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AD7794BRU-REEL - 24-Bit 6-Ch Sigma-Delta ADC | Analog Devices
AD7794BRU-REEL

AD7794BRU-REEL - 24-Bit 6-Ch Sigma-Delta ADC | Analog Devices

The Analog Devices AD7794BRU-REEL is a low-power, low-noise, complete 24-bit sigma-delta analog-to-digital converter (ADC) with 6 differential/6 pseudo-differential input channels, an on-chip instrumentation amplifier (in-amp), and an embedded bandgap reference, housed in a 24-pin TSSOP (RU-24) package supplied on tape and reel. It supports a serial SPI-/QSPI-/MICROWIRE-/DSP-compatible interface and offers up to 23 effective bits of RMS noise at low output data rates (4.17 Hz and 16.7 Hz), making it a complete analog front end for high-precision measurement applications. A sigma-delta ADC is a type of oversampling converter that uses a high-frequency modulator followed by digital filtering to achieve very high resolution at low bandwidth. The category hierarchy is ADC -> data converter -> signal chain IC -> semiconductor. These devices are favored in precision DC measurement because noise and linearity are pushed far below the level of successive-approximation or pipelined ADCs, at the cost of conversion speed. The AD7794 family sits at the high-precision, low-power end of the delta-sigma spectrum and is widely used in industrial weighing, strain-gauge bridges, and temperature scanners. Key features include 6 true-differential analog inputs, an integrated low-noise programmable-gain in-amp (gains 1 to 128), a 2.5 V on-chip reference, a typical supply current of 400 uA, and an operating supply range of 2.7 V to 5.5 V (analog) and 1.8 V to 5.5 V (digital). The TSSOP-24 package is only 4.40 mm wide, enabling compact PCB layouts in bridge-sensor and thermocouple conditioning boards. An internal clock, programmable excitation currents (10 uA/100 uA/1 mA), and a precision calibration block (zero-scale and full-scale) simplify sensor linearization without external components. The modulator architecture uses a third-order sigma-delta loop followed by a digital SINC3 (and optional SINC4) filter, allowing trade-offs between output data rate (4.17 Hz to 470 Hz) and RMS noise. The on-chip in-amp supports low-side bridge sensors; the integrated bias generator provides a 2.5 V common-mode bias for thermocouple and ground-referred inputs. Power-down modes reduce current to a few microamps, which is essential for battery-powered transmitters and handheld instrumentation. Typical applications include industrial weigh scales, temperature and pressure process control, battery-powered instrumentation, and precision data acquisition front ends. The wide gain range (1 to 128) lets a single part interface small bridge signals (a few mV) directly to a microcontroller. When designing with this device, apply good PCB layout practice: keep the analog inputs short, place decoupling capacitors close to AVDD/DVDD pins, and use a ground plane. A [DATA_NEEDED: full input-referred noise table] reference points are recommended for high-temperature operation. According to Analog Devices product literature, the AD7794 design kit and AN-1041 application note contain recommended PCB patterns and bridge connection circuits. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the standalone datasheet PDF.

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AD7794BRUZ - 24-Bit Sigma-Delta ADC, 6-Channel | Analog Devices
AD7794BRUZ

