timing, and DSP-port glue logic that lets the converter stream samples directly into Blackfin, SHARC, or TMS320-family processors with minimal host overhead. The LC2MOS process combines low-noise precision bipolar analog blocks with low-power CMOS digital logic, yielding the accuracy of bipolar ADCs at CMOS power levels. Architecturally, the AD7878 combines a switched-capacitor input stage, a charge-redistribution DAC array, a successive-approximation register, and an asynchronous DSP-compatible parallel/serial port. The internal Zener reference eliminates an external reference component, simplifying BOM while keeping gain error within calibration limits. Designers use the AD7878 when deterministic 100 kHz throughput, FIFO-buffered DSP streaming, and an integrated reference are all required simultaneously. Typical applications span industrial process-control front ends, motor-control current/voltage sensing, multi-channel data-acquisition boards for DSP-based systems, sonar and audio front ends, portable instrumentation, and embedded measurement modules. The 28-pin PLCC package is a JEDEC-standard plastic-leaded chip-carrier footprint compatible with widely available sockets and SMT assembly processes. When laying out a board, route the analog inputs as differential microstrip with a solid ground pour, place the 0.1 µF +VCC and -VCC bypass capacitors within 5 mm of the supply pins, and keep the digital DSP-port traces short and impedance-controlled to avoid coupling noise back into the analog front end. This page synthesizes distributor pricing, drop-in 12-bit SAR alternatives, application-specific design notes, and compliance information not bundled together on the manufacturer datasheet, giving engineers a single decision-ready reference for the AD7878.

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AD7878LN - 12-Bit 100kHz ADC with DSP Interface | Analog Devices
AD7878LN

AD7878LN - 12-Bit 100kHz ADC with DSP Interface | Analog Devices

The Analog Devices AD7878LN is a complete 12-bit, 100 kHz sampling analog-to-digital converter (ADC) with an integrated 8-word FIFO and DSP interface, housed in a 28-pin PDIP (N-28) through-hole package. It integrates a track-and-hold amplifier with 2 microsecond acquisition time, a 7 microsecond successive-approximation ADC core, a 3 V internal Zener reference, and the FIFO plus control logic for direct connection to high-speed DSP processors. The part achieves 72 dB SNR at 10 kHz input and is specified over the commercial 0 to +70 C temperature range, making it a classic LC2MOS data-acquisition front end. A successive-approximation register (SAR) ADC is a deterministic, sample-by-sample converter that compares the held input against an internal binary-weighted DAC using a precision comparator. SAR ADCs deliver deterministic latency, no pipeline delay, excellent DC linearity, and inherently strong anti-alias behavior when paired with an external analog filter, which is why they remain the preferred topology for multiplexed data-acquisition systems and DSP front ends where each conversion result must arrive on a known clock edge. Key features of the AD7878LN include 12-bit resolution with no missing codes, a maximum 100 kHz throughput, integrated track/hold with 2 microsecond acquisition, on-chip 3 V reference, an 8-word deep FIFO that decouples conversion timing from DSP read timing, and a DSP-friendly parallel interface. The wide digital host compatibility spans the ADSP-2100, TMS320, and DSP56000 families, allowing the part to drop into a range of signal-processing designs without glue logic. The device operates from a single +5 V analog supply plus a separate +5 V digital supply, providing isolation between the analog input chain and the noisy DSP bus. The architecture minimizes digital feedthrough into the analog front end and supports unipolar 0 to +5 V input ranges, simplifying signal conditioning for transducer and process-control signals. Typical applications include DSP-based data acquisition front ends, process control and industrial instrumentation, motor control feedback sampling, multiplexed analog input subsystems, and portable or bench-top test equipment that requires deterministic 100 kHz sampling with a fast DSP read path. The integrated FIFO is particularly valuable when the DSP must service interrupts or run real-time algorithms without losing samples. When designing with the AD7878LN, allocate board area for a 1 microfarad decoupling cap on each analog supply pin and place the analog input trace away from the parallel digital bus to limit coupling. Because the part is a through-hole 28-pin PDIP, it is best suited for prototype, instrumentation, and legacy industrial designs rather than high-density SMT assemblies; for SMT equivalents in the same family see the alternatives section.

