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AD7799BRUZ - 24-Bit Sigma-Delta ADC with In-Amp | Analog Devices
AD7799BRUZ

AD7799BRUZ - 24-Bit Sigma-Delta ADC with In-Amp | Analog Devices

The AD7799BRUZ is a low power, low noise, complete analog front end for high precision measurement applications from Analog Devices. It integrates a 24-bit Sigma-Delta ADC with three differential analog inputs and an on-chip instrumentation amplifier, all in a compact 16-lead TSSOP package. The device operates from a 2.7V to 5.25V supply and features a programmable output data rate from 4.17 Hz to 470 Hz, making it ideal for precision sensor and industrial measurement systems. A Sigma-Delta ADC is an analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution, typically 16 to 24 bits, by trading speed for accuracy. It is the preferred choice for low-frequency, high-precision applications such as weigh scales, temperature sensors, and pressure transducers, where the signal bandwidth is narrow but the required resolution is high. The AD7799 belongs to the family of precision Sigma-Delta ADCs, which are essential building blocks in data acquisition systems, bridging the analog sensor world to the digital processing domain. Key features of the AD7799BRUZ include a low noise performance of 40 nV/√Hz, an on-chip low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator. The device also offers a programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, 16, 32, 64, and 128, allowing direct connection to low-level sensor outputs. The output data rate is software-programmable, and the device supports both external and internal references, providing flexibility in system design. Technically, the AD7799 uses a third-order Sigma-Delta modulator followed by a digital filter, achieving excellent noise performance and linearity. The on-chip in-amp allows direct interface to bridge sensors and thermocouples without external signal conditioning. The device includes a SPI-compatible serial interface for configuration and data readout, and it operates over the industrial temperature range of -40°C to +105°C. The TSSOP-16 package is ideal for space-constrained designs, and the device is RoHS compliant. Typical applications include weigh scales, strain gauge transducers, temperature measurement with RTDs and thermocouples, pressure sensors, and general precision data acquisition. The low power consumption of 500 µA makes it suitable for battery-powered and portable instruments. The AD7799BRUZ is a production part from Analog Devices, with a 1ku list price starting from $6.41 as of 2026-08-22. When designing with the AD7799BRUZ, ensure proper decoupling of the AVDD and DVDD supplies with 0.1 µF and 10 µF capacitors, and place the reference decoupling capacitor close to the REFIN pins. The on-chip PGA allows direct sensor connection, but care must be taken to avoid exceeding the common-mode input range. The SPI interface should be isolated from noisy digital lines to maintain the high resolution performance.

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AD779JD - 14-Bit 128 kSPS Complete ADC | Analog Devices
AD779JD

AD779JD - 14-Bit 128 kSPS Complete ADC | Analog Devices

The Analog Devices AD779JD is a complete 14-bit, 128 kSPS monolithic sampling analog-to-digital converter in a 28-pin ceramic DIP package. It integrates a sample-and-hold amplifier, microprocessor-compatible bus interface, 5 V voltage reference, and clock-generation circuitry. The AD779JD is designed for high-speed data acquisition and signal-processing systems requiring accurate conversion of bipolar or unipolar analog inputs. An ADC is a semiconductor that converts continuous analog voltage into a numerical digital value. The AD779 belongs to the sampling ADC category, where an internal sample-and-hold amplifier captures an input voltage before conversion. Within the broader hierarchy, it is a data-converter IC, interface IC, and signal-chain component that sits between analog sensors or conditioning circuits and a digital processor. The principal features include 14-bit resolution and a maximum sampling rate of 128 kSPS. Because the converter, reference, clock, and interface are combined on one monolithic device, the design can minimize external-component requirements and simplify acquisition systems. Analog Devices describes AC and DC performance for the K, B, and T grades, covering signal-to-noise-plus-distortion ratio, total harmonic distortion, and intermodular distortion considerations. The AD779 employs Analog Devices monolithic BiMOS technology, combining bipolar and MOS elements on one integrated circuit. This implementation supports long-term reliability compared with multichip or hybrid approaches. Versions compliant with MIL-STD-883 are available through the manufacturer’s military-product documentation, providing a route for applications requiring a qualified device variant. Typical uses include industrial process measurement, instrumentation, laboratory data acquisition, sensor-interface systems, and embedded control platforms. Its complete integration is particularly useful when a board designer needs a reference, acquisition front end, clock source, and digital interface without assembling each function from separate components. The processor-compatible bus simplifies connection to suitable embedded control logic. When laying out a circuit, place input and reference-related connections according to the pin-assignment and decoupling guidance in the manufacturer datasheet. Because this converter combines sensitive analog acquisition with digital signaling, keep analog traces away from noisy switching paths, provide a stable reference environment, and follow the recommended grounding arrangement. Confirm acquisition timing and overload limits against the selected AD779 grade. This product page consolidates the manufacturer specifications, package information, same-family replacement options, comparison parameters, and practical selection guidance. It is intended to help engineers identify whether the AD779JD’s 14-bit resolution, 128 kSPS throughput, monolithic integration, and 28-pin ceramic DIP construction fit a new acquisition or signal-processing design.

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AD779JN - 14-Bit 128 kSPS ADC | Analog Devices | Signal Processing
AD779JN

AD779JN - 14-Bit 128 kSPS ADC | Analog Devices | Signal Processing

The Analog Devices AD779JN is a single-channel, 14-bit monolithic analog-to-digital converter capable of 128 kSPS conversion and supplied in a 28-pin PDIP package. It integrates a sample-and-hold amplifier, microprocessor-compatible parallel bus interface, voltage reference, and clock-generation circuitry, providing a complete conversion solution for precision signal-processing systems. An ADC is an analog-to-digital converter, a semiconductor that samples a continuous analog voltage and converts it into a numeric value for processing, measurement, or control. In the product hierarchy, the AD779JN is a data-conversion IC and specifically a monolithic, successive-approximation-style sampling ADC. Its 14-bit conversion resolution provides 16,384 digital codes, making it suitable for instrumentation, industrial measurement, and signal-acquisition systems. The verified key specifications are 14-bit resolution, a maximum sampling rate of 128 kSPS, one input channel, and a 28-pin PDIP package. The integrated sample-and-hold amplifier supports acquisition of analog signals without requiring a separate external sample-and-hold stage. The microprocessor-compatible interface enables a host processor or controller to retrieve each conversion result. An internal voltage reference and clock-generation block also reduce the number of external supporting components required in a measurement circuit. The AD779 family is characterized for both dynamic and static signal-conversion performance. Dynamic specifications include signal-to-noise-plus-distortion ratio, total harmonic distortion, and intermodulation distortion, while static specifications address conversion accuracy and other DC behavior. According to the Analog Devices product information, the converter uses Analog Devices BiMOS monolithic technology, intended to provide the reliability advantage of a monolithic implementation over multichip or hybrid designs. Typical uses include industrial process monitoring, sensor-signal conditioning, laboratory data acquisition, audio and general signal processing, and microprocessor-controlled measurement systems. The 128 kSPS conversion rate is suitable for sampling bandwidths well below 64 kHz under ideal Nyquist conditions. Practical system bandwidth must also account for the input network, reference accuracy, digital-interface timing, and the acquisition characteristics specified in the manufacturer datasheet. Designers should follow the manufacturer’s recommended input, reference, decoupling, and digital-interface circuits rather than treating the ADC as an isolated block. Grounding, return-current control, and keeping analog and digital signal paths physically separated are important for preserving achievable conversion performance. The complete pinout, supply limits, input ranges, reference characteristics, and timing values should be confirmed in the Analog Devices datasheet before layout release. This page consolidates the verified AD779JN device identity, package, resolution, throughput, official documentation, distributor listings, family-grade alternatives, and practical engineering guidance. It also separates verified facts from parameters that still require datasheet confirmation, making it easier to compare the AD779JN without relying on incomplete distributor summaries.