AD7794BRUZ - 24-Bit Sigma-Delta ADC, 6-Channel | Analog Devices

The Analog Devices AD7794BRUZ is a high precision, 6-channel, low noise, low power 24-bit sigma-delta analog-to-digital converter (ADC) supplied in a 24-lead TSSOP package. It integrates an on-chip instrumentation amplifier, a low drift band gap reference, programmable excitation current sources, burnout currents, and a bias voltage generator that sets the common-mode voltage to AVDD/2. The device operates from a 2.7 V to 5.25 V supply, consumes only 500 µA typical, and provides an SPI-compatible serial interface. It is specified for the -40°C to +105°C industrial temperature range and is RoHS compliant. A sigma-delta ADC is an oversampling converter that uses a modulator and digital filter to achieve very high resolution and excellent noise performance. The AD7794BRUZ sits directly between a sensor or transducer and the host processor, eliminating the need for an external gain stage in many precision measurement chains. It belongs to the precision ADC family within data acquisition ICs and is optimized for small-amplitude sensor signals, especially bridge, RTD, thermocouple, and load-cell outputs. Key features include 24-bit resolution, six differential analog inputs, a programmable gain amplifier with gains of 1, 2, 4, 8, 16, 32, 64, and 128, and low input noise of 40 nV/√Hz. The ADC also includes an internal low drift band gap reference, accepts up to two external differential references, and contains a temperature sensor for cold-junction compensation. Its digital filter provides 50 Hz/60 Hz rejection, which improves accuracy in noisy industrial environments while simplifying anti-alias filtering. The AD7794BRUZ is architected as a complete analog front end for high precision measurement applications. The on-chip in-amp allows low-level signals from bridge sensors to be connected directly to the ADC, while programmable excitation current sources simplify RTD excitation. The bias voltage generator sets the common-mode level of each channel to AVDD/2, allowing the ADC interface to bipolar sensors and improving dynamic range. Its low 500 µA current consumption makes it well suited for portable and battery-operated systems. Typical applications include process control, temperature measurement, pressure sensing, weigh scales, portable instrumentation, and multi-channel data acquisition. The combination of high resolution, low noise, and low power makes the AD7794BRUZ suitable for precision industrial and medical sensor interfaces. When designing with this ADC, use clean analog and digital supply decoupling, place a solid analog ground plane, bypass both reference input pairs with 0.1 µF capacitors, and consider SPI isolation when the converter is used in electrically noisy environments.

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AD7795BRUZ - 16-Bit Sigma-Delta ADC, 6-Channel | Analog Devices
AD7795BRUZ

AD7795BRUZ - 16-Bit Sigma-Delta ADC, 6-Channel | Analog Devices

The AD7795BRUZ is a low power, low noise, complete analog front end for high precision measurement applications from Analog Devices. It integrates a 16-bit sigma-delta ADC with six differential inputs, an on-chip low noise instrumentation amplifier (in-amp), and a precision bandgap reference in a 24-lead TSSOP package. The device operates from a single 2.7V to 5.25V supply and achieves up to 470 SPS output data rate, making it suitable for a wide range of precision sensing and data acquisition systems. An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital values. The AD7795BRUZ is a sigma-delta ADC, a type of ADC that uses oversampling and noise shaping to achieve high resolution and excellent noise performance. It belongs to the family of precision data converters, which are essential in applications requiring accurate measurement of physical quantities such as temperature, pressure, and strain. The on-chip in-amp allows direct interfacing of small amplitude signals, eliminating the need for external amplification stages. Key features of the AD7795BRUZ include a 16-bit resolution, six differential input channels, a programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, 16, 32, 64, and 128, and a low noise performance of 23 effective bits at 16.7 Hz output rate. The device also features a low power consumption of 400 µA typical, with a power-down mode that reduces current to 1 µA max. It includes an internal band gap reference with low drift, and can accept up to two external differential references. The ADC communicates via a serial interface, compatible with SPI, and operates over a temperature range of -40°C to +105°C. The AD7795BRUZ is designed for high precision measurement applications, including temperature sensing with RTDs and thermocouples, pressure measurement, and weigh scales. Its low noise and high resolution make it ideal for bridge sensors and other low-level signal conditioning. The device is available in a 24-lead TSSOP package, which is compact and suitable for space-constrained designs. The package is RoHS compliant and lead-free. Typical applications include industrial process control, medical instrumentation, and portable battery-powered devices. The low power consumption and power-down mode extend battery life in portable applications. The on-chip in-amp and reference reduce external component count, simplifying design and improving reliability. When designing with the AD7795BRUZ, it is important to provide adequate decoupling on the AVDD and DVDD supplies, and to use a clean analog ground plane. The reference inputs should be bypassed with low ESR capacitors. The serial interface should be isolated from noisy digital circuitry to maintain the ADC's noise performance.

