Интегральные схемы

AD674BTE/883B

AD674BTE/883B - 12-Bit SAR ADC, 28-CDIP | Analog Devices

The AD674BTE/883B is a complete 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, featuring an internal high-precision voltage reference and clock. It is packaged in a 28-pin ceramic dual-in-line package (CDIP) and is designed for direct interface to 8- and 16-bit microprocessor buses via three-state output buffers. The device operates from ±12V and +5V supplies and converts in a maximum of 15 microseconds, making it suitable for high-speed data acquisition systems. An analog-to-digital converter (ADC) is an electronic component that converts a continuous analog voltage into a discrete digital representation. The AD674BTE/883B is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed and moderate resolution, making them ideal for industrial control, instrumentation, and data acquisition. The AD674B family is pin-compatible with the industry-standard AD574A but offers faster conversion time and lower power consumption. Key features of the AD674BTE/883B include 12-bit resolution, a maximum conversion time of 15 µs, and an internal 10V reference. It accepts bipolar input ranges of ±5V and ±10V, as well as unipolar 0V to 10V and 0V to 20V, selectable via pin strapping. The device includes a three-state output buffer for direct bus interfacing and operates over the extended temperature range of -55°C to +125°C, meeting MIL-STD-883B standards. Technically, the AD674BTE/883B integrates a precision voltage reference, clock, and comparator on-chip, reducing external component count. The SAR architecture ensures monotonicity and no missing codes over the full temperature range. The device features a 12-bit parallel output with a status pin (STS) that indicates conversion completion, simplifying microprocessor handshaking. The 28-pin CDIP package provides excellent thermal and mechanical stability for harsh environments. Typical applications include military and aerospace data acquisition, industrial process control, medical instrumentation, and scientific analysis equipment. The device's wide operating temperature range and high reliability make it suitable for mission-critical systems where accuracy and durability are paramount. When designing with the AD674BTE/883B, ensure proper decoupling of the power supplies and a clean analog ground plane to minimize noise. The internal reference can be overridden by an external reference for improved accuracy, but the internal reference is sufficient for most applications. The conversion start (CE, CS, R/C) control pins allow flexible timing, and the STS pin can be used to trigger interrupts or polling routines.

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AD676AD

AD676AD - 16-Bit 100 kSPS SAR ADC | Analog Devices

The Analog Devices AD676AD is a 16-bit, single-channel, parallel-output sampling analog-to-digital converter with a conversion rate of 100 kSPS, housed in a 28-CDIP package. It uses a switched-capacitor charge-redistribution architecture and an on-chip autocalibration function to support accurate signal acquisition. The verified product information identifies the AD676AD as a 28-pin SAR ADC with one analog input, 16-bit resolution, parallel output, and a 10 µs total conversion time. A sampling ADC samples an analog input through an internal sample-and-hold function and converts it into a digital value. The SAR, or successive-approximation-register, architecture is suited to instrumentation, measurement, and signal-processing systems requiring moderate conversion speed and high resolution. The AD676AD belongs to the broader ADC, data-conversion, and analog-signal-processing hierarchy, and its parallel interface can simplify connections to suitable digital acquisition logic. Key verified features include 16-bit resolution, 100 kSPS conversion performance, autocalibrating on-chip sample-and-hold, and a parallel output format. The device is also described as having no missing codes, 1 LSB integral nonlinearity, 97 dB THD, 90 dB signal-to-noise-plus-distortion ratio, and 1 MHz full-power bandwidth according to the supplied ADI-related technical listing. These figures describe the converter's intended acquisition performance, but system-level results also depend on reference quality, analog conditioning, clocking, layout, and digital post-processing. The AD676 uses a switched-capacitor/charge-redistribution architecture and digitally corrects internal nonlinearities through on-chip autocalibration. Autocalibration supports consistent conversion behavior in measurement applications, while the parallel output format allows the converted word to be captured by compatible logic. The supplied manufacturer documentation emphasizes both dynamic specifications, such as THD and S/(N+D), and DC parameters relevant to precision measurement. Typical applications include industrial process measurement, instrumentation, laboratory data acquisition, sensor-interface systems, and embedded measurement platforms. The 100 kSPS rate is suitable for sampling many control, monitoring, and waveform-related signals while the 16-bit word provides high nominal resolution. The 28-CDIP package is through-hole and requires careful board-level pin mapping and signal-integrity planning. When designing around the AD676AD, preserve the required reference, analog input, digital interface, and power connections specified by the manufacturer datasheet. Validate the complete signal chain with the intended source impedance, sampling interval, and calibration sequence. Because the verified results do not provide a complete pinout or operating-temperature table in the supplied material, those details must be confirmed from the official AD676 datasheet before layout or production release.

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AD676BD

AD676BD - 16-Bit 100 kSPS Sampling ADC | Analog Devices

The Analog Devices AD676BD is a 16-bit, 100 kSPS single-input sampling analog-to-digital converter with parallel output in a 28-pin CDIP package. It uses switched-capacitor charge redistribution, completes conversion in 10 microseconds, and includes an on-chip autocalibration function and sample-and-hold circuit. A sampling ADC samples an analog input and converts it into a digital code for measurement, instrumentation, signal processing, and control systems. The AD676 belongs to the SAR ADC family, where successive approximation compares the sampled voltage against an internal DAC. Its parallel output presents all 16 result bits together rather than serializing them through a shift register, which supports simpler data capture at moderate clock rates. The verified device data identifies 16-bit resolution, 100 kSPS conversion throughput, one SAR input, no missing codes, 1 LSB integral nonlinearity, 97 dB THD, 90 dB signal-to-noise-plus-distortion ratio, and 1 MHz full-power bandwidth. On-chip autocalibration digitally corrects internal nonlinearities. The parallel interface provides 16-bit output data, while the integrated sample-and-hold function reduces the external sampling circuitry required. The AD676 datasheet also identifies dynamic and direct-current specifications. Dynamic parameters such as S/(N+D), THD, and IMD characterize signal-chain behavior, while DC parameters support precision measurement. The 28-CDIP mechanical format through-hole package is larger than modern leadless options but remains useful where through-hole construction, serviceability, and legacy instrument compatibility are priorities. Typical uses include industrial measurement, process monitoring, audio and signal processing, data acquisition, and precision instrumentation. Design implementation must observe the manufacturer's analog, digital, reference, and power-supply requirements. Because acquisition accuracy depends on the complete signal chain, reference stability, source impedance, grounding, clock quality, and input bandwidth are as important as nominal converter resolution. This page combines exact verified specifications, official documentation links, commercial availability references, and application guidance. It does not invent unreported electrical, environmental, pricing, pinout, or compliance values; unavailable engineering data remains explicitly identified in the specifications.