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AD779KD - 14-Bit 128 kSPS Sampling ADC | Analog Devices
AD779KD

AD779KD - 14-Bit 128 kSPS Sampling ADC | Analog Devices

The Analog Devices AD779KD is a 14-bit, 128 kSPS complete sampling analog-to-digital converter housed in a 28-pin ceramic DIP (CDIP) package. It integrates a sample-hold amplifier (SHA), a precision 5 V voltage reference, clock generation circuitry, and a microprocessor-compatible bus interface on a single BiMOS monolithic die, providing a complete data-acquisition front end in one IC. The K-grade variant is specified for both AC (dynamic) and DC parameters, making it suitable for signal processing as well as precision measurement tasks. The 'D' suffix denotes the ceramic side-brazed CDIP-28 package rated for the extended industrial temperature range. A sampling ADC is a type of analog-to-digital converter that captures an instantaneous analog input through a front-end sample-and-hold stage before quantization, eliminating the need for an external track-and-hold and ensuring well-defined aperture timing at high input frequencies. Within the broader component hierarchy, the AD779KD belongs to successive-approximation register (SAR) ADCs > data converters > signal chain ICs > analog/mixed-signal semiconductors. Sampling ADCs bridge the analog sensor world and the digital processor, and are widely deployed wherever a clean, repeatable snapshot of a fast-moving analog waveform must be digitized into a 14-bit codeword. Key features include 14-bit resolution with no missing codes, an integrated 5 V reference, a throughput rate of 128 k samples per second, and monolithic BiMOS construction. The AD779 is available in AC- and DC-characterized K, B, and T grades, providing designers with parametric options for different accuracy budgets. MIL-STD-883-compliant versions are available for aerospace and defense designs. The architecture combines a fast input SHA that holds the analog signal during conversion with a SAR core, achieving low aperture uncertainty and consistent conversion timing. The internal reference removes one external component and improves overall gain temperature coefficient. Typical applications include precision industrial data acquisition, signal processing front ends, audio and vibration analysis, medical instrumentation, and military/aerospace digital signal processing subsystems. The CDIP-28 ceramic package supports extended-temperature and high-reliability environments. When designing with the AD779, observe the datasheet's analog and digital supply decoupling recommendations and respect the 128 kSPS throughput limit to avoid pipeline timing violations. Bypass both AVCC and DVCC pins with 0.1 microfarad ceramic capacitors placed as close to the package as possible. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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AD779KN - 14-Bit 128 kSPS Complete Sampling ADC | Analog Devices
AD779KN

AD779KN - 14-Bit 128 kSPS Complete Sampling ADC | Analog Devices

The Analog Devices AD779KN is a 14-bit, 128 kSPS complete sampling analog-to-digital converter in a 28-pin PDIP package. It combines a sample-and-hold amplifier, microprocessor-compatible bus interface, voltage reference, and clock-generation circuitry in one monolithic device. The converter supports both twos-complement data for bipolar operation and straight-binary data, making it suitable for precision measurement systems that need flexible input polarity and digital integration. The AD779KN is characterized for AC and DC performance in the K, B, and T grades, with a 128 kSPS conversion rate and 1 MHz full-power bandwidth. The signal bandwidth reaches 500 kHz, while the specified signal-to-noise-plus-distortion ratio is 80 dB for the K, B, and T grades. These characteristics place the device between general-purpose low-resolution converters and higher-cost precision ADCs where fast conversion, integrated references, and a complete measurement front end are useful. As a complete sampling ADC, the AD779KN integrates the major analog functions required for a measurement channel. The sample-and-hold amplifier captures the input before conversion, the internal voltage reference simplifies calibration, and the microprocessor-compatible interface allows the converter to be controlled by a microcontroller or embedded processor. Internal clock-generation circuitry reduces the number of external timing components required in a measurement instrument. Typical uses include industrial process-control loops, laboratory data-acquisition systems, precision weighing equipment, temperature and pressure measurement bridges, and portable instrumentation. The 128 kSPS throughput is useful when multiple analog channels must be scanned rapidly or when a control loop requires deterministic sampling. The 14-bit resolution provides 16,384 code levels, while the integrated reference and converter functions simplify analog front-end design. The AD779KN is not a universal replacement for every 14-bit ADC. System designers should verify input range, reference behavior, interface timing, power requirements, package dimensions, and acquisition timing against the manufacturer datasheet. The K-grade suffix and the 28-pin PDIP package are important ordering identifiers, and they should not be substituted with a merely similar converter without a complete footprint and timing review. This product page combines the manufacturer datasheet, product-page information, technical search references, and the identified family alternatives. It emphasizes verified function, sampling performance, package information, application fit, and the engineering checks required before a PCB or firmware change is approved.

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AD7811C - 10-Bit 350 kSPS 4-Channel ADC | Analog Devices
AD7811C

AD7811C - 10-Bit 350 kSPS 4-Channel ADC | Analog Devices

Analog Devices AD7811C is a 10-bit, 4-channel, successive-approximation analog-to-digital converter with a 350 kSPS conversion rate, 2.3 µs conversion time, and a single 2.7 V to 5.5 V supply in an unspecified package. The converter includes an on-chip track-and-hold amplifier and a 2.5 V on-chip reference. An ADC is an analog-to-digital converter, a mixed-signal semiconductor that converts continuous input voltages into numeric codes for processing, measurement, or control. The AD7811 belongs to the successive-approximation ADC family and provides a compact interface for systems requiring moderate resolution and relatively rapid sampling rather than the throughput or precision of high-end data converters. The AD7811C provides four single-ended inputs that can be configured as three pseudo-differential inputs referenced to a common point. They can also be configured as two independent pseudo-differential channels. This flexibility supports applications that need to monitor several analog signals, compare paired sensor outputs, or sample a mixture of common-referenced and independently sensed inputs without requiring four unrelated converter channels. Operation from a single 2.7 V to 5.5 V supply permits use in both low-voltage and 5 V systems. The integrated 2.5 V reference and track-and-hold amplifier reduce the number of external supporting functions, while the 10-bit resolution provides 1,024 possible digital codes. Because the verified product information does not state the complete electrical characteristics, input impedance, acquisition time, temperature range, or interface timing, those values require confirmation in the manufacturer datasheet before design release. Typical uses include industrial process monitoring, sensor-interface modules, battery-powered instrumentation, portable measurement equipment, and embedded control systems sampling multiple analog channels. The four-channel arrangement is particularly useful when several transducers or resistive sensors must be digitized within the same acquisition cycle. Designers should confirm the exact package, pinout, serial-interface timing, input range, and reference behavior from the AD7811 manufacturer documentation. Because only a limited set of verified characteristics is available, PCB footprint compatibility, source-impedance requirements, sampling dynamics, and operating-temperature suitability must not be assumed without further engineering verification. This page distinguishes documented AD7811C characteristics from unavailable parameters, records distributor references and freshness dates, and provides practical application guidance without presenting unverified specifications as facts.