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AD7796BRUZ - 16-Bit Sigma-Delta ADC for Bridge Sensors | Analog Devices
AD7796BRUZ

AD7796BRUZ - 16-Bit Sigma-Delta ADC for Bridge Sensors | Analog Devices

The AD7796BRUZ is a low power, 16-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices, specifically designed for high precision bridge sensor applications such as weigh scales. It integrates a complete analog front end, including a programmable gain instrumentation amplifier with a fixed gain of 128, enabling direct interfacing of small amplitude signals from bridge sensors. The device operates from a 2.7V to 5.25V power supply and features a 16-bit resolution with a sigma-delta architecture, ensuring high accuracy and noise performance. The AD7796BRUZ is available in a 16-lead TSSOP package, making it suitable for space-constrained designs. An analog-to-digital converter (ADC) is a critical component in electronic systems that converts continuous analog signals into discrete digital values for processing by microcontrollers or digital signal processors. Sigma-delta ADCs, like the AD7796, use oversampling and noise shaping to achieve high resolution and excellent noise performance, making them ideal for precision measurement applications. The AD7796 belongs to the family of sigma-delta ADCs, which are widely used in industrial instrumentation, medical devices, and sensor interfaces where accuracy is paramount. Key features of the AD7796BRUZ include a fixed gain of 128, which eliminates the need for external amplification stages, and a low power consumption of typically 1.5 mA, making it suitable for battery-powered applications. The device also includes an on-chip temperature sensor, a reference voltage source, and a serial interface compatible with SPI, simplifying system integration. The ADC supports a data rate of up to 470 Hz, providing fast conversion for real-time monitoring. The AD7796BRUZ utilizes a sigma-delta modulator followed by a digital filter, achieving high resolution and low noise. The on-chip instrumentation amplifier with a gain of 128 allows direct connection to bridge sensors, reducing external component count and improving system reliability. The device also features a differential input, which helps reject common-mode noise, and a programmable gain amplifier that can be configured for various sensor outputs. Typical applications for the AD7796BRUZ include weigh scales, strain gauge measurements, pressure sensors, and other bridge-based sensing systems. Its high resolution and low noise make it ideal for precision industrial and medical instrumentation. The device is also suitable for portable devices due to its low power consumption. When designing with the AD7796BRUZ, it is important to ensure proper decoupling of the power supply and careful PCB layout to minimize noise. The reference voltage should be stable and low-noise to achieve optimal performance. Additionally, the SPI interface should be configured correctly to avoid communication errors.

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AD7797BRUZ - 24-Bit Sigma-Delta ADC for Bridge Sensors | Analog Devices
AD7797BRUZ

AD7797BRUZ - 24-Bit Sigma-Delta ADC for Bridge Sensors | Analog Devices

The AD7797BRUZ is a low power, 24-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices, specifically designed for high precision bridge sensor applications such as weigh scales. It integrates a complete analog front end including a programmable gain instrumentation amplifier with a fixed gain of 128, enabling direct interface to small amplitude signals from bridge sensors. The device operates from a 2.7V to 5.25V power supply and features a 16-pin TSSOP package, making it suitable for space-constrained designs. A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is part of the broader category of ADCs, which are essential components in data acquisition systems, converting analog signals into digital data for processing. The AD7797BRUZ is a complete analog front end, combining the ADC with an instrumentation amplifier and reference, simplifying the design of precision measurement systems. Key features include a 24-bit resolution, a fixed gain of 128, and a low power consumption of typically 500 µA. The device also includes a 2-wire serial interface (SPI) for communication, an internal reference, and a temperature sensor. The AD7797BRUZ is designed for bridge sensor applications, providing high accuracy and stability over temperature. The AD7797BRUZ uses a sigma-delta architecture with a digital filter, achieving high resolution and low noise. The on-chip instrumentation amplifier has a fixed gain of 128, allowing direct connection to bridge sensors without external amplification. The device also includes a burnout current source for sensor fault detection, enhancing system reliability. Typical applications include weigh scales, strain gauge measurements, pressure sensors, and other bridge-based transducers. The AD7797BRUZ is ideal for battery-powered portable instruments due to its low power consumption and small package size. When designing with the AD7797BRUZ, ensure proper decoupling of the power supply and reference pins. The SPI interface should be isolated from noisy digital lines to maintain accuracy. The device is available in a 16-lead TSSOP package, which is suitable for compact PCB layouts.

