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AD7652ASTZRL

AD7652ASTZRL - 16-Bit 500kSPS SAR ADC | Analog Devices

The Analog Devices AD7652ASTZRL is a 16-bit, 500 kSPS successive approximation register (SAR) analog-to-digital converter with a parallel/serial data interface, a 2.5 V internal reference, and a unipolar analog input range. Housed in a 48-pin LQFP package, the part is supplied on a 13-inch tape-and-reel format suitable for high-volume SMT production. The device integrates a high-speed SAR core, on-chip reference, and a versatile digital interface, simplifying data-acquisition front ends that previously required a separate ADC plus external reference. What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a sampling ADC architecture that uses a binary-search algorithm against an internal DAC to resolve each analog sample into N bits. SAR ADCs trade the multi-megasample speeds of pipeline ADCs for excellent DC accuracy, low latency, and very low power consumption - making them the architecture of choice for industrial process control, instrumentation, and multi-channel data-acquisition systems where linearity and noise immunity are more important than absolute conversion rate. Key features of the AD7652 include 500 kSPS throughput, ±2 LSB INL (typical) at 16 bits, a true bipolar-capable analog input structure, a hardware-/software-controlled power-down mode, and a flexible digital interface supporting both parallel and serial (SPI/QSPI/MICROWIRE/DSP-compatible) readback. The on-chip 2.5 V reference is trimmed to ±0.2% (typical) and is also accessible externally, allowing the part to reference other circuit blocks while simultaneously serving the ADC core. The analog supply (AVCC) accepts 4.75 V to 5.25 V, and the digital supply (DVCC) accepts 2.7 V to 5.25 V, simplifying interfacing to 3.3 V and 5 V logic families. The internal architecture pairs a charge-redistribution DAC with a dedicated comparator and SAR logic clocked from an on-chip oscillator. Analog input is sampled through a true bipolar front end that accepts 0 V to 5 V (unipolar mode) or ±10 V / ±5 V / 0 to 10 V ranges when configured with the appropriate front-end scaling resistors. This eliminates, in many applications, the external signal-conditioning amplifier that would otherwise sit between sensor and ADC. Typical applications include industrial process control (PLC analog input modules), multi-axis motor control position feedback, medical instrumentation front ends, weigh-scale and strain-gauge digitizers, and general-purpose multi-channel data-acquisition boards. In motor-control loops the 500 kSPS rate and deterministic latency allow phase currents to be sampled coherently with the PWM carrier. In power-quality monitoring, the simultaneous-sample-with-track-and-hold combination on the AD7652 enables accurate capture of transient waveforms without external sample-and-hold circuitry. When designing with the AD7652, ensure the analog input is driven from a low-impedance source - typical 20 ohms or less - so that the 575 pF input capacitance settles within the acquisition window. Use a 4.7 nF ceramic decoupling capacitor on each AVCC pin placed within 5 mm of the package, and keep the analog and digital grounds joined at a single star point beneath the exposed pad of the LQFP. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with an at-a-glance view of how the AD7652ASTZRL compares to its closest pin-compatible peers.

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AD7653ASTZRL

AD7653ASTZRL - 16-Bit 1 MSPS SAR ADC | Analog Devices | LQFP-48

The Analog Devices AD7653ASTZRL is a 16-bit, 1 MSPS successive-approximation register (SAR) analog-to-digital converter that integrates a precision reference, sample-and-hold amplifier, and high-speed parallel/serial digital interface into a 48-pin LQFP package. The device operates from a single 5V analog supply, accepts a unipolar 0V-to-VREF /-VES analog input range, and offers no pipeline delay thanks to its SAR architecture. What is a SAR ADC? A successive-approximation register analog-to-digital converter is a precision data converter that resolves the input voltage through a binary search using a single comparator and a switched-capacitor DAC. Compared to pipeline ADCs, SAR converters offer zero latency (true single-shot conversion), deterministic behavior, and excellent DC accuracy with low power consumption, which makes them ideal for multiplexed data acquisition, industrial process control, and precision instrumentation. Within the broader signal-chain taxonomy, a precision SAR ADC sits above general-purpose 12-bit ADCs but below 18/24-bit delta-sigma converters in resolution, trading oversampling for single-cycle latency. Key features include 16-bit resolution with no missing codes, throughput of 1 MSPS in Warp mode (800 kSPS Normal, 666 kSPS Impulse), internal 2.5V reference, on-chip reference buffer, software-configurable analog input ranges (0V to VREF / 0V to 2×VREF), and selectable parallel or serial interface. The integrated reference eliminates external reference noise pickup and simplifies BOM. The pulSAR core delivers typical INL of ±1 LSB and SNR of 86 dB, supporting demanding measurement bandwidths. Architecturally, the AD7653 uses ADI's proprietary pulSAR switching technique that minimizes input transient currents and allows direct connection to high-impedance front-ends with minimal settling time. Power dissipation is 25 mW at 1 MSPS, scaling linearly with throughput - a major efficiency advantage over continuously-sampling converters. The device supports hardware/software configurable input ranges and provides an internal clock option. Typical applications include industrial process control (PLC analog front-ends), multichannel data acquisition systems, precision weigh scales, instrumentation and medical imaging front-ends, and digital oscilloscope input stages. The combination of true 16-bit accuracy, internal reference, and zero pipeline delay suits closed-loop control loops where each sample must be acted upon in real time. When designing with this device, ensure adequate input RC anti-alias filtering, place the AVCC decoupling capacitors as close as possible to the supply pins, and route the AGND/DGND grounds as a star at the device. Compared to discrete ADC + external reference designs, the integrated reference reduces long-term drift and improves thermal stability across the -40C to +85C industrial range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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AD7655ACPZRL

AD7655ACPZRL - 16-Bit 1MSPS 4-Ch SAR ADC | Analog Devices

The Analog Devices AD7655ACPZRL is a low-cost, 4-channel, 16-bit, 1 MSPS successive-approximation analog-to-digital converter (SAR ADC) housed in a 48-lead LFCSP-VQ (7x7 mm) package with an exposed thermal pad. Per the Analog Devices AD7655 datasheet, it delivers 1 MSPS throughput in normal mode and 888 kSPS in impulse mode, with bipolar or unipolar input ranges spanning ±10 V, 0 V to 5 V, and ±5 V. A successive-approximation register ADC is a converter architecture that performs bit-by-bit trial conversions using an internal DAC, comparator, and successive-approximation register, achieving low latency and deterministic behavior compared to pipelined or delta-sigma converters. The AD7655 belongs to the PulSAR family of precision SAR ADCs from Analog Devices, sitting within the broader iCMOS (industrial CMOS) high-voltage process family and the company's mixed-signal data-converter product line. Key features include dual track-and-hold amplifiers that allow simultaneous sampling of two channels, true 16-bit resolution with no missing codes, no pipeline delay inherent to its SAR architecture, parallel or serial (SPI/QSPI/MICROWIRE/DSP-compatible) digital interface, and an operating temperature range of -40C to +85C. Per the manufacturer datasheet, the part accepts a 5 V analog supply and operates from a flexible digital supply. Typical applications include multi-channel data acquisition systems, industrial process control, instrumentation, motor control feedback loops, and medical monitoring equipment. Its four simultaneous-sampling channels make it a natural fit for three-phase power monitoring, vibration analysis, and any polyphase measurement requiring synchronized conversion of multiple analog signals at high resolution. When designing with the AD7655ACPZRL, place 10 uF tantalum and 100 nF ceramic bypass capacitors as close as possible to the AVDD and DVDD pins, and ensure the exposed thermal pad is soldered to a continuous analog ground plane for thermal dissipation and low-impedance analog return. Driver amplifier selection matters: per the AD7655 datasheet, the 16-bit settling time must be verified before choosing an external op amp, as 0.1% or 0.01% settling specifications from amplifier datasheets can differ significantly from 16-bit (0.0015%) settling. This page synthesizes distributor pricing across DigiKey, Mouser, and authorized partners, drop-in alternatives within the ADI PulSAR family, and practical layout guidance that extends the manufacturer datasheet with engineer-focused perspective.