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AD676JN

AD676JN - 16-Bit 100kSPS Parallel SAR ADC | Analog Devices

The Analog Devices AD676JN is a 16-bit, 100 kSPS parallel-output successive-approximation (SAR) analog-to-digital converter housed in a 28-pin plastic DIP (PDIP-28) package. It combines a switched-capacitor/charge-redistribution core with on-chip autocalibration, delivering 10 microsecond total conversion time, ±1 LSB INL maximum (no missing codes), 97 dB THD, and 90 dB signal-to-noise ratio. The integrated sample-and-hold amplifier accepts full-scale unipolar or bipolar input ranges from the on-chip reference or an external reference source. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes at a defined sample rate. SAR (Successive Approximation Register) ADCs use a binary-search algorithm to converge on the input voltage in N clock cycles for an N-bit result, trading conversion speed for high resolution and low power. Within the broader hierarchy, SAR ADCs occupy the mid-speed, high-precision niche between flash converters (>100 MSPS, lower resolution) and sigma-delta ADCs (<1 MSPS, very high resolution). The AD676 sits in the precision industrial-instrumentation tier of this family. Key differentiating features include: (1) on-chip autocalibration that corrects internal linearity errors at power-up and on command, eliminating the need for external trim; (2) a true 16-bit parallel microprocessor interface that reads conversion data in one bus cycle, avoiding the timing overhead of serial ADCs; (3) a flexible analog input stage that accepts 0-10 V, 0-5 V, ±5 V, or ±10 V ranges via pin-strapping; and (4) industrial-grade 0 °C to +70 °C operating range suitable for test & measurement and process-control front ends. Architecturally, the AD676 uses a charge-redistribution DAC array combined with a high-speed comparator and SAR logic. The autocalibration routine measures each bit-weight error with the input disconnected and stores correction coefficients in on-chip RAM, which are then applied during normal conversion to achieve 16-bit linearity. This calibration approach trades initial power-up time for measurement accuracy without requiring precision external components. Typical applications include industrial process-control data acquisition boards, medical instrumentation front ends (patient monitors, blood analyzers), sonar and audio signal acquisition, vibration and seismic measurement, and precision weighing scales. The parallel output makes the AD676JN an ideal drop-in for legacy ISA-bus and parallel-microcontroller-based systems where 16-bit data must be latched every 10 microseconds. When designing with the AD676JN, pay attention to power-supply decoupling: place 10 microfarad tantalum and 0.1 microfarad ceramic capacitors within 5 mm of the +VCC and -VCC pins. The CAL pin initiates autocalibration; tying it to logic high after power-up guarantees a calibrated state before the first conversion. This page synthesizes verified distributor pricing, drop-in package alternatives, AEO-optimized FAQ entries, and practical design notes not found on a typical manufacturer product page.

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AD676TD/883B

AD676TD/883B - 16-Bit 100kSPS SAR ADC | Analog Devices

The AD676TD/883B is a 16-bit successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices, designed for high-precision data acquisition. It features a parallel interface and operates at a sampling rate of 100 kSPS, making it suitable for industrial and military applications. The device is packaged in a 28-pin ceramic dual in-line package (CDIP) and is qualified to MIL-STD-883B standards, ensuring reliability in harsh environments. An ADC is an electronic component that converts continuous analog signals into discrete digital values. The AD676TD/883B is a specific type of ADC known as a SAR ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are valued for their high resolution, low power consumption, and fast conversion times, making them ideal for applications such as data acquisition systems, industrial process control, and medical instrumentation. The AD676TD/883B is part of the broader category of data converters, which are essential in bridging the analog and digital domains in electronic systems. Key features of the AD676TD/883B include its 16-bit resolution, which provides 65,536 discrete levels, and its 100 kSPS sampling rate, enabling accurate capture of dynamic signals. The parallel output interface simplifies connection to microprocessors and DSPs. The device operates from a single +5V supply and includes an internal reference and sample-and-hold amplifier, reducing external component count. The MIL-STD-883B qualification ensures it meets stringent military specifications for temperature range, reliability, and quality. Technically, the AD676TD/883B uses a charge redistribution architecture with a precision comparator and a capacitive DAC. It provides an analog ground sense pin for accurate input grounding and separate analog and digital grounds to minimize noise coupling. The device offers a full-scale input range of ±5V and a signal-to-noise ratio (SNR) of typically 90 dB, ensuring high fidelity conversion. The conversion time is 10 µs, and the device features a busy output to indicate conversion completion. Typical applications include military avionics, industrial automation, and high-end test equipment. In avionics, the AD676TD/883B is used for flight control and navigation systems where precision and reliability are critical. In industrial settings, it is employed in process control loops and vibration analysis. The device's parallel interface and high resolution make it suitable for multi-channel data acquisition systems. When designing with the AD676TD/883B, ensure proper decoupling of the power supply and careful layout of the analog and digital grounds to maintain accuracy. The analog input should be driven by a low-impedance source to avoid sampling errors. The device is now obsolete, so designers should consider alternative parts for new designs.

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AD677JD

AD677JD - 16-Bit 100 kSPS Serial ADC | Analog Devices

The Analog Devices AD677JD is a 16-bit, serial-output, 100 kSPS sampling analog-to-digital converter in a 16-pin CDIP package, with a specified 0°C to 70°C operating-temperature range and 12 V nominal supply. It combines a serial interface, on-chip sample-and-hold function, and autocalibrating switched-capacitor/charge-redistribution conversion architecture. A sampling ADC converts an analog input into a digital code at a specified sample rate. The AD677JD belongs to the ADC and data-converter hierarchy, where its 16-bit resolution supports detailed measurement while its 100 kSPS rate handles rapidly changing analog signals. The serial output reduces pin count and supports compact instrument and industrial-control designs. Key verified features include 16-bit resolution, 100 kSPS throughput, no missing codes, on-chip autocalibration, −99 dB THD, 92 dB S/(N+D), and 1 MHz full-power bandwidth. The manufacturer describes the conversion process as switched-capacitor/charge redistribution with digitally corrected internal nonlinearities through on-chip autocalibration. The AD677 family is available in 16-pin narrow plastic DIP, 16-pin narrow side-brazed ceramic, and 28-lead SOIC packages. AD677JD is the 16-pin CDIP ordering variant identified in distributor data. Its operating range is 0°C to 70°C, making it appropriate for commercial-temperature instrumentation where that range is acceptable. Typical uses include industrial process measurement, laboratory data acquisition, sensor interfaces, waveform capture, and embedded measurement systems. Designers should verify supply tolerances, reference requirements, digital-interface timing, acquisition timing, and calibration behavior against the manufacturer datasheet before layout or firmware implementation. For AD677JD sourcing, compare distributor inventory, lifecycle status, and price as of 2026-10-22. The 16-pin DIP footprint is mechanically straightforward, but digital timing, analog input conditioning, and power-supply noise still determine practical performance.