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AD7887ARZ-REEL - 12-Bit 125kSPS 2-Ch SAR ADC | Analog Devices
AD7887ARZ-REEL

AD7887ARZ-REEL - 12-Bit 125kSPS 2-Ch SAR ADC | Analog Devices

The Analog Devices AD7887ARZ-REEL is a 12-bit successive-approximation-register (SAR) analog-to-digital converter (ADC) capable of 125 kSPS throughput from a single 2.7 V to 5.25 V supply. It offers 1 or 2 analog inputs, an integrated 2.5 V internal reference, and a high-speed SPI/QSPI/MICROWIRE/DSP-compatible serial interface. The part is supplied in an 8-lead SOIC (0.154 inch, 3.90 mm body width) and ships in a 2,500-piece Tape & Reel package, marked with the Z (lead-free, RoHS) finish. An ADC is a data converter that maps a continuous analog input voltage onto a discrete binary codeword. The 12-bit resolution means each LSB equals the full-scale range divided by 4096 - giving ~0.024% of FS step size and enabling precise measurement of low-bandwidth signals such as sensor outputs, motor currents, and instrumentation front-ends. Within the broader converter family, SAR ADCs excel where low latency, deterministic sampling, and excellent DC linearity are required, sitting between flash (fastest, lowest resolution) and sigma-delta (highest resolution, slowest) architectures. Key features of the AD7887 include a 500 ns input track-and-hold acquisition window, single-ended sampling architecture, straight-binary output coding, and a low-power CMOS process that consumes only a few milliwatts at full throughput. The serial interface can be operated from a single 3 V or 5 V supply, and dual-/single-channel mode is selectable through the on-chip control register. Power-down modes between conversions further reduce quiescent current to microamp levels, making the device attractive for battery and portable designs. Architecture-wise, the AD7887 combines a charge-redistribution DAC, a high-speed comparator, and an internal 2.5 V bandgap reference. The internal reference can be applied externally via the AIN1/VREF pin in single-channel mode, eliminating the need for an external reference IC and saving both cost and PCB area. Typical applications include industrial process control loops, portable and battery-powered instrumentation, motor-control current sense, optical sensor front-ends (e.g., photodiode signal conditioning), and general-purpose data acquisition in PLC and embedded systems. When designing with this device, bypass VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the pin and keep the analog input trace short and guarded from digital switching nodes. The internal reference needs at least a 1 uF external decoupling capacitor on the REFCAP pin for the 2.5 V reference to settle within datasheet limits. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical PCB/thermal notes that go beyond the AD7887 datasheet standalone.

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AD7888ARZ-REEL - 12-Bit 125kSPS 8-Ch Micropower ADC | ADI
AD7888ARZ-REEL

AD7888ARZ-REEL - 12-Bit 125kSPS 8-Ch Micropower ADC | ADI

The Analog Devices AD7888ARZ-REEL is a 12-bit, 8-channel, successive-approximation-register (SAR) analog-to-digital converter that operates from a single 2.7V to 5.25V supply and delivers up to 125 kSPS throughput in a 16-pin SOIC_N (R-16) surface-mount package, supplied on a 13-inch tape-and-reel. The part features eight single-ended analog inputs (AIN1 through AIN8), an on-chip 2.5V reference accessible at REF IN/REF OUT, and a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP serial ports. The input track-and-hold acquires a signal in 500 ns, supporting accurate sampling of fast-changing single-ended signals. An SAR ADC is a type of data converter that uses a binary-search successive-approximation algorithm to digitize an analog input, producing one sample per conversion cycle without the latency of pipelined or sigma-delta architectures. The AD7888 belongs to the SAR sub-family of analog-to-digital converters, which sits under the broader ADC category within data-converter ICs in the signal-chain block of mixed-signal systems. Low-power CMOS construction keeps typical dissipation at 2 mW during normal operation and only 3 uW in full power-down mode, making the part well-suited to battery-powered monitoring applications. Key features of the AD7888ARZ-REEL include a flexible reference arrangement (internal 2.5V reference or external 1.2V to VDD reference via the REF IN/REF OUT pin), a shutdown pin that drops quiescent current to microamp levels between conversions, and guaranteed operation over the -40C to +105C automotive-industrial temperature range. The wide supply range and simple SPI-compatible serial interface also ease integration with microcontrollers and DSPs that lack parallel ADC ports. Architecturally, the AD7888 uses a charge-redistribution DAC array with a sample-and-hold on each channel select, an internal oscillator that can be overdriven by an external clock for deterministic conversion timing, and automatic power-down between conversions to extend battery life. The 8 single-ended inputs share one ADC core, so channel switching is handled through the on-chip analog multiplexer; this keeps the package pin count to 16 while still serving multi-channel data-acquisition tasks. The serial interface supports daisy-chaining of multiple AD7888 devices for systems that need more than 8 channels. Typical applications include portable and battery-powered data acquisition, multi-channel sensor monitoring (temperature, pressure, strain, flow), industrial process control front ends, instrumentation and panel meters, and automotive sensor interfaces. Designers should pay particular attention to reference decoupling and analog-input filtering: place a 0.1 uF ceramic close to REF IN/REF OUT and a small RC network on each AIN to limit broadband noise that would otherwise degrade the converter's SNR. This page consolidates distributor pricing, 8-channel SAR alternative selections, and practical design notes that go beyond the manufacturer datasheet.