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AD7656YSTZ-1-RL

AD7656YSTZ-1-RL - 16-Bit, 250kSPS 6-Ch Bipolar ADC | ADI

The Analog Devices AD7656YSTZ-1-RL is a 16-bit, 250 kSPS, 6-channel simultaneous-sampling successive-approximation ADC with true bipolar analog inputs, packaged in a 64-pin LQFP (ST-10x10). It is the tape-and-reel, reduced-decoupling variant of the AD7656-1 family, manufactured on Analog Devices' iCMOS (industrial CMOS) process for low power and high precision. What is a successive-approximation ADC (SAR ADC)? A SAR ADC is a converter architecture that uses a binary search algorithm and an internal capacitive DAC to compare the sampled input against a reference. Each conversion takes a fixed number of clock cycles and produces a deterministic, low-latency result. SAR ADCs are valued for low power consumption, zero pipeline delay, and excellent DC accuracy, making them the standard choice for multi-channel data-acquisition systems, motor control, and instrumentation where simultaneous sampling and precise per-channel timing are required. Key features of the AD7656YSTZ-1-RL include six independent 16-bit ADC cores, six true bipolar inputs with pin- or software-selectable ranges of ±5 V, ±10 V, 0 V to 5 V, and 0 V to 10 V, simultaneous sampling driven by three CONVST pins (one per ADC pair), and an integrated 2.5 V on-chip reference. The device supports both a high-speed parallel interface and a serial interface, allowing flexible connection to microprocessors, DSPs, or FPGAs. Power consumption is reduced to 140 mW at full throughput, with a power-down mode that drops the supply current to 6 µA. Architecturally, the AD7656-1 family is pin- and software-compatible with the original AD7656/AD7657/AD7658 family, but with significantly reduced decoupling requirements - a single 0.1 µF capacitor on each AVCC is sufficient. The iCMOS process combines high-voltage bipolar input structures with sub-micron CMOS logic on one die, allowing ±10 V true bipolar inputs from a single 5 V supply. The internal reference can be used to drive the ADC and a small external buffer, or an external reference can be applied for ratiometric measurements. Typical applications include multi-axis motor control and power-line monitoring, multi-channel instrumentation and process control, and data-acquisition systems. The wide bipolar input range, simultaneous sampling, and serial/parallel interface flexibility make it ideal for industrial PLC analog front-ends and three-phase power-quality analyzers. When designing with the AD7656YSTZ-1-RL, note that the bipolar input range of ±10 V must be respected on every channel - the input clamps protect the device only up to ±20 V. Place a single 10 µF plus 100 nF decoupling pair near each AVCC pin and keep analog and digital grounds joined at a single point beneath the exposed pad. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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AD7657YSTZ-REEL

AD7657YSTZ-REEL - 14-Bit 6-Ch 250 kSPS Bipolar ADC | Analog Devices

The Analog Devices AD7657YSTZ-REEL is a 14-bit, 6-channel, simultaneous-sampling successive-approximation analog-to-digital converter (SAR ADC) housed in a 64-pin LQFP (10x10 mm) package, qualified for automotive temperature grades (-40C to +125C) and supplied on a 7-inch reel. It delivers a per-channel throughput of 250 kSPS from six independent ADCs sharing one package, with true bipolar analog inputs and pin-/software-selectable input ranges of +/-5V, +/-10V and 0-5V/0-10V. The device is fabricated on Analog Devices' iCMOS (industrial CMOS) process, which combines high-voltage silicon with submicron CMOS and complementary bipolar transistors to deliver the high analog input ranges of +/-10V or +/-5V from a single 5V supply. A successive-approximation ADC is a converter architecture that uses a binary-search algorithm against an internal precision DAC to digitize an analog input in N clock cycles, where N is the resolution. SAR ADCs are prized for their deterministic latency, lack of pipeline delay, and excellent DC accuracy, which is why they dominate multi-channel data-acquisition front ends where phase coherence between channels matters. The AD7657's six independent SAR cores, paired with three CONVST pins, allow simultaneous sampling of three ADC pairs - a critical capability for three-phase power, motor control and vibration analysis. The bipolar +/-10V input range, single 5V supply, low power consumption at 250 kSPS and simultaneous sampling across six channels make this ADC ideal for industrial automation, motor control, multi-axis vibration monitoring and power-line monitoring. The high-speed parallel and serial interface can be connected to microprocessors or DSPs without external signal conditioning. When designing with the AD7657, pay close attention to the analog input anti-alias filter: each of the six channels requires its own RC network sized for the desired input bandwidth. Also note that the bipolar input range is achieved by on-chip attenuation and level shifting, so the source impedance must remain below the value recommended by the datasheet to preserve linearity.

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AD7658YSTZ-REEL

AD7658YSTZ-REEL - 12-Bit 250 kSPS 6-Ch Simultaneous-Sampling ADC | Analog Devices

The Analog Devices AD7658YSTZ-REEL is a 12-bit, 250 kSPS, 6-channel, simultaneous-sampling, bipolar-input successive-approximation ADC housed in a 64-pin LQFP (10x10 mm) package. It integrates six independent SAR ADCs on a single die using the proprietary iCMOS (industrial CMOS) process, which combines high-voltage silicon with submicron CMOS and complementary bipolar technologies. Each ADC channel features true bipolar analog inputs with pin- or software-selectable input ranges of ±10 V or ±5 V, and the device achieves 86.5 dB SNR at 50 kHz input frequency. An analog-to-digital converter (ADC) is a data acquisition component that converts continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation register (SAR) ADCs are valued for their deterministic latency, low power, and high DC accuracy, making them a mainstay in industrial measurement, instrumentation, and motor-control signal chains. The AD7658YSTZ-REEL sits at the top of the SAR hierarchy: 6 independent SAR cores -> multi-channel SAR ADC -> data acquisition IC -> signal chain -> mixed-signal system. A simultaneous-sampling architecture is critical for three-phase power, polyphase vibration, and any application that requires per-channel phase alignment. Key differentiating features include six independent ADC cores (not multiplexed), true bipolar ±10 V / ±5 V inputs that accept industrial signal levels directly without external signal conditioning, an integrated 2.5 V on-chip reference with reference buffers to reduce external BOM, and high-speed parallel, serial, and daisy-chain interface modes for SPI/QSPI/DSP/microprocessor connectivity. Power dissipation is 140 mW at 250 kSPS with 5 V supplies, and three independent CONVST pins allow the three ADC pairs to be sampled simultaneously but triggered independently. The wide analog input bandwidth supports AC-coupled measurement paths. The iCMOS architecture allows the bipolar ±10 V / ±5 V input range to be supported directly on a single 5 V supply, eliminating the negative rail typically required by legacy bipolar ADCs. This simplifies power tree design and reduces PCB area in multi-supply systems. The device offers a fast throughput rate of 250 kSPS per channel, low input current, and on-chip reference buffering that minimizes the external reference drive burden. Typical applications for the AD7658YSTZ-REEL include three-phase power-line monitoring and power-quality metering, multi-axis vibration analysis for condition monitoring, simultaneous data acquisition in industrial process control, PLC analog input modules, motor control and inverter feedback, and medical instrumentation such as patient-monitoring front ends. The simultaneous-sampling architecture is essential wherever phase relationships between channels must be preserved. A key design consideration is that the LQFP-64 footprint requires careful thermal relief for the exposed pad and that the on-chip reference, while sufficient for many applications, may be bypassed by an external reference if higher absolute accuracy is required. The suffix -REEL indicates Tape & Reel packaging suitable for high-volume SMT assembly. This page synthesizes distributor pricing, true drop-in alternatives from Analog Devices' own product family, and practical design notes not aggregated in the manufacturer datasheet.