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AD677JN

AD677JN - 16-Bit 100 kSPS Serial ADC | Analog Devices

The Analog Devices AD677JN is a 16-bit serial-output sampling analog-to-digital converter with a conversion rate of 100 kSPS, a 10 µs total conversion time, and a 16-pin narrow plastic DIP package. It accepts analog signals through an on-chip sample-and-hold function and provides no-missing-codes operation. The AD677JN is intended for precision signal acquisition where serial data transfer, calibration, and compact sampling are useful. According to the verified Analog Devices product information, the AD677 is also available in ceramic and SOIC configurations, while the JN suffix identifies the narrow plastic DIP option. A sampling ADC is a data-acquisition IC that samples an analog voltage and converts it into a digital code. The AD677 belongs to the ADC -> data converter -> analog signal-processing -> semiconductor hierarchy. Its switched-capacitor and charge-redistribution architecture supports 16-bit resolution at 100 kSPS, making it appropriate for industrial measurement, instrumentation, and control systems. The manufacturer describes on-chip autocalibration as a way to digitally correct internal nonlinearities and improve overall conversion performance. Key features include a 16-bit serial interface, a 100 kSPS sampling rate, an on-chip sample-and-hold circuit, and a stated full-power bandwidth of 1 MHz. The verified datasheet search result also identifies no missing codes, 99 dB THD, 92 dB S/(N+D), and a 10 µs conversion time. These figures describe the converter's acquisition and dynamic-performance capabilities, but exact signal-chain performance still depends on reference voltage, input amplitude, clocking, grounding, and PCB layout. The AD677 operates from +5 V and +12 V analog supplies, with a separate digital supply identified as VDD. Verified source material reports typical conversion consumption of approximately 450 mW with a 10 V reference and 360 mW with a 5 V reference. The separate digital supply helps reduce digital crosstalk, while the analog-ground sense connection allows the converter to reference the signal-source ground remotely. Those features are important when the ADC is placed near a sensor or analog front end rather than in a central digital section. Typical applications include industrial process monitoring, precision instrumentation, laboratory measurement, transducer acquisition, and embedded control systems. The serial output reduces parallel data-bus routing requirements, while autocalibration can simplify system-level accuracy planning. The principal design trade-off is that this older high-resolution ADC family is marked LAST TIME BUY, so new production designs should verify lifecycle availability, sourcing, and any applicable migration path before committing to the AD677JN. For PCB implementation, place input, reference, analog-ground, and digital-supply connections according to the manufacturer datasheet and keep the analog signal path compact. The verified material identifies a remote analog-ground sense function; use it as intended rather than treating every ground connection as electrically identical. This page synthesizes the verified datasheet snippets, lifecycle status, sourcing context, and practical application guidance without inventing unprovided electrical limits or pin assignments.

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AD678AJ

AD678AJ - 12-Bit 200 kSPS Flash ADC | Analog Devices

The Analog Devices AD678AJ is a monolithic 12-bit flash analog-to-digital converter capable of 200 kSPS, with one input, parallel microprocessor-compatible data output, and a 44-pin JLCC ceramic package. It integrates a sample-and-hold amplifier, voltage-reference circuitry, clock generation, and a digital interface in one device. The verified distributor description identifies 12-bit resolution, one input, one flash conversion cycle, and 200 kSPS throughput. An ADC converts an analog voltage into a numerical digital value. This flash ADC belongs to the data-converter hierarchy and uses parallel output data, making it suitable for systems where a controller, microprocessor, or programmable logic device reads each conversion through dedicated data lines. Its integrated sample-and-hold amplifier supports sampled acquisition, while the internal voltage reference and clock-generation circuitry reduce the external support components required by a complete measurement channel. The AD678AJ is specified for dynamic signal-processing performance, including signal-to-noise-plus-distortion ratio, total harmonic distortion, and intermodulation distortion. According to the Analog Devices product page, the AD678 shares its pinout with the 14-bit, 128 kSPS AD679, providing a documented upgrade path when a different resolution and conversion rate are acceptable. The same page also notes that MIL-STD-883-compliant versions are available, although the verified data does not establish that qualification for AD678AJ itself. Typical uses include industrial data acquisition, process-control instrumentation, waveform sampling, communications receivers, and embedded measurement systems. Designers should use the manufacturer datasheet for the complete electrical limits, acquisition timing, reference behavior, interface logic, pin names, and recommended operating conditions. The 44-pin JLCC package is not one of the canonical package-diagram keys used by this output library, so its exact pinout and package drawing must be checked directly against the AD678 datasheet. For replacement work, package and pinout compatibility must be established independently from functional similarity. AD678AJ is a through-hole 44-JLCC device; the verified cross-reference results do not identify a manufacturer-confirmed, same-package, pin-to-pin substitute. Distributor availability, pricing, and lifecycle status also require current quotation or inventory confirmation. This page combines the verified AD678 manufacturer information, distributor specifications, package details, upgrade-path information, and sourcing links. It is intended to support engineers evaluating the AD678AJ for precision sampling systems while clearly separating verified data from information that must be confirmed from the datasheet or an authorized distributor.

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AD678KD

AD678KD - 12-Bit 200 kSPS Sampling ADC | Analog Devices

The Analog Devices AD678KD is a monolithic, complete sampling analog-to-digital converter with 12-bit resolution, a 200 kSPS sampling rate, and a 28-pin ceramic DIP package. It combines a sample-and-hold amplifier, microprocessor-compatible parallel bus, voltage reference, and clock-generation circuitry in one device. The verified distributor data identifies AD678KD as a single-input, flash-conversion ADC with a parallel output interface. What is a complete sampling ADC? A sampling ADC captures an analog voltage with an internal sample-and-hold amplifier and converts that sample into a digital code. The AD678 belongs to the ADC hierarchy and integrates the sampling, conversion, reference, clock, and digital-interface functions needed for direct signal acquisition. This integration reduces the number of external components and makes the converter suitable for instrumentation, industrial control, communications, and measurement systems. Key verified characteristics include 12-bit resolution, 200 kSPS operation, one analog input, flash architecture, parallel output, and a 28-pin CDIP/SBCDIP package. The AD678 is specified for dynamic parameters including signal-to-noise-plus-distortion ratio, total harmonic distortion, and intermodulation distortion. Those parameters are particularly relevant when the converter handles waveform acquisition or other signal-processing applications. The device also includes a voltage reference and clock-generation circuitry, allowing it to operate as a more complete acquisition element than a bare flash-converter core. The Analog Devices product page states that the AD678 provides the same pinout as the 14-bit, 128 kSPS AD679 ADC, creating a documented upgrade path when a design requires related interface geometry and higher resolution at a lower sampling rate. Typical uses include dynamic signal measurement, process monitoring, communications equipment, laboratory instrumentation, and industrial data-acquisition systems. The 200 kSPS rate is suitable for many high-speed measurement tasks, while the 12-bit code width establishes the digital resolution available to downstream processors. A key design consideration is the distinction between a verified product-family relationship and a true drop-in replacement. The AD679 shares the AD678 pinout according to Analog Devices, but its resolution and sampling rate differ. Engineers should also review the full manufacturer datasheet, electrical limits, timing, reference requirements, and package details before finalizing a replacement or upgrade. This page synthesizes the verified manufacturer and distributor information, documented upgrade-path data, practical design guidance, and cautious replacement analysis rather than treating every related converter as a drop-in substitute.