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AD7811YRZ-REEL7 - 10-Bit 350kSPS 4-Ch SAR ADC | Analog Devices
AD7811YRZ-REEL7

AD7811YRZ-REEL7 - 10-Bit 350kSPS 4-Ch SAR ADC | Analog Devices

The Analog Devices AD7811YRZ-REEL7 is a 10-bit successive-approximation analog-to-digital converter (SAR ADC) sampling at up to 350 kSPS, offered in a 16-pin SOIC (SO-16 narrow body, 0.150 inch) package supplied on a 7-inch tape-and-reel. It operates from a single 2.7 V to 5.5 V supply, integrates a 2.3 µs successive-approximation core, on-chip track/hold amplifier, and an internal 2.5 V reference, and exposes a high-speed serial interface compatible with the serial ports of most DSPs. The device accepts up to four single-ended analog inputs that can be software-configured as three pseudo-differential inputs with respect to a common-mode point, and the input voltage range per channel is 0.0 V to 3.6 V with the internal reference. A successive-approximation ADC is a sampling converter that uses an internal binary-weighted capacitive DAC and a comparator to perform a bit-at-a-time conversion, combining small die area and very low power consumption with deterministic throughput. The AD7811 family sits at the lower end of the SAR performance spectrum: slower than 1 MSPS pipeline ADCs but with no pipeline latency, lower glitch, and excellent DC accuracy for instrumentation and process-control loops. In the broader signal-chain hierarchy it belongs to the data-converter IC class, which is itself a sub-category of mixed-signal ICs under power management and analog signal-chain products. The AD7811's on-chip reference removes a common external BOM line, while the flexible input MUX eliminates an external analog switch tree for low-channel-count designs. Key features include 2.3 µs conversion time, four analog input channels software-mapped to three pseudo-differential pairs, an internal 2.5 V reference with the option of an external reference override, a hardware/software conversion start input, and a software-controlled power-down mode. The serial interface supports daisy-chaining so two devices can share a single DSP serial bus by hard-wiring different device-address pins. Industrial-grade -40 °C to +105 °C operation is supported, making the part suitable for factory-floor embedded modules. In typical applications the AD7811 is used as a general-purpose 10-bit digitiser in process-control front ends, portable battery-powered instrumentation, DSP front-end digitisation, multi-zone temperature or sensor monitoring with external signal conditioning, and industrial data-acquisition boards. Because the part integrates both the reference and the track/hold, designers can shrink the analog front end to a small RC anti-alias filter and a few bypass capacitors. Design consideration: place a 0.1 µF ceramic bypass close to VDD and a 10 µF tantalum or ceramic bulk capacitor; keep analog and digital ground returns separated under the IC and join them only at the board's star-point ground. The internal reference settles in microseconds, but conversions started immediately after power-up may show 1-2 LSB extra offset until the reference settles, so issue a dummy conversion during firmware init.

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AD7812YNZ - 10-Bit 8-Ch 350kSPS SAR ADC | Analog Devices
AD7812YNZ

AD7812YNZ - 10-Bit 8-Ch 350kSPS SAR ADC | Analog Devices

The Analog Devices AD7812YNZ is a 10-bit, 8-channel, 350 kSPS successive-approximation analog-to-digital converter housed in a 20-pin PDIP (0.300 inch / 7.62 mm) package. It operates from a single 2.7 V to 5.5 V supply, integrates a 2.3 µs SAR ADC core, an on-chip track-and-hold amplifier, a 2.5 V on-chip reference (with external override option), and a high-speed serial interface compatible with DSPs and microcontrollers. An ADC (analog-to-digital converter) is a data-acquisition integrated circuit that converts real-world continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Successive-approximation-register (SAR) ADCs use a binary-search algorithm through an internal capacitive DAC to resolve one bit per clock cycle, achieving a balanced trade-off between speed, resolution, and power consumption. In the broader taxonomy, the AD7812YNZ is a SAR ADC, a sub-category of data converters (ADC/DAC), which sit inside the signal-chain IC family alongside amplifiers, filters, and references. Key specifications include 10-bit resolution, 350 kSPS throughput, 2.3 µs typical conversion time, 8 single-ended analog input channels (software-selectable via an on-chip mux), and a serial output interface. The internal 2.5 V reference is trimmed for low drift and can be overdriven by an external reference for higher-accuracy applications. Power dissipation is approximately 10 mW at full throughput, dropping to under 10 µW in power-down mode - ideal for battery-powered or multiplexed multi-channel systems. The AD7812YNZ implements a classic charge-redistribution SAR architecture with an input track-and-hold that supports signals well beyond the supply rails. Its serial interface is hardware-configurable for MSB-first or MSB-after-zero data framing, simplifying connection to industry-standard DSP serial ports as well as microcontroller SPI peripherals. Eight software-selectable input channels plus the wide analog input range make it well suited for industrial sensor arrays. Typical applications include data acquisition systems, industrial process control, portable and battery-powered instrumentation, multi-channel sensor monitoring, and DSP front-end signal chains. Designers should consult the AD7812/AD7811 datasheet for layout recommendations regarding the REFIN/REFOUT bypass network and the analog/digital ground partitioning. A practical design tip: decouple REFOUT with a 10 µF tantalum in parallel with a 0.1 µF ceramic to ensure reference stability and minimize conversion-noise coupling into the digital supply. This page synthesizes distributor pricing, drop-in DIP-20 alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a single reference for sourcing, replacement, and integration decisions on the AD7812YNZ.