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AD7663ASTZ

AD7663ASTZ - 16-Bit 250kSPS Bipolar PulSAR ADC | Analog Devices

The Analog Devices AD7663ASTZ is a 16-bit, 250 kSPS successive-approximation-register (SAR) analog-to-digital converter built on the PulSAR® charge-redistribution architecture. Housed in a 48-pin LQFP (7x7 mm) package, it operates from a single 5 V analog supply, accepts true bipolar ±10 V or 0 V to 5 V / 0 V to 10 V analog inputs, and provides both parallel and serial digital interfaces. A SAR ADC is a successive-approximation register analog-to-digital converter that uses a binary-search algorithm and a charge-redistribution DAC to convert an analog input to a digital code in one conversion cycle per bit. SAR ADCs combine low latency (no pipeline delay) with deterministic latency, moderate-to-high resolution (12-18 bits), and excellent DC accuracy, making them ideal for multiplexed data acquisition, industrial process control, and instrumentation front-ends where small analog signals must be captured precisely at moderate sampling rates. Key specifications include 16-bit resolution with no missing codes, ±3 LSB (max) INL (0.0046% of full scale), 90 dB typical SNR at 100 kHz input, and -100 dB typical THD at 100 kHz. The analog supply range is 4.75 V to 5.25 V and the digital supply can be 3 V or 5 V. Throughput is 250 kSPS in parallel-word mode and 200 kSPS in serial mode. The bipolar input range is achieved with on-chip input scaling and a wide-input-range driver, eliminating the need for external signal conditioning in most applications. The AD7663 uses the proprietary PulSAR core, a switched-capacitor charge-redistribution architecture that delivers low power dissipation (typically 35 mW at 250 kSPS) and excellent dynamic performance for AC and DC signals. On-chip calibration removes gain and offset errors, while the input span logic allows software selection of ±10 V, 0-5 V, or 0-10 V ranges without external resistor networks. Typical applications include industrial process control and data acquisition, multichannel multiplexed PLC analog input modules, precision instrumentation, vibration and acoustic analysis, medical imaging front-ends, and spectrum analyzer IF digitizers. The wide input range and high DC accuracy suit 4-20 mA loop digitization after a sense resistor. A key design consideration is the requirement for adequate bypass capacitance on both AVDD and DVDD rails (typically 10 µF tantalum plus 100 nF ceramic) and short, symmetric analog traces to the IN+ and IN- pins to preserve common-mode rejection. Designers should also configure the OB/2C pin, the input range selection, and the read mode (parallel/serial) before issuing conversion starts. This page synthesizes real-time distributor pricing, parametric alternatives with the same 48-LQFP footprint, and practical design guidance drawn from the Analog Devices AD7663 datasheet, not duplicating the raw datasheet content.

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AD7666ACPZRL

AD7666ACPZRL - 16-Bit 500kSPS SAR ADC w/ Ref | Analog Devices

The Analog Devices AD7666ACPZRL is a 16-bit, 500 kSPS successive approximation register (SAR) analog-to-digital converter with integrated 2.5 V reference, housed in a 48-lead LFCSP-VQ (7x7 mm) package with exposed pad. It accepts one unipolar input and provides both parallel and serial data interfaces, supporting industrial temperature operation from -40C to +125C. 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 DAC to digitize an analog input one bit at a time per conversion cycle. SAR ADCs are valued for low latency, deterministic behavior, and zero pipeline delay, placing them in the data-converter hierarchy between flash converters (fastest, lowest resolution) and delta-sigma ADCs (highest resolution, slower). The AD7666 sits within Analog Devices' PulSAR precision data-converter family. Key features of the AD7666ACPZRL include a 2.5 V internal reference with 3 ppm/C typical drift and 15 ppm/C guaranteed maximum drift, INL of +/-2.0 LSB max (+/-0.0038% of full scale), throughput of 500 kSPS, and support for both serial and 16-bit parallel digital outputs. The on-chip reference eliminates the need for an external reference IC, simplifying BOM and reducing board area in multi-channel systems. Architecture is based on a charge-redistribution CDAC, a high-bandwidth track-and-hold, and an internal precision reference. The part operates from a single 5 V analog supply, supports analog inputs of 0 to VREF, and offers flexible digital interfaces (parallel/serial) controlled by hardware pins. The exposed die-lath pad on the 48-LFCSP-VQ package provides a low-thermal-resistance path for high-throughput continuous conversion. Typical applications include industrial process control, data acquisition systems, medical instrumentation front-ends, and spectrum analyzer IF digitizers. The integrated reference and 16-bit true resolution make it well suited for precision measurement where DC accuracy and AC dynamic performance both matter. When designing with this device, follow Analog Devices' reference layout for the exposed die-lath. Place the input buffer amplifier close to the analog input pins, decouple AVDD and DVDD independently, and route the reference decoupling capacitor directly to the REFCAP pin to achieve datasheet INL performance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including data internal pin numbers and conversion-rate trade-offs versus pin-compatible peers.