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AD679BJ

AD679BJ - 14-Bit 128 kSPS Sampling ADC | Analog Devices

The Analog Devices AD679BJ is a 14-bit, 128 kSPS complete sampling analog-to-digital converter that integrates a high-speed sample-and-hold amplifier, ADC core, 5 V reference, clock generator, and digital interface on a single monolithic chip, supplied in a 44-JLCC (J-leaded ceramic chip carrier, 16.39 x 16.39 mm) package with commercial-grade temperature range. The "J" suffix denotes the side-brazed ceramic 44-JLCC package, while "B" indicates the commercial temperature grade (0 C to +70 C), as confirmed by the Analog Devices AD679 datasheet and DigiKey catalog data. A sampling ADC (also called a data-acquisition ADC or complete-sampling ADC) is a converter that pairs an internal track-and-hold front-end with a quantization core so that the converter can directly digitize fast-changing, wideband input signals without an external SHA. Within the broader semiconductor taxonomy, an ADC falls under data-converter ICs -> mixed-signal ICs -> power-management and signal-chain semiconductors, and the AD679 belongs specifically to the successive-approximation family of medium-speed, high-resolution converters that target instrumentation and signal-processing systems. Key differentiating features of the AD679BJ include its 14-bit resolution with no missing codes, 128 kSPS throughput, internal 5 V buried-zener reference (laser-trimmed for low drift), a self-contained clock, and digital I/O port that allows direct connection to 8-/16-bit microprocessors. The complete integration eliminates the usual SHA and reference support circuitry, reducing board area and design time. The AD679 also shares the same pinout as the 12-bit, 200 kSPS AD678, providing a clear upgrade path. Architecturally, the AD679 uses a multipass successive-approximation register (SAR) conversion technique with a flash sub-ADC, yielding wide dynamic range and low integral nonlinearity. The internal reference is calibrated at the factory, and the analog input stage accepts both unipolar and bipolar input ranges, simplifying front-end signal-conditioning design. Typical applications include medical imaging front-ends, precision industrial data acquisition, multichannel data-acquisition boards, instrumentation front-ends, and radar/digital-beam-forming subsystems. The wide temperature range and MIL-STD-883 screening (available on the /883B suffix variant) also make it attractive in defense and aerospace designs. When designing with this device, allocate adequate decoupling on the analog supply pins and route the analog/digital grounds in a star configuration to avoid corruption of the LSBs at 14-bit resolution; the signal chain below 1 LSB (~305 uV for a 5 V full scale) is highly noise-sensitive. Designers should also note that the AD679 is mature (NRND or close to last-time-buy at Analog Devices), so long-life programs must validate supply continuity up front. This page synthesizes distributor pricing, drop-in alternatives from the AD678/AD774/AD1671 families, and practical design notes not found in the bare datasheet PDF.

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AD679KN

AD679KN - 14-Bit 128 kSPS Sampling ADC | Analog Devices

The Analog Devices AD679KN is a 14-bit, 128 kSPS complete sampling analog-to-digital converter with an integrated sample-and-hold amplifier, microprocessor-compatible bus interface, voltage reference, and clock-generation circuitry. It is packaged in a 28-pin through-hole DIP. The converter is designed for signal-processing systems that require both static accuracy and dynamic performance, including S/N+D ratio, total harmonic distortion, and intermodulation distortion. An ADC is a data-acquisition building block that converts an analog voltage into a digital code. The AD679 belongs to the integrated-circuit hierarchy: ADC, data converter, signal-processing IC, and semiconductor. Its complete sampling architecture reduces the number of external analog components required for a basic measurement channel, while the integrated reference and clock circuitry simplify system design. Analog Devices states that the AD679 shares the same pinout as the AD678 12-bit, 200 kSPS ADC, which can assist upgrade-path planning when board space and interface requirements remain compatible. The principal verified specifications are 14-bit resolution and 128 kSPS throughput. The AD679 family is specified for AC or dynamic parameters, including signal-to-noise plus distortion, THD, and IMD, making it appropriate for waveform capture, instrumentation, communications, and industrial measurement. The verified product data identifies AD679KN as a commercial-temperature, through-hole, 28-pin DIP variant. The manufacturer also documents versions compliant with MIL-STD-883, but the provided data does not establish that the AD679KN suffix itself is that compliant version. The device combines sampling and conversion functions in one monolithic converter. This integration can simplify analog front-end design compared with a discrete sample-and-hold stage followed by a separate ADC. Designers must still establish the input range, acquisition time, reference behavior, digital interface timing, grounding, and signal-conditioning requirements from the complete manufacturer datasheet before finalizing a circuit. Typical applications include industrial process measurement, audio and waveform instrumentation, communications receivers, laboratory data acquisition, and embedded control systems. In each case, the 128 kSPS sampling rate limits the bandwidth that can be represented without aliasing, while the 14-bit code width sets the quantization resolution. Input filtering and anti-alias design are therefore central to obtaining useful dynamic performance. A key design consideration is that the ADC’s dynamic specifications must be interpreted at the operating conditions and test bandwidth specified by Analog Devices. Do not infer guaranteed SNR, THD, input range, or acquisition time from the distributor snippets; consult the official datasheet and validate the complete analog and digital interface on hardware. This page consolidates the verified AD679KN identity, manufacturer upgrade-path information, distributor listing details, and engineering-focused application guidance. It also makes clear where verified data is insufficient, so engineers can request the missing electrical limits before committing to a design.

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AD704TQ/883B

AD704TQ/883B - Quad Picoampere Input Op Amp | Analog Devices

The AD704TQ/883B is a quad, low power bipolar operational amplifier from Analog Devices that achieves the low input bias current of a BiFET amplifier while offering significantly lower input bias current drift over temperature. It is designed for high DC precision applications, featuring a maximum offset voltage of 75 µV, a maximum offset voltage drift of 0.5 µV/°C, and a maximum input bias current of 150 pA. The device operates from dual supplies up to ±18V and is available in a 14-pin ceramic DIP (CDIP) package, qualified to MIL-STD-883B for military and aerospace applications. An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in analog signal conditioning, filtering, and mathematical operations. The AD704TQ/883B is a quad op amp, meaning it contains four independent amplifiers in one package, saving board space and cost. It belongs to the family of precision bipolar op amps, which are distinguished by their low offset voltage, low drift, and low noise, making them suitable for instrumentation and measurement systems. Key features of the AD704TQ/883B include high DC precision with 75 µV maximum offset voltage, 0.5 µV/°C maximum offset voltage drift, and 150 pA maximum input bias current. It also offers low noise of 0.5 µV p-p typical at 10 Hz and low power consumption with a maximum supply current of 600 µA per amplifier. The device is specified for operation over the military temperature range of -55°C to +125°C, and its MIL-STD-883B qualification ensures reliability in harsh environments. The AD704TQ/883B uses superbeta bipolar input transistors to achieve picoampere input bias currents, which are typically associated with BiFET amplifiers but with lower drift. This architecture provides excellent DC accuracy and stability over temperature, making it ideal for precision analog circuits. The quad configuration allows for compact designs in multi-channel systems, reducing component count and improving matching between channels. Typical applications include precision instrumentation, data acquisition systems, active filters, and military/aerospace electronics where high accuracy and reliability are critical. The low input bias current and low drift make it suitable for high-impedance sensor interfaces, such as photodiode amplifiers and pH probe buffers. The wide supply voltage range and low power consumption also enable battery-powered portable instruments. When designing with the AD704TQ/883B, consider the input common-mode voltage range and ensure proper decoupling of the power supplies. The device's low input bias current allows the use of high-value feedback resistors, but care must be taken to minimize leakage currents from PCB contamination. For best performance, use guard rings around the input pins and maintain a clean, low-humidity environment.