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AD7798BRUZ - 16-Bit Sigma-Delta ADC, 3-Channel | Analog Devices
AD7798BRUZ

AD7798BRUZ - 16-Bit Sigma-Delta ADC, 3-Channel | Analog Devices

The AD7798BRUZ is a low-power, 16-bit Sigma-Delta analog-to-digital converter (ADC) from Analog Devices, featuring three differential input channels and an on-chip instrumentation amplifier (in-amp). It operates from a single 2.7V to 5.25V supply and is available in a 16-lead TSSOP package. The device integrates a precision reference, a low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator, making it a complete data acquisition solution for precision measurement applications. A Sigma-Delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution and excellent noise performance. It is ideal for low-frequency, high-precision applications such as sensor measurement, industrial process control, and instrumentation. The AD7798BRUZ belongs to the family of Sigma-Delta ADCs, which are part of the broader category of data converters, essential in bridging analog signals to digital processing systems. Key features of the AD7798BRUZ include a programmable output data rate from 4.17 Hz to 470 Hz, RMS noise as low as 1.5 µV (at 4.17 Hz), and a typical supply current of 400 µA, with a power-down mode consuming only 1 µA. The on-chip in-amp provides gain up to 128, allowing direct connection to low-level sensors such as thermocouples and strain gauges. The SPI-compatible serial interface simplifies communication with microcontrollers and DSPs. The device architecture includes a chopper-stabilized amplifier, a Sigma-Delta modulator, and a digital filter, ensuring high accuracy and low offset drift. The internal reference and clock reduce external component count, while the low-side power switch enables bridge sensor excitation. The AD7798BRUZ is specified for the industrial temperature range of -40°C to +105°C, making it suitable for harsh environments. Typical applications include temperature measurement with RTDs and thermocouples, pressure and strain gauge sensing, and battery monitoring. Its low power consumption and high resolution make it ideal for portable and battery-powered instruments. The device is also used in weigh scales and process control systems where precision is critical. When designing with the AD7798BRUZ, 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 SPI interface should be isolated if the ADC is remote from the controller to avoid ground loops.

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AD7799BRU-REEL - 24-Bit 3-Ch Low-Noise Sigma-Delta ADC | ADI
AD7799BRU-REEL

AD7799BRU-REEL - 24-Bit 3-Ch Low-Noise Sigma-Delta ADC | ADI

The Analog Devices AD7799BRU-REEL is a low-noise, low-power, 3-channel, 24-bit sigma-delta analog-to-digital converter (ADC) with an integrated low-noise in-amp, on-chip reference detect, burnout current sources, and programmable digital output pins. Per the manufacturer product page, the part ships in a 16-lead TSSOP package and the datasheet lists a 1ku list price starting at $7.06 as of 2026-10-12. A sigma-delta ADC is a type of oversampling converter that trades raw sampling speed for very high resolution and excellent noise rejection. It pushes a low-frequency, noisy analog signal through a modulator and a digital decimation filter, averaging out wideband noise while delivering 16- or 24-bit output words over an SPI-compatible serial interface. Sigma-delta ADCs sit at the top of the precision-ADC family tree (precision ADC -> ADC -> data converter -> mixed-signal IC) and are commonly paired with load-cell, thermocouple, and RTD front ends in industrial instrumentation. Key features include 3 differential analog inputs, output data rates from 4.17 Hz to 470 Hz (software programmable), an integrated low-noise instrumentation amplifier for small bridge signals, and on-chip features such as a low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator. Channel count, gain, and update rate are all user-configurable through the serial port, while the 16-TSSOP footprint keeps the bill of materials compact for space-constrained sensor boards. Architecturally, the AD7799 combines a low-noise chopper-stabilized in-amp with a third-order sigma-delta modulator and a digital filter. The chopper stabilization minimizes 1/f drift at low source impedances, while the sigma-delta loop delivers 24-bit noise-free resolution at the slowest output rates, equating to effective ENOB suitable for weighing scales and 6-digit panel meters. Typical applications include weigh scales and load-cell digitizers, thermocouple and RTD temperature acquisition modules, industrial process-control PLC analog input cards, and precision pressure or strain-gauge sensor transmitters. Its low quiescent current also supports battery-powered portable instrumentation such as handheld multimeters and gas detectors. When designing with the AD7799, the dominant trade-off is update rate vs effective resolution: choose the slowest data rate (4.17 Hz) for the lowest RMS noise, or move up to 470 Hz when throughput matters. The on-chip in-amp means most bridge outputs can be connected directly without external gain stages, but extra filtering at the analog inputs is still recommended for harsh industrial environments. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a same-package migration path to the lead-free -Z suffix variant for RoHS-strict builds.

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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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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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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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