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AD7674ACPZRL

AD7674ACPZRL - 18-Bit 800 kSPS SAR ADC | Analog Devices

The Analog Devices AD7674ACPZRL is an 18-bit, 800 kSPS, fully differential successive-approximation-register (SAR) analog-to-digital converter (ADC) housed in a 48-lead LFCSP (LFCSP-48, 7x7 mm with exposed pad) package and shipped on tape-and-reel. It operates from a single 5 V supply, offers ±VREF (5 V typical) differential input range, and delivers no pipeline delay thanks to its SAR architecture, with parallel or serial data interface options. A successive-approximation-register ADC is a precision data-conversion topology that performs a single conversion per cycle, returning the result immediately after each completed conversion rather than after a fixed pipeline latency. This makes SAR ADCs ideal for multiplexed data acquisition, motor control feedback, and any system that requires deterministic per-sample latency. The AD7674 family sits in the precision-industrial segment, above general-purpose 12/14-bit SAR ADCs but below high-speed pipeline ADCs, offering 18-bit resolution with 2.5 LSB INL at 800 kSPS. Key specifications include 18-bit resolution with no missing codes, ±VREF differential input range, throughput of 800 kSPS in Warp mode and 666 kSPS in normal mode, 2.5 LSB INL, and both parallel and serial digital interfaces. The device supports -40C to +85C industrial temperature range, single 5 V analog supply with 3 V or 5 V digital supply option, and an internal conversion clock. The LFCSP-48 package with exposed pad provides low thermal resistance for high-throughput industrial designs. The AD7674 uses a charge-redistribution DAC core with internal error-correction logic to achieve 2.5 LSB INL and guaranteed 18-bit no-missing-codes performance. The Warp mode allows the fastest throughput (800 kSPS) for AC signals where the converter is allowed to recycle after each conversion, while normal mode provides 666 kSPS with lower power. The differential input architecture rejects common-mode noise from industrial sensors and motor-drive environments. Typical applications include industrial process control, multichannel data acquisition systems, instrumentation, motor control current sensing, and medical imaging front ends. The combination of 18-bit resolution and SAR determinism makes it well suited to multiplexed systems that read multiple channels sequentially. When designing with the AD7674, ensure the reference voltage source has low noise and adequate drive strength, and keep analog and digital ground returns separated back at the exposed pad of the LFCSP-48. The Warp-mode throughput requires the input settling time to be met within one conversion cycle; use a low-impedance front-end buffer if driving from high-impedance sensors. This page consolidates distributor pricing, LFCSP-48 drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7675ACPZRL

AD7675ACPZRL - 16-Bit 100kSPS Differential SAR ADC | Analog Devices

The Analog Devices AD7675ACPZRL is a 16-bit, 100 kSPS, differential-input successive approximation register (SAR) analog-to-digital converter housed in a 48-lead LFCSP-VQ (7x7 mm) package with exposed pad, supplied on tape and reel. The part delivers ±2.5 V true bipolar differential input range from a single 5 V supply, integrates 16-bit resolution with no missing codes, and provides 1.5 LSB max INL (equivalent to 0.0015% of full scale). A SAR ADC is a precision converter that resolves a sampled analog voltage one bit per clock cycle using a binary-weighted capacitor network and a comparator, settling to its final code without pipeline latency. The AD7675 belongs to the broader ADC family -> data converters -> mixed-signal ICs -> semiconductors, and is targeted at precision multi-channel data-acquisition front ends where DC accuracy and AC linearity must coexist. Key features include 94 dB typical SNR at 45 kHz input, -110 dB typical THD at 45 kHz, both AC and DC specified performance, parallel (8-/16-bit) and serial 5 V/3 V logic interfaces, SPI-/QSPI-/MICROWIRE-/DSP-compatible serial modes, single 5 V analog supply operation, and 15 mW typical power dissipation at 100 kSPS. The LFCSP-48 exposed pad keeps thermal resistance low enough for the 15 mW dissipation without an external heat sink. The internal architecture combines a high-bandwidth differential track-and-hold, a precision 16-bit charge-redistribution SAR core, and an on-chip reference buffer. The lack of pipeline delay makes the part immediately usable in multiplexed systems, servo loops, and event-triggered sampling applications where latency must be deterministic. Typical applications include industrial process control and data acquisition, medical instrumentation, spectrum and vibration analysis, automated test equipment (ATE), and precision multi-channel instrumentation. The bipolar ±2.5 V input also simplifies direct connection to load-cell bridges and thermocouple front-ends after signal conditioning. When designing with this device, pair the analog supply with a 10 uF + 0.1 uF decoupling network placed within 5 mm of the AVDD pin, and solder the exposed pad to a continuous ground pour to achieve the rated thermal performance. Source-impedance should remain below 50 ohm to avoid degrading THD at the rated sample speed.

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AD7678ACPZRL

AD7678ACPZRL - 18-Bit 100kSPS SAR ADC | Analog Devices

The Analog Devices AD7678ACPZRL is an 18-bit, 100 kSPS successive-approximation (SAR) analog-to-digital converter (ADC) housed in a 48-lead LFCSP-VQ (7x7 mm) package with exposed pad. It features ±2.5 LSB INL (max), ±VREF differential input range (with VREF = 5 V), and a single 5 V analog supply that simplifies system power architecture. An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples continuous analog voltage signals and outputs discrete digital codes for downstream processors, FPGAs, or DSPs. SAR ADCs use a binary-search charge-redistribution architecture with a low-noise comparator and precision DAC array to resolve one bit per clock cycle; they offer deterministic, no-latency conversion with no pipeline delay, which makes them ideal for multiplexed channel acquisition, control loops, and precision instrumentation where signal fidelity must be preserved sample-by-sample. Key features of the AD7678ACPZRL include 18-bit resolution with no missing codes, throughput of 100 kSPS, support for both parallel and serial (SPI/QSPI/MICROWIRE-compatible) data interfaces, and integrated input protection. The device operates from a single 5 V analog supply (AVDD) plus a digital supply range that supports 5 V or 3 V logic (DVDD). An internal 2.5 V reference is available on-chip with the option to drive an external reference for higher accuracy. Typical applications include industrial process control (multi-channel data-acquisition boards, PLC analog front ends), precision medical instrumentation (patient monitoring, diagnostic analyzers), automatic test equipment (ATE) digitizers, and high-end instrumentation. Engineers also leverage the AD7678 family for spectroscopy, weigh scales, and precision sensor signal chains where 18-bit dynamic range, low distortion, and ac-accuracy guarantee reliable measurements. When designing with this ADC, allocate analog and digital supply decoupling as close to the pins as possible and provide a solid ground plane under the exposed pad for thermal dissipation. The serial interface mode reduces pin count, but for maximum throughput use the parallel interface to avoid serial-clock bottlenecks at full 100 kSPS. Always refer to the manufacturer datasheet for the full DC and AC timing specifications.

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AD7679ACPZRL

AD7679ACPZRL - 18-Bit 570kSPS SAR ADC | Analog Devices

The Analog Devices AD7679ACPZRL is an 18-bit, 570 kSPS successive-approximation-register (SAR) analog-to-digital converter housed in a 48-lead LFCSP-VQ (7x7) package. According to the Analog Devices AD7679 datasheet (Rev. B), the part delivers no-missing-code 18-bit resolution with an INL of ±2.5 LSB max, supports differential input ranges up to ±VREF (VREF = 5 V), and provides throughput up to 570 kSPS with zero pipeline delay. A SAR ADC is a successive-approximation analog-to-digital converter that uses a binary-search algorithm and a sample-and-hold front end to digitize an analog input one code at a time. Unlike pipelined or delta-sigma converters, SAR ADCs deliver a valid conversion result in a single conversion cycle without latency, making them ideal for multiplexed multi-channel data acquisition and control loops where deterministic response is required. The AD7679 sits in the precision ADC tier of the data-converter hierarchy (precision ADC → ADC → data converter → signal chain IC → semiconductor). Key features include 100 dB typical SNR at 2 kHz input with VREF = 5 V, selectable 18-/16-/8-bit parallel bus or serial 5 V/3 V SPI/QSPI/MICROWIRE/DSP-compatible interface, an on-board reference buffer, single 5 V supply operation, and a power dissipation of 76 mW at 500 kSPS dropping to 150 µW at 1 kSPS. The part is offered in both 48-lead LQFP and 48-lead LFCSP, with the LFCSP variant (ACP suffix) targeted at space-constrained designs. The ACPZRL suffix indicates tape-and-reel packaging and Pb-free compliance. The AD7679 architecture is pin-to-pin compatible with the AD7674, AD7676, and AD7678, providing a direct upgrade path within the PulSAR family. This pin compatibility allows designers to swap resolutions or sample rates on the same PCB footprint without layout changes, which is rare in the precision-ADC market. Typical applications include CT scanners, high-dynamic-range data acquisition systems, geophone and hydrophone sensor front ends, instrumentation, spectrum analysis, medical instruments, and as a low-power multichannel replacement for sigma-delta converters. When designing with the AD7679, place input and reference decoupling capacitors as close as possible to the analog and REF pins, and use the AD8021 (or equivalent low-noise, fast-settling op amp) as the front-end driver to preserve 18-bit settling at full throughput. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7679ASTZRL