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AD7091R-2BRUZ

AD7091R-2BRUZ - 12-Bit 1MSPS SAR ADC | Analog Devices

The AD7091R-2BRUZ from Analog Devices is a 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single 2.7V to 5.25V power supply and achieves a sampling rate of 1 MSPS. It features two single-ended analog input channels, an on-chip 2.5V reference, and a high-speed serial interface (SPI). The device is housed in a 16-lead TSSOP package, making it suitable for space-constrained applications. A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and ease of use, making it ideal for applications such as data acquisition, industrial control, and portable instrumentation. The AD7091R-2 is part of the AD7091R family, which includes 2-, 4-, and 8-channel versions, all sharing the same core architecture and performance characteristics. Key features of the AD7091R-2BRUZ include ultralow power consumption (typically 367 µA at 3V and 1 MSPS), a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 1.5 MHz, and an on-chip conversion clock that simplifies system design. The device also includes a channel sequencer that allows preprogrammed selection of channels to be converted sequentially, enhancing flexibility in multi-channel applications. The AD7091R-2BRUZ uses a SAR architecture with an internal reference and a high-speed serial interface that supports data read after conversion, achieving a 1 MSPS throughput rate with a 50 MHz SCLK. The device is designed for low power and high accuracy, with a typical power dissipation of less than 2 mW at 3V, making it suitable for battery-powered and portable applications. Typical applications include battery monitoring, data acquisition systems, industrial process control, and portable instrumentation. The wide input bandwidth and low power consumption make it ideal for applications requiring high-speed, low-power analog-to-digital conversion. When designing with this device, ensure that the analog input voltage does not exceed the supply voltage and that adequate decoupling capacitors are placed near the power supply pins. The SPI interface should be configured for the correct clock polarity and phase to ensure reliable data transfer.

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AD7091R-4BRUZ

AD7091R-4BRUZ - 4-Ch 12-Bit 1MSPS SAR ADC | Analog Devices

The AD7091R-4BRUZ is a 4-channel, 12-bit, ultralow power, successive approximation (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a single 2.7 V to 5.25 V power supply and achieves a sampling rate of 1 MSPS. The device features an on-chip 2.5 V reference, an on-chip conversion clock, and a high-speed SPI-compatible serial interface. It is available in a 20-lead TSSOP package, making it suitable for space-constrained applications. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD7091R-4BRUZ is a SAR ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and ease of use, making them ideal for a wide range of applications. The AD7091R-4BRUZ is part of the AD7091R family, which includes 2-, 4-, and 8-channel versions, all sharing the same core architecture. Key features of the AD7091R-4BRUZ include ultralow power consumption: normal mode draws only 1.4 mW at 1 MSPS, and power-down mode draws 550 nA typical at VDD = 5.25 V and 435 nA at VDD = 3 V. The device also features a programmable ALERT interrupt pin (on 4- and 8-channel models) for monitoring out-of-range conditions. The on-chip 2.5 V reference eliminates the need for an external reference, simplifying design. The AD7091R-4BRUZ uses a flexible power/throughput rate management scheme, allowing the conversion rate to be adjusted to match the system's needs, thereby optimizing power consumption. The SPI interface supports data read after conversion, achieving a 1 MSPS throughput rate. The device also includes a channel sequencer that allows preprogrammed selection of channels to be converted sequentially, reducing microcontroller overhead. Typical applications include battery-powered instrumentation, portable medical devices, industrial process control, and data acquisition systems. The low power consumption and small package make it ideal for portable and battery-operated equipment. When designing with the AD7091R-4BRUZ, ensure that the analog input voltage does not exceed the supply voltage to avoid damage. Use a low-pass filter on the analog inputs to reduce noise and aliasing. The reference voltage is internally generated, but an external reference can be used if higher accuracy is required.

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AD7091R-5BRUZ

AD7091R-5BRUZ - 12-Bit Ultralow Power ADC | Analog Devices

The AD7091R-5BRUZ is a 12-bit, multichannel, ultralow power, successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates from a single 2.7 V to 5.25 V power supply and typically consumes only 24 µA at a 3 V supply in fast mode, making it ideal for battery-powered and portable applications. The device features four single-ended analog input channels with a channel sequencer, an on-chip conversion clock, and an accurate 2.5 V internal reference. It provides a 2-wire serial interface compatible with I2C, supporting standard and fast modes up to 400 kHz. The AD7091R-5BRUZ is available in a 20-lead TSSOP package, offering a compact solution for space-constrained designs. An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers, enabling digital systems to process real-world signals. The AD7091R-5BRUZ is a SAR (successive approximation register) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and ease of use, making them suitable for a wide range of applications including data acquisition, industrial control, and medical instrumentation. The AD7091R-5BRUZ belongs to the family of data acquisition components, which are essential in bridging the analog and digital domains. Key features of the AD7091R-5BRUZ include its ultralow power consumption of 24 µA at 3 V, which extends battery life in portable devices. The on-chip 2.5 V reference eliminates the need for an external reference, reducing component count and board space. The I2C-compatible interface simplifies connection to microcontrollers and digital signal processors. The device also includes a programmable out-of-bounds user alert function, which can be used to monitor analog inputs and generate interrupts when values exceed preset thresholds. The channel sequencer allows automatic conversion of multiple channels without microcontroller intervention, reducing software overhead. From a technical perspective, the AD7091R-5BRUZ achieves a throughput of up to 1 MSPS with a 50 MHz SCLK, although the I2C interface limits the actual conversion rate to about 22.22 kSPS in fast mode. The device operates over a temperature range of -40°C to +125°C, making it suitable for industrial environments. The TSSOP-20 package has a thermal resistance of approximately 90°C/W, and the device is RoHS compliant. The internal reference has a typical accuracy of ±0.1% and a temperature coefficient of 10 ppm/°C, ensuring stable performance over temperature. Typical applications include portable instrumentation, battery monitoring, temperature sensing, and industrial process control. In portable medical devices, the ultralow power consumption is critical for extending battery life. In industrial settings, the wide operating temperature range and I2C interface make it easy to integrate with existing control systems. The AD7091R-5BRUZ is also suitable for data acquisition systems where multiple analog channels need to be monitored with minimal power consumption. When designing with the AD7091R-5BRUZ, it is important to ensure proper decoupling of the power supply pins with 0.1 µF and 10 µF capacitors. The reference pin should be bypassed with a 1 µF capacitor to ensure stable operation. The I2C bus requires pull-up resistors, typically 4.7 kΩ, to VDRIVE. For optimal performance, keep the analog input traces short and shielded from digital noise.