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AD7888BR-REEL - 12-Bit 125 kSPS 8-Ch SAR ADC | Analog Devices
AD7888BR-REEL

AD7888BR-REEL - 12-Bit 125 kSPS 8-Ch SAR ADC | Analog Devices

The Analog Devices AD7888BR-REEL is a high-speed, low-power, 12-bit successive-approximation analog-to-digital converter (SAR ADC) that operates from a single 2.7 V to 5.25 V power supply. Packaged in a 16-pin SOIC and shipped on a 13-inch tape-and-reel carrier, this micropower ADC achieves a 125 kSPS throughput rate while consuming only 2 mW typical power at 3 V, with a power-down current of 1 µA. A SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm to digitize an analog input in N conversion cycles for an N-bit code. SAR ADCs sit within the broader hierarchy of data converters (ADC -> Nyquist-rate ADC -> SAR ADC -> mixed-signal IC -> semiconductor). They are valued for low-latency conversions, deterministic behavior, and excellent DC accuracy without pipeline delay, making them ideal for multiplexed channel sampling in embedded systems. Key features include 8 single-ended analog input channels (AIN1-AIN8), an input track-and-hold with 500 ns acquisition time, a serial interface compatible with SPI/QSPI/MICROWIRE/DSP, and an analog input range of 0 V to VREF. The AD7888 operates from a single supply and offers low power consumption, which makes it suitable for battery-powered and portable designs. The converter's throughput of 125 kSPS supports multichannel scanning applications such as sensor arrays and process control. The AD7888 uses an on-chip clock and reference input buffer; external VREF up to VDD is supported. The serial interface allows direct connection to most modern microcontrollers and DSPs without glue logic. The architecture also integrates channel-selection logic, so a single command initiates a conversion on the addressed channel and streams the 12-bit result. Typical applications include portable instrumentation, data acquisition systems, battery-powered monitoring, industrial process control, and sensor signal conditioning. The wide supply range (2.7 V to 5.25 V) simplifies integration with 3.3 V and 5 V MCUs. When designing with this part, place 0.1 µF decoupling capacitors close to AVDD and ensure the serial clock stays below the rated throughput to avoid data corruption. For multi-channel scanning, sequence channel switches between conversions to allow full settling of the input track-and-hold. This page combines verified distributor stock data, drop-in SOIC-16 alternative MPNs, and practical design guidance not always visible in the manufacturer datasheet, giving engineers a single reference for evaluation, sourcing, and PCB design.