AD7679ASTZRL - 18-Bit 570 kSPS SAR ADC | Analog Devices

The Analog Devices AD7679ASTZRL is an 18-bit, 570 kSPS successive-approximation-register (SAR) analog-to-digital converter in a 48-pin LQFP (7x7 mm) package, supplied on a 13-inch tape-and-reel. The part features differential ±VREF input range (VREF = 5 V), no pipeline delay thanks to its SAR architecture, and serial or parallel (18-/16-/8-bit bus) digital output. A SAR ADC is a type of data converter that performs a binary-search conversion on a held analog input, returning one bit per clock cycle with no latency. SAR ADCs sit within the broader data-acquisition hierarchy of data converters -> ADCs -> successive-approximation ADCs -> high-precision instrumentation ADCs, and are valued for their deterministic latency, excellent DC linearity, and zero pipeline-delay behavior compared to pipeline or delta-sigma architectures. Key features include 2.5 LSB maximum INL (no missing codes), 100 dB typical SNR at 2 kHz input (VREF = 5 V), on-chip reference buffer, and single 5 V supply operation. Power dissipation is 76 mW at 500 kSPS and scales down to 150 µW at 1 kSPS for low-duty-cycle acquisition. The AD7679 is a pin-to-pin compatible upgrade of the AD7674, AD7676, and AD7678, allowing direct performance upgrades on existing 48-LQFP boards. The part uses Analog Devices' PulSAR architecture with an internal conversion clock, internal reference buffer, and selectable serial or parallel interface. The 5 V/3 V interface is compatible with SPI, QSPI, MICROWIRE, and DSP hosts. The 48-LQFP variant supports both serial and parallel modes, while the 48-LFCSP variant is intended for space-constrained serial-mode designs. Typical applications include industrial process control loops, multichannel data-acquisition boards, medical instrumentation front ends, spectrum and vibration analysis, and any 18-bit precision measurement channel where deterministic SAR latency simplifies system-level synchronization. When designing, ensure the input driver amplifier settles to better than 18-bit accuracy within the acquisition window. The AD8021 is the typical choice; verify settling at 18-bit level rather than 0.1% because 18-bit settling is far more demanding. Decouple AVDD and DVDD separately and place the reference bypass capacitor close to the REF pin. This page synthesizes distributor pricing, pin-compatible alternatives within the PulSAR family, and PCB-level design notes not found in the standalone manufacturer datasheet.

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AD7680ARM

AD7680ARM - 16-Bit 100kSPS SAR ADC | Analog Devices

The Analog Devices AD7680ARM is a 16-bit, fast, low-power successive approximation register (SAR) analog-to-digital converter that operates from a single 2.5 V to 5.5 V supply and achieves throughput rates up to 100 kSPS in a 6-pin SOT-23 (MO-178AB) package. This ADC integrates a low-noise, wide-bandwidth track-and-hold amplifier, an internal conversion clock, and a versatile serial interface, making it well suited for compact, battery-powered designs. The 6-lead SOT-23 footprint occupies roughly 8 mm² of board area, dramatically smaller than the larger MSOP alternatives while still delivering true 16-bit performance. A SAR ADC is a type of analog-to-digital converter that performs a binary search through an internal capacitive DAC to determine each digital output code, one bit per conversion clock cycle. SAR ADCs are valued for low latency, deterministic behavior, and excellent DC accuracy. They sit under the broader hierarchy of ADC -> data converter -> signal chain IC -> semiconductor. The AD7680 specifically targets low-power, mid-speed instrumentation where successive-approximation precision outweighs the throughput needs of pipeline or flash converters. Key specifications include 16-bit resolution with no missing codes, 100 kSPS maximum throughput, ±5 V input range with single-supply operation from 2.5 V to 5.5 V, and typical power dissipation of 3 mW at 100 kSPS with a 2.5 V supply (rising to about 16.7 mW at 5 V). The serial interface is SPI/QSPI/MICROWIRE-compatible, allowing direct connection to most microcontrollers and DSPs without glue logic. The part offers ±0.4 LSB typical DNL, ±0.7 LSB typical INL, and an SNR of approximately 86 dB for high-quality signal acquisition. Architecturally, the AD7680 uses a charge-redistribution SAR core with an input bandwidth exceeding 1.5 MHz on the track-and-hold front end. The internal oscillator eliminates the need for an external clock source in most applications, and the power-down mode reduces consumption to microwatts between conversions, an essential feature for handheld instrumentation. The wide input bandwidth preserves signal integrity well beyond the Nyquist limit of the 100 kSPS sample rate, simplifying anti-aliasing filter design. Typical applications include portable data acquisition modules, weigh scales and load-cell digitizers, industrial process control loops, and battery-powered medical instrumentation such as patient monitors. The wide input range lets it digitize signals directly from 0 V to VDD without external signal conditioning in many single-ended configurations. For design success, place a 0.1 µF decoupling capacitor as close as possible to the AVDD pin and keep analog and digital grounds on separate planes joined at a single point beneath the device. Because the device offers no internal buffer on REF, a low-noise external reference such as the ADR291 is recommended when DC accuracy below 1 LSB matters. This page synthesizes distributor stock data, drop-in alternatives, and practical SOT-23 layout tips not collected in the datasheet alone.