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AD7813YRZ-REEL - 10-Bit 400 kSPS SAR ADC, 16-SOIC | Analog Devices
AD7813YRZ-REEL

AD7813YRZ-REEL - 10-Bit 400 kSPS SAR ADC, 16-SOIC | Analog Devices

The Analog Devices AD7813YRZ-REEL is a high-speed, microprocessor-compatible 10-bit successive approximation analog-to-digital converter (SAR ADC) with a maximum throughput of 400 kSPS, supplied on tape and reel in a 16-pin SOIC (R-16) package. It operates from a single 2.7 V to 5.5 V supply, integrates a 2.3 µs successive-approximation core, sample-and-hold front end, on-chip clock oscillator, and an 8-bit-wide parallel microprocessor interface that reduces external glue logic to a minimum. A successive-approximation ADC is a precision data-conversion architecture that uses an internal binary-weighted capacitor DAC and a comparator to resolve one bit per clock cycle. Within the broader converter taxonomy, a SAR ADC sits below pipelined and sigma-delta ADCs in raw sample-rate capability but above them in latency determinism: every conversion completes in a fixed number of cycles (here 10), making the AD7813 well suited to multiplexed data-acquisition systems and event-driven DSP sampling where predictable, low-latency conversion is more valuable than the highest possible throughput. Key electrical features include 400 kSPS maximum throughput, 2.7 V–5.5 V single-supply operation, an input range of 0 V to VREF (where VREF is the supply on the REF pin), low power consumption (typically around 10 mW at 5 V), and guaranteed operation over the -40 °C to +105 °C industrial temperature range. The 8-/10-bit software-selectable resolution adds flexibility when SNR requirements vary between channels. The on-chip clock oscillator eliminates the need for an external ADC clock, simplifying PCB layout in space-constrained designs. Typical applications include industrial process control front-ends, portable instrumentation and battery-powered data loggers, DSP front-end signal conditioning, motor control feedback loops, and multiplexed data-acquisition systems. The wide supply range makes the part directly compatible with both 3.3 V and 5 V microcontrollers without level translation. When designing the analog input path, place a small anti-alias RC filter (typically 100 Ω + 1 nF) ahead of the analog input pin and keep the digital return currents physically separated from the analog ground pour to preserve the converter's SNR.

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AD7820KPZ-REEL - 8-Bit 1.36µs Half-Flash ADC | Analog Devices
AD7820KPZ-REEL

AD7820KPZ-REEL - 8-Bit 1.36µs Half-Flash ADC | Analog Devices

The Analog Devices AD7820KPZ-REEL is a high-speed, microprocessor-compatible 8-bit analog-to-digital converter (ADC) that uses a half-flash conversion technique to achieve a conversion time of 1.36 µs, supplied on a 20-lead PLCC (9x9 mm) surface-mount package. The device operates from a single +5 V supply with an analog input range of 0 V to +5 V, draws a maximum supply current of 15 mA, and dissipates a typical 75 mW of power. The on-chip track-and-hold eliminates the requirement for an external sample-and-hold amplifier for input signals with slew rates below 100 mV/µs, simplifying front-end design and reducing BOM cost. An ADC (Analog-to-Digital Converter) is a data-acquisition integrated circuit that converts a continuous analog voltage into a discrete digital code word. The half-flash (or sub-ranging flash) architecture employed here uses 31 comparators combined with a most-significant 4-bit ADC and a least-significant 4-bit ADC, balancing speed and silicon area: it is faster than successive-approximation converters at the time but uses fewer comparators than a full-flash design. ADCs sit within the data-converter hierarchy of mixed-signal ICs, downstream of sensor signal-conditioning stages and upstream of microprocessors, DSPs, or FPGAs. Key features of the AD7820 include a parallel digital output interface, single +5 V operation, internal track-and-hold, half-flash conversion at 1.36 µs, and a maximum power dissipation of 450 mW. The device is fabricated on Analog Devices' advanced Linear-Compatible CMOS (LC2MOS) process, which combines bipolar analog precision with CMOS digital density on the same die. The 8-bit resolution delivers 256 discrete output codes with a quantization step of approximately 19.5 mV across the 0-5 V input range, sufficient for general-purpose instrumentation and digital control loops. Typical applications include industrial process control, portable data loggers, battery-powered instrumentation, display driving, and high-speed sampling in microprocessor-based data-acquisition systems. The 20-pin PLCC (Plastic Leaded Chip Carrier) provides robust mechanical and thermal characteristics for surface-mount assembly. When designing with the AD7820, ensure the analog input source can drive the ADC's switched-capacitor input stage; adding a low-impedance buffer amplifier (such as an AD8031 or AD845) in front of the analog input is recommended when sampling high-impedance sources or when full-scale step settling is required. This page synthesizes distributor pricing, drop-in alternative guidance, and practical design notes that are not found directly in the manufacturer datasheet.

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AD7825BRZ-REEL7 - 8-Bit 2 MSPS 4-Ch ADC | Analog Devices
AD7825BRZ-REEL7

AD7825BRZ-REEL7 - 8-Bit 2 MSPS 4-Ch ADC | Analog Devices

The Analog Devices AD7825BRZ-REEL7 is an 8-bit, 2 MSPS, 4-channel half-flash analog-to-digital converter (ADC) housed in a 24-pin SOIC wide-body package and supplied on a 7-inch tape-and-reel reel. The ADC integrates an on-chip 2.5 V reference (2% tolerance), a track-and-hold amplifier, and a high-speed parallel microprocessor-compatible interface, with a worst-case conversion time of 420 ns per channel. The converter operates from a single 3 V or 5 V supply and supports four single-ended analog input channels multiplexed to a single conversion core. The wide SOIC-24 package simplifies layout on standard through-hole and mixed-technology boards while still exposing the full AD7825 functional pinout. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog voltage on a periodic clock and quantizes it into a discrete binary digital output. The half-flash (or sub-ranging) topology uses two comparator banks and a coarse/fine conversion cycle to deliver higher throughput than a pure flash architecture while costing less silicon area. Within the broader hierarchy, the AD7825BRZ-REEL7 is a successive-approximation-style pipeline ADC -> data converter -> mixed-signal IC -> semiconductor, designed for moderate-resolution, high-speed acquisition rather than for high-precision instrumentation. Key features of this ADC include 8-bit resolution, 2 MSPS maximum throughput (1 MSPS guaranteed over temperature), a 420 ns conversion time, an internal 2.5 V reference, a dedicated track-and-hold amplifier, four single-ended input channels, an automatic power-down mode activated through the CONVST pin, and a parallel digital interface. SNR is specified in the Analog Devices datasheet, and offset adjust is available for system-level calibration. Operating temperature is -40C to +85C industrial grade. The combination of wide input bandwidth, integrated reference, and on-chip mux makes the AD7825BRZ-REEL7 well suited for multi-channel data acquisition systems that must remain responsive under burst sampling. The architecture is a half-flash ADC with two flash blocks sharing a single DAC chain. The on-chip reference reduces external component count and the track-and-hold amplifier eliminates the need for an external sample-and-hold. The CONVST pin both starts a conversion and triggers automatic power-down at the end of the cycle, allowing the part to drop to a low quiescent state between bursts and lowering average power in polled applications. Typical applications include industrial process control and multi-zone data acquisition, motor control feedback loops, portable instrumentation, automotive sensor clusters (non-safety), battery monitoring systems, and embedded data loggers. Designers should also consider this ADC for any 5 V system where 8-bit resolution and 2 MSPS are sufficient, particularly when an internal reference is desired to minimize PCB area and BOM cost. Choose the -REEL7 reel pack for high-volume surface-mount assembly; for engineering prototypes the AD7825BRZ tube variant is preferred. When designing with this ADC, place 0.1 uF decoupling capacitors as close as possible to the AVDD and DVDD pins, and keep analog input traces short and guarded to minimize coupling. Note that the wide-body 24-SOIC footprint is larger than the TSSOP variant (AD7825BRU) and the two packages are NOT pin-compatible; verify your PCB land pattern matches the SOIC-24 outline before substituting. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the AD7825BRZ-REEL7 that are not consolidated in any single manufacturer datasheet or distributor listing.