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AD7091R-5BRUZ-RL7

AD7091R-5BRUZ-RL7 - 4-Ch 12-Bit I2C ADC | Analog Devices

The AD7091R-5BRUZ-RL7 is a 12-bit, multichannel, ultralow power, successive approximation analog-to-digital converter (ADC) from Analog Devices. It operates from a single 2.7 V to 5.25 V power supply and typically consumes only 24 µA at a 3 V supply in fast mode. The device provides a 2-wire serial interface compatible with I2C interfaces, making it ideal for space-constrained, battery-powered applications. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD7091R-5 is a SAR (successive approximation register) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power, and small size, making them suitable for a wide range of applications from industrial process control to portable medical devices. As a data converter, it sits within the broader category of mixed-signal ICs, bridging the analog and digital domains. Key features include four single-ended analog input channels, an on-chip accurate 2.5 V reference, a channel sequencer for preprogrammed channel selection, and a programmable out-of-bounds user alert function. The device also features an on-chip conversion clock, eliminating the need for an external clock source. The I2C interface supports standard, fast, and high-speed modes, with a maximum throughput of 1 MSPS. The AD7091R-5 uses a low-power architecture that minimizes current consumption, with a typical supply current of 24 µA at 3 V in fast mode. The device includes a power-down mode that reduces current to less than 1 µA, extending battery life in portable applications. The internal reference provides a stable 2.5 V output, and the device can also operate with an external reference if required. Typical applications include battery monitoring, portable instrumentation, medical devices, and industrial process control. The I2C interface simplifies connection to microcontrollers and digital signal processors, while the small 20-lead TSSOP package saves board space. The device is specified over the industrial temperature range of -40°C to +125°C. When designing with this ADC, ensure that the analog input voltage does not exceed the supply voltage to avoid damage. Use a decoupling capacitor on the reference pin to maintain accuracy. The I2C address is set by the ADDR pin, allowing multiple devices on the same bus.

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AD7124-4BBCPZ-RL7

AD7124-4BBCPZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices

The AD7124-4BBCPZ-RL7 is a low power, low noise, completely integrated analog front end for high precision measurement applications from Analog Devices. It contains a low noise, 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) and can be configured to have four differential inputs or seven single-ended or pseudo differential inputs. The device operates from a 2.7 V to 3.6 V analog supply and a 1.8 V to 3.6 V digital supply, with a maximum output data rate of 19.2 kSPS. It is available in a 32-lead LFCSP (5x5 mm) package, making it suitable for space-constrained industrial and instrumentation designs. A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution, typically 16 to 24 bits. It is widely used in precision measurement applications where low noise and high accuracy are critical, such as temperature sensing, pressure measurement, and process control. The AD7124-4 belongs to the ADC family, specifically the precision sigma-delta ADC category, which is part of the broader data converter and analog front-end hierarchy. Key features of the AD7124-4BBCPZ-RL7 include a programmable gain amplifier (PGA) with gains from 1 to 128, a precision low drift internal band gap reference, and an external differential reference that can be internally buffered. The device offers three power modes (low, mid, and full) to optimize power consumption versus noise performance, with a typical current consumption of 350 µA in low power mode. It also includes a 50 Hz/60 Hz rejection filter, a 24-bit resolution, and an SPI-compatible serial interface. The AD7124-4 integrates a complete signal chain, including a multiplexer, PGA, sigma-delta modulator, digital filter, and reference, reducing external component count and simplifying design. The device supports both internal and external references, and its digital filter provides programmable output data rates and settling times. The ADC is designed for high precision measurement applications, offering excellent noise performance with a typical RMS noise of 1.5 µV at a gain of 128 and an output data rate of 25 SPS. Typical applications include smart transmitters, process control input modules, temperature and pressure measurement, and low power or battery-operated instrumentation. The AD7124-4 is also suitable for weigh scales, strain gauge sensors, and thermocouple or RTD measurements. Its low power consumption and high resolution make it ideal for portable and remote sensing applications. When designing with the AD7124-4, it is important to provide adequate decoupling on the AVDD and DVDD supplies and to place the reference decoupling capacitor close to the REFIN pins. The device's power mode should be selected based on the required noise performance and power budget, as higher power modes offer lower noise but increased current consumption.

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AD7124-4BRUZ

AD7124-4BRUZ - 24-Bit Sigma-Delta ADC with PGA | Analog Devices

The Analog Devices AD7124-4BRUZ is a low power, low noise, completely integrated 24-bit sigma-delta analog front end (AFE) ADC that can be configured for 4 differential inputs or 7 single-ended or pseudo-differential inputs, housed in a 24-lead TSSOP package. A sigma-delta (Σ-Δ) analog-to-digital converter is a type of ADC that oversamples the input signal and applies digital filtering to achieve very high resolution, typically 16 to 32 bits, making it the dominant architecture for precision measurement. Within the signal chain hierarchy, the AD7124-4 sits at the highest integration level: it combines the ADC, a programmable gain amplifier (PGA), a precision low-drift internal band gap reference, reference buffering, excitation current sources, and a flexible digital filter in a single power-management-friendly device. Key features include the 24-bit resolution sigma-delta core, an integrated PGA that amplifies small sensor signals directly, an internal precision band gap reference that removes the need for an external reference in many designs, and a power mode architecture that lets designers trade current consumption against noise and speed. The device also accepts an external differential reference which can be internally buffered, further simplifying high-accuracy designs. Architecturally, the AD7124-4 establishes a high degree of signal chain integration: the low-noise PGA, reference buffers, and digital filtering are all on-chip, so a thermocouple, RTD, or bridge sensor can often be connected directly to the analog input pins. The digital interface is a standard SPI-compatible serial port with a DOUT/RDY multifunction pin, allowing simple connection to any microcontroller. Multiple filter options allow output data rate and 50 Hz/60 Hz rejection to be tuned in firmware. Typical applications include RTD and thermocouple temperature measurement, pressure and weigh-scale bridge transducers, process control analog inputs, portable instrumentation, and smart transmitters where low power and high resolution are simultaneously required. A key design consideration is the power mode selection: the lowest power mode maximizes battery life but increases rms noise and reduces available output data rates, so noise versus power must be balanced per application. This page synthesizes distributor sourcing data, verified drop-in alternatives, and practical design guidance not consolidated in the manufacturer datasheet.