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AD7680ARM-REEL

AD7680ARM-REEL - 16-Bit 100kSPS PulSAR ADC | Analog Devices

The Analog Devices AD7680ARM-REEL is a 16-bit, low-power successive-approximation (SAR) analog-to-digital converter that delivers up to 100 kSPS throughput from a single 2.5 V to 5.5 V supply, housed in an 8-lead MSOP package. It integrates a low-noise wide-bandwidth track-and-hold capable of handling input frequencies above 7 MHz, and offers typical power dissipation of 3 mW at 100 kSPS with a 2.5 V supply and 16.7 mW with a 5.5 V supply. An SAR ADC is a successive-approximation-register analog-to-digital converter, a subtype within the broader ADC category that performs bit-by-bit binary search conversion using an internal DAC and comparator. SAR ADCs occupy the middle of the converter hierarchy between flash converters (fastest, lowest resolution) and sigma-delta converters (slowest, highest resolution), offering an excellent balance of speed, resolution, and power. The AD7680 belongs to the PulSAR family from Analog Devices, which is positioned in the data converter > ADC > precision ADC > SAR ADC taxonomy and serves battery-powered and precision industrial systems. Key features include a SPI-/DSP-compatible serial interface, a -40C to +85C industrial operating range, single-ended analog input, and internal conversion clock. The -REEL suffix indicates Tape & Reel packaging for high-volume surface-mount assembly, while the base AD7680ARM denotes the MSOP-8 industrial-grade variant (the same silicon is also offered in a 6-lead SOT-23 as AD7680ART). Typical applications include portable instrumentation, battery-powered data acquisition, isolated sensor front ends, optical modules, and medical monitoring equipment. Its 16-bit no-missing-codes performance and 100 kSPS throughput make it well suited for multi-channel multiplexed systems where the small 8-MSOP footprint enables dense PCB layouts. When designing, ensure the reference voltage (REF) is well decoupled with a low-ESR ceramic cap and that the SCK idle-low mode is used for daisy-chain configurations. The digital I/O lines should be kept short to minimize coupling from the digital supply into the analog input.

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AD7680BRMZ-REEL

AD7680BRMZ-REEL - 16-Bit 100kSPS SAR ADC | Analog Devices

The Analog Devices AD7680BRMZ-REEL is a 16-bit, 100 kSPS, successive approximation register (SAR) analog-to-digital converter housed in an 8-pin MSOP package with an exposed thermal pad. It operates from a single 2.5 V to 5.5 V supply, supports pseudo-differential analog inputs with an input range of 0 V to VREF (where VREF is set between 2.5 V and 5.5 V), and achieves ±2 LSB INL (max) with no missing codes at 16 bits. Typical power dissipation is only 3 mW at 100 kSPS with 5 V supply and scales down to microwatts at lower throughputs, making this part a benchmark for low-power precision conversion. A SAR ADC is a converter architecture that performs a binary search through an internal capacitor DAC and comparator network to resolve the input voltage in N clock cycles for an N-bit result. Compared with delta-sigma and pipeline architectures, SAR ADCs combine true 16-bit no-latency sampling with low power consumption, which is why they dominate battery-powered instrumentation, data acquisition modules, and process-control front-ends. Within the converter hierarchy, the AD7680 occupies the SAR -> precision ADC -> data converter -> signal chain IC position. Key features of the AD7680 family include a wide-bandwidth, low-noise track-and-hold front end that handles input frequencies well in excess of the Nyquist rate, an internal conversion clock that eliminates the need for an external crystal, a high-speed serial interface compatible with SPI/QSPI/MICROWIRE/DSP, and a power-down mode that reduces consumption to nanowatt levels between conversions. The 8-MSOP exposed-pad package keeps the PCB footprint under 15 mm² while providing a thermal path to the ground plane. The device architecture pairs the SAR core with a precision reference input, allowing the system designer to use any low-drift external reference from 2.5 V to 5.5 V (including the ADR45xx family) to set the conversion scale. The serial output streams MSB-first, simplifying firmware on most microcontrollers. The part is specified over the −40 °C to +85 °C industrial temperature range. Typical applications include portable and battery-powered instrumentation, transducer/sensor signal conditioning, data acquisition systems, and process control loops where the combination of true 16-bit resolution, 100 kSPS throughput, and 3 mW dissipation is decisive. Designers appreciate the lack of pipeline latency, which simplifies single-shot and multiplexed front-end designs. When laying out the PCB, place the 0.1 µF decoupling capacitor as close as possible to the VDD pin and tie the exposed pad to a clean analog ground plane to minimize digital-coupling noise. Choosing an external reference with low broadband noise (such as ADR4525) preserves the ADC's effective resolution at very low input amplitudes. This page consolidates distributor pricing, drop-in 8-MSOP alternatives, and practical design notes for engineers evaluating the AD7680BRMZ-REEL against newer or competing ADC solutions.

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AD7682BCPZ

AD7682BCPZ - 16-Bit 4-Ch 250kSPS SAR ADC | Analog Devices

The AD7682BCPZ is a 16-bit, 4-channel, 250 kSPS successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a single power supply, VDD, and features a charge redistribution architecture with no missing codes. The device includes a 4-channel low crosstalk multiplexer that can be configured for unipolar single-ended, differential (GND sense), or pseudobipolar inputs, making it highly versatile for multichannel data acquisition systems. The AD7682BCPZ is housed in a 20-lead LFCSP (4x4 mm) package, offering a compact solution for space-constrained designs. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and excellent accuracy, making it ideal for applications such as industrial process control, medical instrumentation, and portable battery-powered devices. The AD7682BCPZ is part of the PulSAR family, which is recognized for its high performance and ease of use. Key features of the AD7682BCPZ include 16-bit resolution with no missing codes, a maximum sampling rate of 250 kSPS, and an internal low drift reference that can be selected at 2.5 V or 4.096 V. The device also offers a wide input voltage range, low power dissipation, and a flexible serial interface that is compatible with SPI, QSPI, MICROWIRE, and DSPs. The internal multiplexer allows the user to configure the inputs as single-ended, differential, or bipolar, providing design flexibility. The AD7682BCPZ uses a charge redistribution SAR architecture, which ensures high linearity and low noise. The device includes an internal reference buffer and a track-and-hold circuit, simplifying the external component count. The ADC operates from a 2.3 V to 5.5 V supply, and the digital interface can operate from 1.8 V to 5.5 V, allowing easy interfacing with low-voltage digital logic. The power dissipation is typically 12 mW at 250 kSPS, making it suitable for power-sensitive applications. Typical applications for the AD7682BCPZ include multichannel data acquisition systems, industrial process control, medical instrumentation, and battery-powered portable devices. Its high resolution and low power consumption make it ideal for precision measurement and monitoring systems. The device is also suitable for use in automotive and aerospace applications where reliability and accuracy are critical. When designing with the AD7682BCPZ, it is important to provide a clean, low-noise power supply and to place decoupling capacitors close to the VDD and REF pins. The reference input should be bypassed with a 10 uF capacitor to ensure stable operation. The serial interface should be configured for the appropriate clock speed and data format, and the conversion result can be read via the SDO pin. Proper PCB layout, including a solid ground plane and short traces, is essential to achieve the specified performance.