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AD7827BRZ - 8-Bit 1 MSPS Serial ADC | Analog Devices
AD7827BRZ

AD7827BRZ - 8-Bit 1 MSPS Serial ADC | Analog Devices

The Analog Devices AD7827BRZ is an 8-bit, 1 MSPS, single-channel, low-power analog-to-digital converter that operates from a single 3 V or 5 V supply, housed in an 8-pin SOIC (R-8) package. It integrates a track-and-hold amplifier, an on-chip 2.5 V reference with 2% tolerance, a 420 ns half-flash ADC core, and a high-speed serial interface compatible with most DSP serial ports, making it a complete one-chip data acquisition front-end for embedded systems. What is an ADC? An analog-to-digital converter (ADC) is a semiconductor device that samples a continuous-time, continuous-amplitude analog input voltage and produces a discrete digital code representing that voltage at each sample instant. Successive-approximation-register (SAR), flash, half-flash, and sigma-delta architectures cover the major speed/resolution trade-offs; the AD7827's half-flash architecture is a two-step flash variant that halves the comparator count versus a true flash converter while preserving sub-microsecond conversion time, placing it in the high-speed, moderate-resolution niche between pure flash ADCs and SAR ADCs. Within the broader hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. Key differentiating specifications: a 1 MSPS maximum throughput rate, a 420 ns conversion time, a 200 ns acquisition time, and the integrated 2.5 V reference eliminate the need for an external reference component. The serial digital interface reduces pin count versus parallel-output ADCs and simplifies isolation in noisy environments. The half-flash architecture splits the 8-bit conversion into two 4-bit flash passes with a coarse-fine residue, which keeps power consumption low while sustaining 1 MSPS throughput. The on-chip reference, track-and-hold, and serial interface shrink the external BOM to a handful of decoupling capacitors and an input RC network, enabling compact mixed-signal designs. Typical applications include DSP-based motor control and digital servo loops, industrial process control front ends, optical and inkjet printer data acquisition, and portable instrumentation where a 3 V supply rail is mandatory. Any signal chain requiring a fast, low-power, single-supply ADC with DSP-friendly serial output fits the AD7827 family. When designing with the AD7827BRZ, observe the analog-input bandwidth limit (the half-flash architecture relies on the input settling within the 200 ns acquisition window) and provide a low-impedance input buffer to avoid aperture-related distortion. Bypass VDD with at least a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin to keep the internal reference stable. This page synthesizes distributor pricing, drop-in compatible ADC equivalents, and practical layout guidance for the AD7827BRZ alongside verified content from the Analog Devices AD7827 datasheet, supporting sourcing decisions for engineers designing 3 V / 5 V mixed-signal systems.

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AD7827BRZ-REEL - 8-Bit 1MSPS Serial ADC w/ 2.5V Ref | Analog Devices
AD7827BRZ-REEL

AD7827BRZ-REEL - 8-Bit 1MSPS Serial ADC w/ 2.5V Ref | Analog Devices

The Analog Devices AD7827BRZ-REEL is a high-speed, single-channel, low-power 8-bit analog-to-digital converter (ADC) with a maximum throughput of 1 MSPS, supplied on tape and reel in an 8-pin SOIC (BRZ) package. It integrates a track-and-hold amplifier, a 420 ns half-flash ADC core, and an on-chip 2.5 V reference (2% tolerance), allowing operation from a single 3 V or 5 V supply. The serial data interface is compatible with the serial ports of most DSPs and microcontrollers, enabling direct connection without glue logic. The device combines Convert Start and Power Down control at a single pin (CONVST), letting the host strobe conversions and place the ADC in a low-power state between samples to conserve energy in duty-cycled applications. An analog-to-digital converter is an integrated circuit that converts a continuous-time, continuous-amplitude analog signal into a discrete-time, discrete-amplitude digital representation suitable for processing by microcontrollers, DSPs, or FPGAs. ADCs sit at the boundary between the analog and digital domains within a mixed-signal data acquisition signal chain: sensor -> signal conditioning -> ADC -> processor. By category, the AD7827BRZ-REEL belongs to successive-approximation/half-flash ADCs, which in turn fall under the broader data-converter family, and the wider analog and mixed-signal IC category, ultimately within power management and signal chain semiconductors. Key differentiators include 1 MSPS guaranteed throughput, 200 ns acquisition time, an integrated reference that eliminates external components, and extremely low power consumption when powered down between conversions. The serial interface minimizes pin count and simplifies PCB routing in space-constrained designs. Architecturally, the half-flash topology uses two parallel 4-bit flash sub-ADCs and an internal DAC to deliver an 8-bit result in just 420 ns, doubling the speed of a basic successive-approximation register (SAR) ADC while maintaining low power. Compared with full-flash 8-bit converters, the half-flash design reduces comparator count, die area, and power dissipation. Typical applications include data acquisition systems, system monitoring and metering, portable or battery-powered instrumentation, optical modules, and DSP front-end signal conditioning. The wide 3 V to 5 V supply range supports both legacy 5 V microcontroller systems and modern low-voltage 3.3 V designs. When designing with this part, place a 0.1 uF decoupling capacitor close to the AVDD pin and follow Analog Devices' recommended PCB layout for high-speed sampling converters to minimize kickback noise and maintain linearity. The CONVST pin doubles as the power-down control, so gate it with the host's general-purpose I/O after configuring the serial clock. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer datasheet for fast engineering evaluation. (Supplying the AD7827 datasheet PDF on Analog's product page provides the authoritative specification set.)