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AD7888BR-REEL7 - 12-Bit 125kSPS 8-Ch ADC SOIC-16 | ADI
AD7888BR-REEL7

AD7888BR-REEL7 - 12-Bit 125kSPS 8-Ch ADC SOIC-16 | ADI

The Analog Devices AD7888BR-REEL7 is a 12-bit successive-approximation analog-to-digital converter (ADC) offering 8 single-ended analog input channels, 125 kSPS throughput, and a serial SPI/MICROWIRE/QSPI-compatible interface, housed in a 16-pin SOIC_N package supplied on a 7-inch reel. It operates from a single 2.7 V to 5.25 V supply, includes an internal 2.5 V reference (or accepts an external REF input), and provides a power-down mode that drops supply current to under 1 µA for battery-aware designs. An ADC (Analog-to-Digital Converter) is a data-conversion IC that samples continuous analog voltage levels and translates them into discrete digital codes for microcontrollers, DSPs, or FPGAs. Within the converter hierarchy, the AD7888 sits in the SAR (successive-approximation register) sub-family of ADCs, characterized by deterministic latency and low power consumption compared to delta-sigma or pipeline architectures; it is itself part of the larger data-converter domain of mixed-signal ICs. Key features include a 500 ns input track-and-hold acquisition time, eight single-ended channels multiplexed to a single ADC core, a true analog input range of 0 V to VREF on each channel, daisy-chainable serial interface, and a hardware shutdown pin. The internal reference and channel sequencer reduce external component count, which is valuable in space-constrained sensor-interface PCBs. Technically, the AD7888 uses a charge-balancing DAC and a high-speed comparator inside its SAR loop to deliver 12-bit resolution without pipeline delay, making it well-suited to multiplexed applications that need deterministic per-channel conversion timing. Its low-power CMOS process keeps active current around 1 mA typical at full throughput. Typical applications include portable instrumentation, multi-channel sensor monitoring (temperature, pressure, strain-gauge bridges), battery-powered data loggers, and industrial process-control front ends where multiple slow-moving analog signals must be digitized by a single MCU. When designing with this device, ensure that the analog input pins are not driven above VDD or below GND, and add a 0.1 µF decoupling capacitor close to the supply pin to reduce digital-coupling noise on the analog sampling instant. This page synthesizes ADI-authorized datasheet data, current distributor pricing, and drop-in SOIC-16 cross-references so engineers can compare the AD7888 against modern pin-compatible ADCs in one place.

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AD7890AN-2 - 8-Channel 12-Bit Serial ADC | Analog Devices
AD7890AN-2

AD7890AN-2 - 8-Channel 12-Bit Serial ADC | Analog Devices

The AD7890AN-2 is an 8-channel, 12-bit data acquisition system from Analog Devices, integrating an input multiplexer, an on-chip track/hold amplifier, a high-speed 12-bit ADC, a 2.5 V reference, and a high-speed serial interface. It operates from a single 5 V supply and accepts an analog input range of 0 V to 2.5 V for the -2 version. The device is packaged in a 24-pin PDIP (N) package, suitable for through-hole mounting in industrial and instrumentation applications. A data acquisition system (DAS) is a complete signal chain that samples multiple analog signals, converts them to digital words, and transfers the data to a host processor. The AD7890AN-2 combines the multiplexer, track/hold, ADC, reference, and serial interface in a single IC, simplifying board design and reducing component count. It is part of the broader family of analog-to-digital converters (ADCs) used in industrial control, data logging, and medical monitoring systems. Key features include a fast 12-bit ADC with a 5.9 µs conversion time, eight single-ended analog input channels, and a serial interface that supports SPI-compatible communication. The on-chip 2.5 V reference eliminates the need for an external reference, while the track/hold amplifier ensures accurate sampling of dynamic signals. The device also allows separate access to the multiplexer and ADC, providing flexibility in system design. Technically, the AD7890AN-2 uses a successive approximation register (SAR) architecture, which offers a good balance of speed and power consumption. The 117 kSPS sampling rate is suitable for multi-channel monitoring applications where each channel is sampled sequentially. The serial interface reduces pin count and simplifies isolation in industrial environments. The device operates over the industrial temperature range of -40°C to +85°C. Typical applications include industrial process control, data acquisition systems, battery monitoring, and medical instrumentation. The 0 V to 2.5 V input range is ideal for sensors with unipolar outputs, such as temperature and pressure transducers. The serial interface allows easy connection to microcontrollers and DSPs. When designing with the AD7890AN-2, ensure that the analog input signals are within the specified range and that the reference is properly decoupled. The serial clock should be limited to the maximum specified frequency to ensure accurate data transfer. Consider using a low-pass filter on each analog input to reduce aliasing.

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