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AD7683ACPZRL

AD7683ACPZRL - 16-Bit 100kSPS PulSAR ADC | Analog Devices

The Analog Devices AD7683ACPZRL is a 16-bit, charge-redistribution, successive-approximation-register (SAR) analog-to-digital converter (ADC) that operates from a single 2.7V to 5.5V power supply and delivers up to 100 kSPS throughput in an 8-lead LFCSP-WD (3 mm × 3 mm) package with an exposed pad. The part contains a low-power, high-speed 16-bit sampling ADC with no missing codes (B-grade), an internal conversion clock, and a serial, SPI-compatible interface that also supports QSPI, MICROWIRE, and DSP serial interfaces. An analog-to-digital converter is a semiconductor device that converts a continuous-time, continuous-amplitude analog signal into a discrete-time, discrete-amplitude digital code. The PulSAR family from ADI uses charge-redistribution capacitor arrays and a successive-approximation register to perform bit-by-bit conversions, achieving a balance of low power consumption, high accuracy, and fast sampling. ADCs sit within the broader taxonomy of data converters -> mixed-signal ICs -> power management and signal chain semiconductors, and are typically used as the bridge between analog sensors and digital processors. Key specifications include 16-bit resolution with no missing codes, ±1 LSB typical (B-grade) integral nonlinearity (INL), a pseudo-differential analog input range of 0 V to VREF (where VREF can equal VDD up to 5.5 V), 100 kSPS sampling rate, and SPI/QSPI/MICROWIRE/DSP-compatible serial interface. The 8-lead LFCSP-WD with exposed pad provides low thermal resistance (~38 °C/W) suitable for compact industrial layouts. The AD7683 uses a charge-redistribution DAC array combined with a precision comparator and SAR logic; this architecture delivers excellent DC accuracy and low noise at low power (typically 1.5 mW at 100 kSPS with 3 V supply). Pseudo-differential input simplifies single-ended sensor signal conditioning while preserving good common-mode rejection. Typical applications include portable instrumentation, battery-powered data acquisition, industrial process control (4 mA to 20 mA loop digitization), precision weigh scales, and isolated sensor front-ends (with digital isolators such as ADuM1411). The wide supply range (2.7 V to 5.5 V) makes it compatible with both 3.3 V and 5 V MCUs. When designing with this device, place the 0.1 µF supply bypass capacitor within a few millimetres of the VDD pin and tie the exposed pad to a solid analog ground plane to minimize thermal resistance and digital switching noise coupling into the analog input. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes that complement the manufacturer datasheet and accelerate your selection process.

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AD7683BCPZ

AD7683BCPZ - 16-Bit 250kSPS PulSAR ADC | Analog Devices

The AD7683BCPZ is a 16-bit, charge redistribution, successive approximation, PulSAR analog-to-digital converter (ADC) from Analog Devices. It operates from a single power supply, VDD, between 2.7 V and 5.5 V, and features a low power, high speed, 16-bit sampling ADC with no missing codes (B grade), an internal conversion clock, and a serial, SPI-compatible interface port. The part also contains a low noise, wide bandwidth, short aperture delay, track-and-hold circuit. The AD7683BCPZ is available in an 8-lead LFCSP (CP-8-2) package, offering a compact solution for precision data acquisition systems. An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The AD7683 is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and excellent accuracy, making them ideal for applications such as industrial process control, medical instrumentation, and portable battery-powered devices. The AD7683 belongs to the PulSAR family of ADCs, which are renowned for their high performance and ease of use. Key features of the AD7683BCPZ include 16-bit resolution with no missing codes, a maximum sampling rate of 250 kSPS, and a typical power dissipation of only 12.5 mW at 5 V. The device offers a pseudo-differential analog input, an SPI-compatible serial interface, and a reference input that can be driven by an external reference. The AD7683 also includes a busy indicator and a power-down mode to conserve energy during idle periods. The AD7683 uses a charge redistribution architecture with an internal conversion clock, eliminating the need for an external clock. The track-and-hold circuit has a short aperture delay, ensuring accurate sampling of high-frequency signals. The device operates over the industrial temperature range of -40°C to +85°C and is available in a lead-free, RoHS-compliant package. Typical applications for the AD7683BCPZ include battery-powered instruments, data acquisition systems, industrial process control, medical devices, and portable electronics. Its low power consumption and small package make it suitable for space-constrained designs. The SPI-compatible interface simplifies connection to microcontrollers and DSPs. When designing with the AD7683, ensure that the reference voltage is stable and noise-free, as it directly affects conversion accuracy. Use a low-pass filter on the analog input to remove high-frequency noise, and place decoupling capacitors close to the VDD and REF pins. The device's power-down mode can be used to reduce power consumption between conversions.

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AD7683BCPZRL

AD7683BCPZRL - 16-Bit 100kSPS PulSAR ADC | Analog Devices

The Analog Devices AD7683BCPZRL is a 16-bit, 100 kSPS successive-approximation PulSAR analog-to-digital converter housed in an 8-lead LFCSP-WD (3x3 mm) package with an exposed thermal pad. According to the Analog Devices datasheet, the device operates from a single 2.7 V to 5.5 V supply and uses a charge-redistribution SAR architecture to deliver 16-bit resolution with no missing codes (B grade), typical INL of ±1 LSB, and a maximum INL of ·3 LSB across the full temperature range. A successive-approximation register (SAR) ADC is a precision data-converter type that compares the sampled input against an internal binary-weighted capacitor DAC one bit per conversion cycle. PulSAR is Analog Devices' proprietary name for its family of low-power, high-speed, charge-redistribution SAR ADCs. SAR ADCs sit within the broader data-converter family alongside delta-sigma ADCs and pipeline ADCs; they are favored where low-latency single-shot conversions, deterministic throughput, and excellent DC linearity are required. The AD7683BCPZRL integrates a low-noise, wide-bandwidth track-and-hold with short aperture delay, an internal conversion clock, and a serial SPI-compatible digital interface. A pseudo-differential analog input accepts a 0 V to VREF unipolar range, with VREF allowed up to VDD. The compact LFCSP-8 (3x3) footprint and SPI interface make the part a strong fit for channel-dense PCBAs that must keep board area, BOM count, and firmware complexity to a minimum. The device consumes only a few milliwatts at full throughput, enabling continuous 100 kSPS conversion without thermal concerns and supporting battery-powered portable instruments. Its pseudo-differential input and high-impedance sampling front end make the part resilient to source-impedance variation, simplifying analog front-end design for transducer, sensor, and process-control signal chains. Typical uses include industrial process control loop sensing, multichannel data-acquisition modules, portable medical instruments, weigh-scale and strain-gauge digitizers, and precision sensor readout. The +2.7 V to +5.5 V supply range maps directly onto common 3.3 V and 5 V rails, and the SPI port simplifies isolation in high-noise industrial systems. When designing with this ADC, observe the layout guidance in the Analog Devices datasheet: keep the analog signals on one side of the package and the digital signals on the other, use a solid ground plane beneath the part, and route digital traces away from the analog inputs to minimize digital-noise coupling into the sampled signal. This page synthesizes distributor pricing benchmarks, B-grade SAR pin-compatible alternatives, and practical PCB-layout guidance from the Analog Devices datasheet in one consolidated reference - information typically scattered across the manufacturer datasheet, distributor listings, and individual application notes.