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AD7124-4BRUZ

AD7124-4BRUZ - 24-Bit Sigma-Delta ADC | Analog Devices

The AD7124-4BRUZ is a low power, low noise, completely integrated analog front end for high precision measurement applications from Analog Devices. It contains a 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC) with a programmable gain amplifier (PGA) and an internal reference. The device can be configured to have four differential inputs or seven single-ended or pseudo differential inputs, making it highly flexible for various sensor and measurement applications. It is available in a 24-lead TSSOP package, operating over a temperature range of -40°C to +125°C. An analog-to-digital converter (ADC) is a device that converts a continuous analog signal into a discrete digital representation. The AD7124-4 is a sigma-delta ADC, which uses oversampling and noise shaping to achieve high resolution and excellent noise performance. It is part of the precision ADC family, which is essential in applications requiring accurate measurement of physical quantities such as temperature, pressure, and strain. The AD7124-4 integrates key signal chain components, including a PGA, reference, and excitation current sources, reducing external component count and simplifying design. Key features of the AD7124-4BRUZ include a 24-bit resolution, low noise performance, and low power consumption. It offers a maximum output data rate of 19.2 kSPS, with programmable gain from 1 to 128. The device includes an internal band gap reference with low drift, and also accepts an external differential reference. It supports SPI communication, and includes diagnostic functions such as open-circuit detection and overvoltage monitoring. The AD7124-4 is recommended for new designs, with a 1ku list price starting from $6.55. The AD7124-4 uses a sigma-delta architecture with a digital filter, providing high resolution and rejection of out-of-band noise. The PGA allows direct connection of low-level sensors, such as thermocouples and strain gauges, without additional amplification. The device operates from a 2.7V to 3.6V analog supply and a 1.8V to 3.6V digital supply, with a typical current consumption of 1.2 mA in full power mode. The internal reference has a typical drift of 10 ppm/°C, ensuring stable measurements over temperature. Typical applications include temperature measurement with RTDs and thermocouples, pressure measurement with bridge sensors, and industrial process control. The AD7124-4 is also suitable for battery-powered portable instruments due to its low power consumption. Its integrated excitation current sources simplify RTD and thermocouple biasing, while the PGA and reference reduce external component count. When designing with the AD7124-4, ensure proper decoupling of the AVDD and DVDD supplies, and place the reference decoupling capacitor close to the REF pin. The SPI interface should be isolated if the ADC is used in noisy industrial environments. The device supports both internal and external references, and the choice depends on the required accuracy and temperature drift.

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AD7124-4BRUZ-RL

AD7124-4BRUZ-RL - 24-Bit Sigma-Delta ADC | Analog Devices

The AD7124-4BRUZ-RL is a low power, low noise, completely integrated analog front end for high precision measurement applications from Analog Devices. It contains a low noise, 24-bit sigma-delta analog-to-digital converter (ADC) and can be configured to have four differential inputs or seven single-ended or pseudo differential inputs. The device operates from a 2.7V to 3.6V analog supply and a 1.8V to 3.6V digital supply, with a typical current consumption of 1.2 mA in full power mode. It is available in a 24-lead TSSOP package, making it suitable for space-constrained industrial and instrumentation designs. An analog-to-digital converter (ADC) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal. The AD7124-4 is a sigma-delta ADC, which uses oversampling and noise shaping to achieve high resolution and excellent noise performance. It is part of the broader category of data acquisition systems, which are essential in bridging the analog world to digital processing. The AD7124-4 integrates a programmable gain amplifier (PGA), a precision voltage reference, and a temperature sensor, reducing the need for external components and simplifying the signal chain. Key features of the AD7124-4 include a 24-bit resolution, a maximum output data rate of 19.2 kSPS, and a root mean square (RMS) noise of 1.8 uV at a gain of 128 and an output data rate of 25 SPS. The device offers three power modes (full, mid, and low power) to optimize power consumption versus performance, with a current consumption of 1.2 mA, 0.6 mA, and 0.3 mA respectively. It also features a 50 Hz/60 Hz rejection mode, which is critical for industrial applications where power line interference is common. The integrated PGA provides gains from 1 to 128, allowing direct connection to low-level sensors such as thermocouples and strain gauges. The AD7124-4 uses a sigma-delta modulator with a digital filter, providing high resolution and excellent linearity. The device includes a 24-bit register map for configuration and data readback, and it communicates via a serial peripheral interface (SPI) that is compatible with 3-wire or 4-wire operation. The internal reference has a typical drift of 5 ppm/°C, ensuring stable measurements over temperature. The device also includes a burnout current source and a diagnostic function that can detect open or shorted sensor inputs, enhancing system reliability. Typical applications include smart transmitters, process control input modules, low power or battery operated instrumentation, and temperature measurement systems. The AD7124-4 is also suitable for pressure and strain gauge measurements, where its low noise and high gain are essential. The device is recommended for new designs and is available in a tape and reel package (RL suffix) for automated assembly. When designing with the AD7124-4, it is important to provide a clean analog supply and a stable reference. The device requires a 100 nF decoupling capacitor on the AVDD and DVDD pins, and a 1 uF capacitor on the REFOUT pin. The SPI interface should be isolated from noisy digital circuits to maintain the ADC's noise performance. The device also supports a power-down mode, which can be used to conserve power in battery-operated systems.

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AD7124-4BRUZ-RL7

AD7124-4BRUZ-RL7 - 24-Bit Sigma-Delta ADC | Analog Devices

The AD7124-4BRUZ-RL7 is a low power, low noise, completely integrated analog front end for high precision measurement applications from Analog Devices. It contains a low noise, 24-bit sigma-delta analog-to-digital converter (ADC) and can be configured to have 4 differential inputs or 7 single-ended or pseudo differential inputs. The device operates from a 2.7V to 3.6V analog supply and a 1.8V to 3.6V digital supply, with a maximum output data rate of 19.2 kSPS. It includes an integrated programmable gain amplifier (PGA) with gains from 1 to 128, an internal band gap reference, and an external differential reference option. The AD7124-4 is available in a 24-lead TSSOP package, making it suitable for space-constrained designs. An analog-to-digital converter (ADC) is a device that converts continuous analog signals into discrete digital numbers. The sigma-delta ADC architecture uses oversampling and noise shaping to achieve high resolution, making it ideal for precision measurement applications. The AD7124-4 is part of the ADC family, specifically a high-resolution, low-power sigma-delta converter, which is a key component in data acquisition systems, sensor interfaces, and industrial process control. Key features of the AD7124-4BRUZ-RL7 include a 24-bit resolution, low noise performance (RMS noise as low as 1.8 uV at a gain of 128), and low power consumption (typically 1.1 mA in full power mode). The device also offers a 50 Hz/60 Hz rejection mode, a 24-bit sigma-delta modulator, and a flexible SPI interface. The integrated PGA allows direct connection to low-level sensors such as thermocouples, RTDs, and strain gauges, eliminating the need for external amplification. The AD7124-4 uses a sigma-delta modulator with a digital filter, providing excellent noise performance and linearity. The device includes a precision, low noise, low drift internal band gap reference, and also accepts an external differential reference, which can be internally buffered. The ADC supports multiple power modes (full, mid, and low power) to optimize power consumption versus performance. The device is specified over the -40°C to +125°C temperature range, making it suitable for industrial and automotive applications. Typical applications include temperature measurement (thermocouples, RTDs, thermistors), pressure measurement, flow measurement, and industrial process control. The AD7124-4 is also used in battery-powered instrumentation, portable medical devices, and smart transmitters. Its low power consumption and high resolution make it ideal for loop-powered applications. When designing with the AD7124-4, ensure proper decoupling of the AVDD and DVDD supplies with 0.1 uF and 10 uF capacitors. The reference input should be bypassed with a 1 uF capacitor. For best noise performance, use a low-noise external reference if the internal reference is not sufficient. The SPI interface should be isolated if the ADC is used in noisy industrial environments.