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AD7827BRZ-REEL7 - 8-Bit 1MSPS Serial ADC | Analog Devices
AD7827BRZ-REEL7

AD7827BRZ-REEL7 - 8-Bit 1MSPS Serial ADC | Analog Devices

The Analog Devices AD7827BRZ-REEL7 is an 8-bit, 1 MSPS, low-power analog-to-digital converter with a serial interface, supplied in an 8-lead SOIC package and shipped on a 7-inch (178 mm) tape-and-reel reel. It operates from a single 3 V or 5 V supply and integrates a track-and-hold amplifier, a 420 ns half-flash ADC core, and an on-chip 2.5 V reference with 2% tolerance. The device combines the Convert-Start and Power-Down functions on a single CONVST pin, simplifying the digital control interface for host DSPs and microcontrollers. An ADC (analog-to-digital converter) is a data-conversion IC that samples continuous analog voltages and outputs discrete digital codes. The AD7827 is a successive-approximation-style half-flash ADC, sitting in the hierarchy: half-flash ADC -> successive-approximation ADC -> analog-to-digital converter -> data converter -> signal-chain IC -> semiconductor. Its on-chip reference and serial output minimize external component count, making it suitable for compact, mixed-signal designs. Key features include a maximum throughput of 1 MSPS, a 420 ns conversion time, a 200 ns acquisition time, a serial interface compatible with most DSPs and microcontrollers, and a hardware power-down mode controlled via the CONVST pin. The half-flash architecture provides two flash blocks clocked on opposite phases, halving the comparator count and power consumption compared with a full-flash ADC of equivalent speed. Typical applications include high-speed data acquisition front-ends, DSP-based instrumentation, automatic test equipment (ATE) digitizers, and process-control I/O modules. The wide supply range (3 V or 5 V) and serial interface also suit it for battery-powered portable measurement devices where PCB area and quiescent current are constrained. When designing with the AD7827BRZ-REEL7, pay close attention to analog input bandwidth and source-impedance settling. A small external RC at AIN usually improves performance, and the on-chip 2.5 V reference must be bypassed with at least 1 nF to keep noise low. The CONVST pin doubles as the power-down strobe; an idle pulse width longer than the power-down timeout must be avoided to keep the part in the active state. This page consolidates current distributor pricing, pin-for-pin compatible alternatives, and practical PCB design notes that supplement the Analog Devices AD7827 datasheet, giving procurement and design teams a single reference for evaluation, drop-in replacement sourcing, and board bring-up.

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AD7828KPZ-REEL - 8-Bit 8-Channel 2.5µs ADC | Analog Devices
AD7828KPZ-REEL

AD7828KPZ-REEL - 8-Bit 8-Channel 2.5µs ADC | Analog Devices

The Analog Devices AD7828KPZ-REEL is an 8-bit, 8-channel, half-flash analog-to-digital converter (ADC) housed in a 28-pin PLCC (J-Lead) package rated for the commercial 0°C to 70°C operating range. It digitizes up to 8 single-ended analog inputs through an internal analog MUX, achieving a conversion time of 2.5 µs per channel and supporting input signal bandwidth up to 10 kHz on every channel through a built-in track-and-hold amplifier. The converter communicates with microprocessors through a parallel interface, operates from a single 5 V supply, and dissipates a typical 40 mW of power using Analog Devices' LC²MOS linear-compatible CMOS process. An 8-bit ADC is a successive-approximation or flash-type data converter that quantizes an analog input voltage into 256 discrete digital codes with 8-bit resolution (≈39 mV per LSB on a 5 V full-scale input). Multichannel ADCs like the AD7828 integrate an input multiplexer, sample-and-hold, and reference buffer on-chip, allowing a single converter IC to monitor multiple sensors or process signals, reducing BOM cost and PCB area compared with one ADC per channel. In the broader signal-chain hierarchy, the ADC sits between the analog front end (sensor + amplifier + filter) and the digital domain (microcontroller, DSP, or FPGA), making its speed, channel count, and interface protocol the key selection criteria. Key differentiating features of the AD7828 include the on-chip 8-input multiplexer with channel selection logic, built-in track-and-hold for 10 kHz full-scale signals, a fast microprocessor-compatible parallel interface, single 5 V operation, and the half-flash conversion architecture that delivers 2.5 µs conversion time without the die-area penalty of a full 8-bit flash design. The LC²MOS process ensures low power dissipation and high noise immunity for industrial and instrumentation front ends. The half-flash (also called subranging or pipelined 2-step) architecture uses two 4-bit flash ADCs plus a DAC and subtractor to first resolve the 4 MSBs, then the 4 LSBs, halving the comparator count versus a full 8-bit flash converter. Combined with on-chip clock and reference circuitry, this yields a small die, low power, and 2.5 µs conversion without the latency of a SAR converter. Typical applications include multiplexed data acquisition systems, industrial process control front ends, portable instrumentation, multichannel sensor monitoring, and any 8-bit embedded system that requires rapid sampling of multiple analog signals through a parallel bus. The wide 0°C to 70°C operating range makes it well suited to commercial and laboratory environments rather than full industrial (-40°C to +85°C) deployments. When designing with the AD7828, route the analog inputs as short as possible and isolate them from digital return currents to preserve converter accuracy. Use the BYPASS pin with the recommended 10 µF/0.1 µF decoupling pair, hold RD high during startup to keep the output bus inactive, and verify that the parallel-mode timing matches your host microprocessor or DSP read-cycle specification.

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AD7828LPZ-REEL - 8-Bit 8-Ch 50kSPS Half-Flash ADC | Analog Devices
AD7828LPZ-REEL

AD7828LPZ-REEL - 8-Bit 8-Ch 50kSPS Half-Flash ADC | Analog Devices

The Analog Devices AD7828LPZ-REEL is an 8-bit, 8-channel, half-flash analog-to-digital converter (ADC) housed in a 28-pin PLCC (J-Lead) package, sampling up to 50 kSPS per channel with a 2.5 µs conversion time. According to the Analog Devices AD7828 datasheet, the part operates from a single +5 V supply, accepts an analog input range of 0 V to +5 V when using an external +5 V reference, and integrates an on-chip track-and-hold capable of digitizing full-scale signals up to 10 kHz (157 mV/µs slew rate) on every channel. The half-flash (two-step) architecture halves the silicon area and power compared with a full-flash converter while still delivering per-channel conversion rates suitable for multiplexed data-acquisition front ends. A half-flash ADC is a multi-step flash converter that performs a coarse conversion, generates a DAC residue, then performs a second flash conversion on the residue; the two results are combined digitally to produce the final code. Within the broader hierarchy, half-flash ADCs sit between successive-approximation (SAR) converters and full-flash converters - faster than typical SAR ADCs of equivalent resolution but slower than full-flash, at lower cost and lower power. ADCs of this class are widely used as the analog front end of microcomputer-based instrumentation where multiple sensors must be scanned and digitized with deterministic latency. Key features of the AD7828LPZ-REEL include 8 multiplexed analog input channels, a built-in track-and-hold, a parallel microprocessor interface using standard CS and RD signals, a single +5 V supply, and typical power dissipation of 40 mW to 50 mW. The device is fabricated in an advanced, all ion-implanted Linear-Compatible CMOS (LC²MOS) process that combines bipolar analog precision with CMOS digital logic on a single die. Typical applications include multi-channel data-acquisition systems, process-control front ends, industrial instrumentation, point-of-sale terminals, and any embedded system requiring simultaneous sampling of multiple analog sensors through a single ADC. The parallel interface makes the part especially easy to drop into 8051-, 68HC11-, and 80C196-style microcontroller buses without glue logic. When designing with the AD7828, note that the analog input range is 0 V to VREF (with VREF tied to VDD for a 0-5 V range), so input signals that swing below ground or above the reference require a level-shift network. Decouple VDD with a 0.1 µF ceramic in parallel with a 10 µF tantalum placed within 1 cm of the supply pin to suppress the digital switching transients that can couple into the analog input. The REEL suffix denotes Tape & Reel packaging for high-volume SMT assembly. This page synthesizes distributor pricing, drop-in cross-references from the AD7828 family, and practical design notes that go beyond the manufacturer datasheet to help you decide whether the AD7828LPZ-REEL is the right 8-bit multi-channel ADC for your design.