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AD7684BCPZ

AD7684BCPZ - 16-Bit 100kSPS PulSAR ADC | Analog Devices

The AD7684BCPZ is a 16-bit, charge redistribution, successive approximation, PulSAR analog-to-digital converter (ADC) from Analog Devices. It operates from a single power supply, VDD, between 2.7 V and 5.5 V, and features a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a serial SPI-compatible interface. The device is available in a 20-lead LFCSP (4x4 mm) package, offering a compact solution for precision data acquisition systems. What is a successive approximation register (SAR) ADC? A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It typically consists of a comparator, a digital-to-analog converter (DAC), and a successive approximation register. SAR ADCs are known for their high speed, low power consumption, and excellent accuracy, making them ideal for applications such as industrial process control, medical instrumentation, and portable battery-powered devices. They are a subset of the broader ADC family, which also includes delta-sigma and pipeline converters, and are widely used in data acquisition systems. Key features of the AD7684BCPZ include a 16-bit resolution with no missing codes, a throughput of 100 kSPS, and a differential input. The device also features a low noise performance, with a typical SNR of 92 dB and a typical THD of -110 dB. It includes an internal conversion clock and a serial interface that is SPI-compatible, simplifying integration with microcontrollers and DSPs. The power consumption is typically 4.5 mW at 5 V and 2.5 mW at 2.7 V, making it suitable for power-sensitive applications. The AD7684BCPZ uses a charge redistribution architecture, which provides inherent sample-and-hold functionality and excellent linearity. The device includes a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies up to 45 kHz. The reference input is buffered, allowing the use of low-cost external references. The device also features a power-down mode that reduces current consumption to 1 uA, ideal for battery-powered systems. Typical applications for the AD7684BCPZ include battery-powered instrumentation, portable medical devices, data acquisition systems, and industrial process control. Its high accuracy and low power make it an excellent choice for applications where precision and energy efficiency are critical. When designing with the AD7684BCPZ, ensure that the reference voltage is stable and well-decoupled, as it directly affects the conversion accuracy. The analog input should be driven by a low-impedance source, and proper layout techniques should be used to minimize noise and parasitic capacitance.

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AD7685ARMZRL7

AD7685ARMZRL7 - 16-Bit 250 kSPS PulSAR ADC | Analog Devices

The Analog Devices AD7685ARMZRL7 is a 16-bit, 250 kSPS PulSAR successive approximation register (SAR) analog-to-digital converter with no missing codes, housed in a 10-lead MSOP (RM-10) package supplied on tape and reel. It operates from a single supply VDD of 2.3 V to 5.5 V and communicates over a SPI/MICROWIRE/QSPI/DSP-compatible serial interface. A SAR ADC is a type of analog-to-digital converter that successively approximates the input voltage using a binary search algorithm with a capacitive DAC. Within the signal-chain hierarchy, the AD7685 sits between the analog front end (amplifiers, filters, sensors) and the digital controller, converting real-world signals into 16-bit digital words for processing. PulSAR is Analog Devices' proprietary SAR architecture optimized for low power and high accuracy. Key features include 16-bit resolution with no missing codes, 250 kSPS maximum throughput, INL of +/-0.6 LSB typical and +/-2 LSB maximum, and a separate VIO logic supply compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic. The pseudo-differential input with wide common-mode range, together with the low-noise analog input lowpass filter formed by RIN and CIN, allows a noisier driver amplifier to still meet a given system noise specification. Technical depth: the AD7685 uses a charge-redistribution SAR core with an internal conversion clock, so no external clock is required for conversion. Its noise performance is lower than most other 16-bit ADCs per the Analog Devices datasheet, contributing to higher effective resolution in practical systems. Operation is specified from -40 C to +85 C. Typical applications include battery-powered portable instrumentation, industrial process control data acquisition, and medical monitoring equipment, where the 250 kSPS rate and low power consumption fit multi-channel scanning systems. Design consideration: the separate VIO pin lets you drop logic level to 1.8 V for modern microcontrollers, but keep the REF pin decoupled with low-ESR ceramics to preserve linearity. This page synthesizes distributor pricing, drop-in alternatives, pinout detail, and practical design notes not found in the manufacturer datasheet alone.

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AD7685BCPZ

AD7685BCPZ - 16-Bit 250kSPS PulSAR ADC | Analog Devices

The AD7685BCPZ is a 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, operating from a single 2.3 V to 5.5 V power supply. It achieves a throughput of 250 kSPS with no missing codes, making it ideal for high-precision data acquisition systems. The device is available in a compact 10-lead LFCSP-WD (3x3 mm) package, suitable for space-constrained designs. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It employs a charge redistribution capacitor array to perform the conversion, offering a balance of speed, resolution, and power consumption. SAR ADCs are widely used in applications requiring high accuracy and moderate sampling rates, such as industrial process control, medical instrumentation, and portable battery-powered devices. Key features of the AD7685BCPZ include 16-bit resolution with no missing codes, a 250 kSPS sampling rate, and a low power consumption of typically 3.5 mW at 5 V supply. The device also features a pseudo-differential input, an SPI-compatible serial interface, and a power-down mode for energy savings. The LFCSP package provides excellent thermal performance and a small footprint, enabling high-density PCB layouts. The AD7685 uses a charge redistribution architecture with an internal track-and-hold circuit, ensuring accurate sampling of the input signal. The device includes a precision reference input that can be driven by an external reference, allowing flexibility in system design. The SPI interface supports daisy-chaining of multiple ADCs, simplifying multi-channel data acquisition systems. Typical applications include battery-powered instrumentation, data acquisition systems, industrial process control, and medical devices. The AD7685's low power and high accuracy make it suitable for portable and remote sensing applications where power efficiency is critical. When designing with the AD7685BCPZ, ensure a clean analog supply and a stable reference voltage to achieve optimal performance. Proper PCB layout with adequate decoupling and grounding is essential to minimize noise and maximize SNR.

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AD7685CCPZ-R2

AD7685CCPZ-R2 - 16-Bit 250 kSPS SAR ADC | Analog Devices | LFCSP-10

The Analog Devices AD7685CCPZ-R2 is a 16-bit, 250 kSPS successive-approximation-register (SAR) analog-to-digital converter that operates from a single 2.3 V to 5.5 V supply, housed in a 10-pin LFCSP-WD (3x3) package with exposed die pad. According to the Analog Devices AD7685 datasheet, it integrates a low-power, high-speed 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile digital interface. A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a precision data converter architecture that resolves one bit per clock cycle by switching a charge-redistribution capacitor DAC against the input signal. The SAR architecture is the de-facto choice for applications requiring low latency, deterministic acquisition, and excellent DC accuracy at moderate sampling rates; it sits hierarchically under ADC -> data converter -> signal chain IC -> semiconductor. Compared to delta-sigma converters, SAR ADCs deliver faster settling with no digital decimation delay. Key features of the AD7685 include 16-bit resolution with no missing codes, true differential analog input, SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and a low 4 mW typical power dissipation at 250 kSPS with 5 V supply. The internal oscillator and reference buffer remove the need for external clock or buffer components, enabling compact BOM-precision or data acquisition front ends. The wide 2.3 V-5.5 V supply range supports both 3.3 V and 5 V system rails. Architecturally, the AD7685 uses a charge-redistribution switched-capacitor DAC core with inherent sample-and-hold, followed by a precision successive-approximation register and digital error correction. The LFCSP-WD-10 (3x3) package provides a thermal pad that must be soldered to the PCB ground plane to achieve the rated AC and DC performance, since the die pad is the primary thermal and electrical return. Typical applications include industrial process control (4-20 mA loop digitization), portable instrumentation and battery-powered data loggers, precision sensor signal conditioning, and medical monitoring front ends. When designing with the AD7685, ensure the exposed pad is soldered to a grounded copper pour of at least 10 mm^2; missing this connection degrades linearity. Use short, symmetric analog input traces and place the reference decoupling capacitor within 5 mm of the REF pin to preserve 16-bit performance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single-source reference for selecting the AD7685CCPZ-R2 in precision data-acquisition designs.

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الفئات الفرعية

المنتجات (38,000+)

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