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AD7124-8BCPZ

AD7124-8BCPZ - 24-Bit Sigma-Delta AFE, 8-Ch, PGA | Analog Devices

The Analog Devices AD7124-8BCPZ is a low-power, low-noise, completely integrated analog front end for high-precision measurement applications. This 24-bit sigma-delta analog-to-digital converter (ADC) integrates a programmable gain amplifier (PGA), a precision internal bandgap reference, and a flexible input multiplexer supporting 8 differential or 15 pseudo-differential channels, all in a 32-lead LFCSP (5x5 mm) package. It operates from a 2.7V to 3.6V supply (with AVDD tolerant to 5V on selected rails) and delivers output data rates up to 19.2 kSPS through a 4-wire SPI interface. An analog-to-digital converter is a mixed-signal device that converts continuous analog signals into discrete digital codes, and a sigma-delta ADC is one of the most accurate architectures, using oversampling and noise-shaping to push quantization noise out of the signal band. Within the data converter hierarchy, the AD7124-8 is not just an ADC - it is a complete analog front end (AFE) that combines the modulator, digital filter, PGA, and reference into a single die, placing it above simple SAR or stand-alone sigma-delta converters in system integration. By eliminating the external precision reference and most of the input signal conditioning, the AD7124-8 collapses the typical sensor-measurement signal chain into a single device. Key features include 24-bit resolution, RMS noise as low as 1.8 uV at the 25 SPS output data rate, typical full-power-mode current of 1.2 mA, a programmable output data rate from 1.17 SPS to 19.2 kSPS, and an integrated PGA with gains from 1 to 128 for direct connection to low-level sensors such as thermocouples and strain gauges. Three user-programmable power modes (full, mid, low) allow designers to trade off noise against supply current at the system level. Architecturally, the second-order sigma-delta modulator feeds a configurable digital filter, and the device offers simultaneous-50Hz/60Hz-rejection modes for industrial instrumentation. The 24-bit register map and SPI-compatible serial interface simplify integration with microcontrollers and DSPs. Typical applications include direct thermocouple and RTD temperature measurement, weigh scales, pressure and flow transmitters, industrial process-control analog input modules, and battery-cell monitoring. A design tip: bypass AVDD and DVDD with separate 10 uF and 0.1 uF capacitors, use a clean analog ground plane, and populate REFIN+/FOUT inputs with a 10 uF capacitor to keep reference noise below the ADC noise floor. Prices are referenced as of 2026-10-06 from distributor stock.

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AD7124-8BCPZ-RL7

AD7124-8BCPZ-RL7 - 24-Bit 8/15-Ch Sigma-Delta ADC | ADI

The Analog Devices AD7124-8BCPZ-RL7 is a low-power, low-noise, completely integrated analog front end for high-precision measurement applications, delivering 24-bit sigma-delta conversion with up to 8 differential or 15 single-ended/pseudo-differential input channels. Housed in a 32-lead LFCSP (5 mm x 5 mm) package, the device integrates a precision low-noise bandgap reference, a programmable gain amplifier (PGA), and an output data rate up to 19.2 kSPS, making it well suited for direct interfacing with strain gauges, RTDs, thermocouples, and other low-level sensor bridges. An ADC (Analog-to-Digital Converter) is a data-converter integrated circuit that translates a continuous analog voltage or current into a discrete digital code; the sigma-delta topology used here oversamples the input at a high modulator rate and uses digital filtering to push quantization noise out of the signal band, yielding excellent effective resolution at low update rates. The AD7124-8 belongs to the precision ADC family, a sub-category of data converters, sitting below broader mixed-signal and power-management ICs in the signal-chain hierarchy. This integrated front-end collapses what used to require a separate ADC, PGA, reference, and excitation source into a single chip, reducing board area and design complexity for industrial instrumentation. Key features of the AD7124-8BCPZ-RL7 include 24-bit resolution with 20-bit noise-free code (typical) at low output data rates, integrated PGA with gains from 1 to 128, three power modes (full, mid, low) that scale current consumption from roughly 350 uA down to under 100 uA, an integrated low-drift bandgap reference (10 ppm/C typical), and support for both internal and external clocking. The device also offers digital filtering with simultaneous 50 Hz/60 Hz notch options, a burnout current source for sensor health diagnostics, and multiple SPI/QSPI/MICROWIRE-compatible serial interfaces. Architecturally, the AD7124-8 uses a fourth-order sigma-delta modulator followed by a flexible digital filter block; channel sequencing is fully programmable, and per-channel calibration (offset and gain) is performed on-chip. The 32-LFCSP package provides a low thermal resistance path and an exposed pad that must be soldered to the PCB ground plane for thermal and electrical performance. Typical applications include smart industrial transmitters (pressure, temperature, flow), process-control input modules, weigh scales, strain-gauge signal conditioning, medical instrumentation such as patient monitors, and battery-powered sensor nodes where the low-power mode extends operating life. The wide supply range (2.7 V to 3.6 V analog, 1.65 V to 3.6 V digital) and integrated diagnostics make it attractive for safety-critical and IEC 61508-style systems. When designing with the AD7124-8BCPZ-RL7, pay attention to the LFCSP exposed-pad layout (must be soldered to a continuous ground plane) and follow the recommended decoupling scheme of a 1 uF plus a 0.1 uF capacitor on each supply pin; also note that the -RL7 suffix indicates a 7-inch reel packing rather than a different silicon variant. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet page.

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AD7172-2BRUZ

AD7172-2BRUZ - 24-Bit Sigma-Delta ADC | Analog Devices

The AD7172-2BRUZ is a low power, 24-bit, 31.25 kSPS, sigma-delta analog-to-digital converter (ADC) from Analog Devices. It features true rail-to-rail analog and reference input buffers, integrated digital filtering, and a flexible SPI interface. The device operates from a 2.5 V to 5.5 V supply and is available in a 24-lead TSSOP package. A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is ideal for precision measurement applications where low noise and high accuracy are required. The AD7172-2 belongs to the family of sigma-delta ADCs, which are widely used in industrial process control, medical instrumentation, and weigh scales. Key features include 24-bit resolution, 31.25 kSPS output data rate, 2 fully differential or 4 single-ended input channels, true rail-to-rail buffers, and a programmable digital filter. The device also offers a 50 Hz/60 Hz rejection mode, offset and gain calibration, and a 2.5 V internal reference. The integrated buffers simplify the interface to high-impedance sensors. The AD7172-2 uses a sigma-delta modulator with a digital filter that can be configured for various output data rates and settling times. The device includes a multiplexer that allows each analog input to be configured independently. The SPI interface supports read/write access to the configuration registers and conversion results. Typical applications include temperature measurement, pressure sensing, weigh scales, and industrial process control. The low power consumption and high resolution make it suitable for battery-powered and portable instruments. When designing with the AD7172-2, ensure that the reference input is properly decoupled and that the analog input signals are within the common-mode range. The device requires an external reference for best performance, such as the ADR445 or ADR444.

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