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AD7829BRU-REEL - 8-Bit 2MSPS 8-Ch ADC, 28-TSSOP | Analog Devices
AD7829BRU-REEL

AD7829BRU-REEL - 8-Bit 2MSPS 8-Ch ADC, 28-TSSOP | Analog Devices

The Analog Devices AD7829BRU-REEL is a high-speed, 8-bit, 8-channel analog-to-digital converter with a maximum throughput of 2 MSPS, housed in a 28-pin TSSOP package supplied on a 13-inch reel. The part combines an on-chip 2.5 V reference (2% tolerance), a track-and-hold amplifier, a 420 ns half-flash ADC core, and a high-speed parallel microprocessor-compatible interface on a single die, making it a complete data-acquisition front-end for cost-sensitive embedded designs. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that quantizes a continuous analog voltage into a discrete digital code. The AD7829 belongs to the successive-approximation / half-flash half-flash ADC family, which splits an 8-bit conversion into two 4-bit flash passes, balancing speed and silicon area. Within the broader product hierarchy, the AD7829 sits in the data-converter -> ADC -> successive-approximation / half-flash branch of the signal-chain IC taxonomy. Key features include 8 single-ended analog input channels with channel-selection logic, automatic power-down at the end of conversion (CONVST pin combines convert-start and power-down for low standby current), operation from a single 3 V +/-10% or 5 V +/-10% supply, and an on-chip reference that eliminates external reference cost. The half-flash architecture delivers 420 ns conversion time per channel, supporting aggregate throughput up to 2 MSPS when channels are scanned sequentially. The device accepts a wide analog input range (0 V to VREF for unipolar single-ended inputs) and presents results on a parallel 8-bit data bus with standard CS and RD strobes. The TSSOP-28 footprint occupies approximately 9.7 mm x 4.4 mm, allowing dense PCB layouts. The -REEL suffix indicates the device ships in Tape & Reel packaging for high-volume SMT assembly. Typical applications include portable instrumentation, data-acquisition front-ends for industrial PLCs, multi-channel sensor arrays, scan-based measurement systems, and embedded processor monitors. The automatic power-down feature makes the AD7829 particularly attractive for battery-powered designs where quiescent current matters between conversions. When designing with this part, observe the analog and digital grounding scheme shown in the datasheet: tie AGND and DGND together at one low-impedance point near the ADC, and decouple VDD and VDRV separately. The on-chip reference requires a 0.1 uF ceramic bypass close to the REFIN/REFOUT pin to keep conversion noise low.

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AD7851KN - 14-Bit 333 kSPS Serial ADC | Analog Devices
AD7851KN

AD7851KN - 14-Bit 333 kSPS Serial ADC | Analog Devices

The Analog Devices AD7851KN is a 14-bit, 333 kSPS successive-approximation serial sampling analog-to-digital converter that operates from a single 5 V supply and is packaged in a 24-pin PDIP (N-24) through-hole plastic DIP. The K-grade device is specified for 285 kSPS throughput with 1 LSB maximum DNL and is guaranteed to operate up to 125 C, making it suitable for industrial temperature environments. A successive-approximation register (SAR) ADC is a sampling converter that performs a binary search on the input voltage using an internal DAC and comparator; SAR ADCs are valued for deterministic latency, low-latency single-shot conversion, and inherent ease of single-supply operation. Within the converter/ADC product family, the AD7851KN sits at the integration level that sits below integrated microcontrollers with ADC peripherals but above discrete op-amp+counter sample-and-hold designs, occupying the middle of the data-acquisition signal chain where predictable timing and serial interfacing outweigh the need for very-high channel counts. Key features include a pseudo-differential analog input with two programmable input ranges (0 V to VREF and 0 V to 2 x VREF, with unipolar coding only), built-in self-calibration and system-calibration modes for accuracy over time and temperature, multiple power-down options for low-power applications, and a serial interface compatible with most microcontrollers and DSPs via the active-low CONVST and serial-data framing. The K-grade models are guaranteed to retain 1 LSB DNL at the 285 kSPS rate across the full -40 C to +125 C automotive-industrial range. The device architecture uses a capacitive charge-redistribution DAC in the SAR loop, with auto-calibration of offset and gain on demand; this corrects drift introduced by the internal reference buffer and the comparator over temperature. Conversion is initiated by the falling edge of CONVST, and data is clocked out on a single DOUT line with synchronous SCLK, reducing isolated-system wiring to three lines. The pseudo-differential input rejects common-mode noise on the DC input and is well suited for ratiometric measurements using an external reference and a transducer bridge. Typical applications include industrial process-control analog input modules, multi-channel data-acquisition front ends, motor-control current and voltage sensing loops, instrumentation transducer signal conditioning, and legacy upgrade paths in systems designed around the original AD7851. The serial interface and small footprint also support portable data loggers and battery-powered test equipment where board area and power budget are constrained. When designing with this part, provide a low-impedance reference of 2.5 V or 5 V at the REF pin through a 10 uF decoupling capacitor, and maintain a quiet analog ground to avoid coupling digital SCLK edges into the conversion result. The self-calibration routine should be issued at power-on and after any large temperature change to retain the 1 LSB DNL guarantee; without calibration, gain error can drift by several LSBs across the -40 C to +125 C range. This page synthesizes the ADI datasheet specifications, current distributor stock from Octopart and Infinity-Semiconductor, and a Same-Brand Same-Family drop-in alternative set useful for designers migrating from end-of-life AD7851 builds to other 14-bit SAR ADCs.

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AD7853LBRZ-REEL - 12-Bit 100kSPS SAR ADC | Analog Devices
AD7853LBRZ-REEL

AD7853LBRZ-REEL - 12-Bit 100kSPS SAR ADC | Analog Devices

The Analog Devices AD7853LBRZ-REEL is a 12-bit, 100 kSPS successive-approximation analog-to-digital converter (SAR ADC) operating from a single 3 V to 5.5 V supply, housed in a 24-pin SOIC (Wide, 0.295 inch / 7.50 mm) package supplied on tape and reel. The -L suffix indicates the lower-power, 100 kSPS speed grade (vs. the standard AD7853 which runs at 200 kSPS), and the BRZ suffix denotes lead-free SOIC wide-body packaging. An SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm implemented with a capacitive DAC and a comparator to digitize an analog input in N successive approximation steps. SAR converters are valued for their deterministic latency, single-shot accuracy, and low power consumption compared to pipeline or sigma-delta ADCs. As a precision data-acquisition building block, an SAR ADC sits between the analog signal-conditioning front end (amplifiers, filters, muxes) and the digital host controller in the broader mixed-signal IC hierarchy: sensor -> analog front-end -> ADC -> MCU/DSP/FPGA. Key features include 12-bit resolution with no missing codes, an 8051/QSPI/MICROWIRE-compatible serial interface, self-calibration on power-up, and a typical power dissipation of only 12 mW at 5 V. The wide SOIC-24 footprint provides generous thermal headroom and easy hand-soldering or rework in prototyping. The single-supply, low-power architecture makes the part especially well suited to portable instrumentation, industrial process control, and battery-powered data-acquisition front ends. Typical applications include portable instrumentation and battery-powered data loggers, industrial process-control loops (4-20 mA digitized at the sensor), patient-monitoring front ends, multi-channel multiplexed data-acquisition systems, and precision sensor read-out (load cells, strain gauges, thermocouple digitizers). Designers value the -L grade when the application requires sub-100 kSPS throughput and minimal quiescent drain. When designing with this device, route the analog and digital grounds as a star from a common point, decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin, and keep the SCLK and CONVST traces short to avoid aperture jitter. The self-calibration routine takes a fixed time after power-up - reserve 100 us in your firmware before issuing the first conversion command. 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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AD7856ARZ-REEL7 - 14-Bit 285kSPS 8-CH SAR ADC | Analog Devices
AD7856ARZ-REEL7

AD7856ARZ-REEL7 - 14-Bit 285kSPS 8-CH SAR ADC | Analog Devices

The Analog Devices AD7856ARZ-REEL7 is a 14-bit, 285 kSPS, 8-channel successive approximation register (SAR) analog-to-digital converter (ADC) operating from a single 5 V supply in a 24-pin SOIC package. The -REEL7 suffix denotes a 7-inch tape-and-reel packaging variant of the AD7856ARZ. The device combines high-speed conversion (285 kSPS throughput) with low power consumption, drawing approximately 60 mW during continuous conversion and dropping to a few milliwatts in its programmable power-down modes. What is an SAR ADC? A successive approximation register analog-to-digital converter (SAR ADC) is a sample-and-hold based converter that performs a binary search across an internal DAC to determine each code. SAR ADCs are prized for deterministic latency, mid-to-high resolution (typically 12 to 18 bits), and excellent AC/DC linearity. In the ADC taxonomy, this part sits at: ADC -> data converter -> signal chain IC -> analog mixed-signal IC -> semiconductor. The AD7856ARZ-REEL7 belongs to Analog Devices' AD7856 family of low-power, single-supply SAR ADCs. The AD7856 integrates self-calibration and system-calibration routines that execute on power-up, ensuring offset and gain accuracy over time and temperature. The device supports pseudo-differential or single-ended analog inputs across 8 channels multiplexed by an on-chip input MUX. The digital interface is SPI-/QSPI-/MICROWIRE-/8051-compatible, making the ADC easy to drop into most microcontroller and DSP systems. The -REEL7 suffix does not change electrical specs - it only changes the carrier tape format (7-inch reel, 1000-piece reels typical). Typical applications include industrial process control, multi-channel data acquisition systems, battery-powered instrumentation, motor control feedback loops, and portable medical devices. The wide analog input range (0 V to VREF) and the ability to operate from a single 5 V rail make it well suited to 5 V MCU systems. Note that the AD7856ARZ-REEL7 has been reported as no longer manufactured on some distributor pages - check ADI's product page for current lifecycle status before designing in new systems. When designing with this device, ensure that the analog inputs are properly buffered with low-impedance drivers and that the reference input is decoupled with a 10 uF (or larger) capacitor close to the REF pin. The internal calibration should be allowed to complete before the first conversion is read. The CONVST pin falling edge initiates a conversion; software should respect the stated acquisition and conversion timing budgets.

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AD7858LARS-REEL - 12-bit 100kSPS 8-Ch SAR ADC | Analog Devices
AD7858LARS-REEL

AD7858LARS-REEL - 12-bit 100kSPS 8-Ch SAR ADC | Analog Devices

The Analog Devices AD7858LARS-REEL is a 12-bit, 100 kSPS successive-approximation analog-to-digital converter with 8 single-ended (or 4 pseudo-differential) input channels, packaged in a 24-pin SSOP and supplied on a 3.3 mm tape-and-reel carrier. The 'L' suffix denotes the low-power grade, optimized for 4.5 mW operation at VDD = 3 V, with the family sibling AD7858 (non-L) offering the 200 kSPS speed grade at 12 mW. A successive-approximation register (SAR) ADC is a sampling data-converter architecture that uses a binary-search algorithm against an internal DAC to produce N-bit digital codes in N conversion cycles. SAR ADCs sit between slow integrating ADCs (high resolution, low speed) and fast flash/pipeline ADCs (high speed, lower accuracy per channel); the SAR architecture is favored in multiplexed multi-channel industrial acquisition where medium bandwidth, deterministic latency, and excellent DC accuracy are simultaneously required. As an 8-channel muxed SAR ADC, the AD7858L belongs to the data-acquisition IC family (ADC -> data converter -> mixed-signal IC -> semiconductor). Key features include a serial interface compatible with 8051/QSPI/MICROWIRE/SPI hosts, system and self-calibration with autocalibration at power-up, automatic power-down between conversions (25 µW standby), eight single-ended or four pseudo-differential analog inputs, and operation from a single 3 V to 5.5 V supply. The wide supply range supports both 3.3 V and 5 V digital rails common in embedded MCU/ASIC systems, and the autocalibration on power-up removes the need for host-driven offset/gain correction routines. The architecture combines a charge-redistribution DAC, a high-impedance track-and-hold, and on-chip calibration registers. The automatic power-down sequence between conversions reduces average current draw by orders of magnitude in low-duty-cycle applications, making the part attractive for battery-powered data loggers where the ADC wakes briefly to sample and sleeps the rest of the time. Typical applications include industrial process control and PLC analog input modules, multi-channel data-acquisition front ends, portable instrumentation and battery-powered sensor loggers, automotive body and chassis sensor interfaces, medical patient-monitoring front ends, and optical network power monitoring. The 8-channel input mux lets one ADC service eight sensors, lowering BOM cost and PCB area versus per-channel dedicated converters. When designing with this part, ensure the host MCU provides a serial clock between 1 MHz and 5 MHz and that the SCLK-to-DOUT propagation delay is budgeted into the readback routine; the serial interface does NOT include a busy-state indicator, so the host must wait at least the conversion-time interval before clocking out data. Decouple VDD with a 10 µF tantalum in parallel with a 0.1 µF ceramic placed within 5 mm of the pin. This page synthesizes distributor pricing, drop-in 24-SSOP alternatives, application circuits, and design pitfalls not consolidated in the manufacturer datasheet alone.

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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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