Integrated Circuits

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Products (38,000+)

AD7766-2BRUZ - 24-Bit 32kSPS ADC | Analog Devices
AD7766-2BRUZ

AD7766-2BRUZ - 24-Bit 32kSPS ADC | Analog Devices

The AD7766-2BRUZ is a high-performance, 24-bit, oversampled successive approximation (SAR) analog-to-digital converter (ADC) from Analog Devices. It delivers a dynamic range of 115.5 dB at a 32 kSPS output data rate while consuming only 8.5 mW of power, making it ideal for high-resolution, low-power data acquisition systems. The device is housed in a compact 16-lead TSSOP package, enabling space-constrained designs. An oversampled SAR ADC combines the benefits of a traditional SAR architecture with oversampling techniques to achieve high dynamic range and input bandwidth. Unlike delta-sigma ADCs, which use noise shaping and require digital filters, the AD7766-2 uses a successive approximation register with an oversampling ratio to reduce quantization noise and improve signal-to-noise ratio. This architecture provides a balance between resolution, speed, and power consumption, making it suitable for applications where both accuracy and efficiency are critical. Key features of the AD7766-2BRUZ include a 24-bit resolution, 32 kSPS output data rate, 115.5 dB dynamic range, and a low power consumption of 8.5 mW. The device operates from a single 2.5 V supply (2.375 V to 2.625 V) and features a serial interface with MSB-first, twos complement output format. It also includes an internal oscillator option and a power-down mode for further power savings. The AD7766-2BRUZ uses an oversampled SAR architecture that achieves high performance without the latency of delta-sigma converters. The device includes a precision reference and a track-and-hold amplifier, ensuring accurate conversion of input signals. The serial interface is SPI-compatible, allowing easy integration with microcontrollers and DSPs. The device also features a SYNC pin for synchronization in multi-channel systems. Typical applications include vibration monitoring, industrial process control, medical instrumentation, and high-precision data acquisition systems. The high dynamic range and low power make it particularly suitable for battery-powered portable instruments and sensor interfaces. When designing with the AD7766-2BRUZ, ensure a clean, low-noise power supply and proper decoupling to achieve the specified dynamic range. The reference input should be bypassed with a low-ESR capacitor, and the analog input should be driven with a low-impedance source to maintain accuracy.

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AD7766BRUZ - 24-Bit Oversampled SAR ADC | Analog Devices
AD7766BRUZ

AD7766BRUZ - 24-Bit Oversampled SAR ADC | Analog Devices

The AD7766BRUZ is a high-performance, 24-bit, oversampled successive approximation (SAR) analog-to-digital converter (ADC) from Analog Devices. It is part of the AD7766 family, which includes the AD7766, AD7766-1, and AD7766-2 variants, each offering different sample rates and power consumption levels. The AD7766BRUZ specifically operates at 128 kSPS with a dynamic range of 109.5 dB and consumes only 8.5 mW, making it ideal for low-power, high-resolution data acquisition systems. The device is housed in a 16-lead TSSOP package and operates from a 2.5 V supply with a 5 V reference. An oversampled SAR ADC is a type of analog-to-digital converter that combines the benefits of a successive approximation register (SAR) architecture with oversampling techniques to achieve high resolution and excellent noise performance. Unlike traditional SAR ADCs, which sample at the Nyquist rate, oversampled SAR ADCs sample at a much higher rate and use digital filtering to improve the signal-to-noise ratio (SNR) and dynamic range. This makes them particularly suitable for applications requiring high accuracy and low noise, such as precision instrumentation, medical devices, and industrial control systems. The AD7766BRUZ falls under the broader category of data converters, which are essential components in any mixed-signal system. Key features of the AD7766BRUZ include a 24-bit resolution, a dynamic range of 109.5 dB, and a total harmonic distortion (THD) of -112 dB. The device also features an oversampled SAR architecture that provides high performance with low power consumption. The AD7766BRUZ includes an SDI pin that allows for daisy-chaining multiple devices, enabling easy expansion in multi-channel systems. The device operates from a 2.5 V supply and uses a 5 V reference, which simplifies power supply design. The AD7766BRUZ is designed for applications that require high-resolution, low-noise analog-to-digital conversion with minimal power consumption. Its oversampled SAR architecture provides excellent AC and DC accuracy, making it suitable for precision measurement and control systems. The device's low power consumption of 8.5 mW makes it ideal for battery-powered and portable applications. Typical applications for the AD7766BRUZ include precision data acquisition systems, medical instrumentation, industrial process control, and vibration analysis. The device's high dynamic range and low noise make it well-suited for applications where signal integrity is critical. Additionally, the daisy-chain capability allows for easy integration into multi-channel systems. When designing with the AD7766BRUZ, it is important to ensure proper decoupling of the power supply and reference pins. A clean, low-noise reference voltage is essential for achieving the specified dynamic range. Additionally, the input signal should be properly conditioned to avoid aliasing and to ensure optimal performance.

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AD7768-1BCPZ - 24-Bit 1.024 MSPS Sigma-Delta ADC | Analog Devices
AD7768-1BCPZ

AD7768-1BCPZ - 24-Bit 1.024 MSPS Sigma-Delta ADC | Analog Devices

The Analog Devices AD7768-1BCPZ is a single-channel, 24-bit sigma-delta analog-to-digital converter with a 1.024 MSPS output data rate and a 28-lead LFCSP package measuring 5 mm by 4 mm. It combines a sigma-delta modulator and digital filter for precision conversion of both AC and DC signals. The verified product listing identifies the AD7768-1 as a low-power, high-performance converter designed for measurement systems where resolution, noise performance, and flexible filtering are important. A sigma-delta ADC is a data-converter type that uses oversampling, noise shaping, and digital filtering to obtain high-resolution results from low-resolution internal converters. In the broader electronics hierarchy, a sigma-delta ADC belongs to the ADC/DAC category, then to precision data converters, analog-to-digital converters, and ultimately semiconductor signal-processing devices. Its strengths are high resolution and strong performance for slowly changing or bandwidth-limited signals; its trade-offs include latency and a conversion rate determined by the digital filter and output-data-rate settings. The AD7768-1 is the single-channel member of the AD7768 family. Analog Devices describes it as a precision 24-bit ADC for precision conversion of AC and DC signals. The verified distributor data specifies a 1.024 MSPS conversion capability, one analog input, one sigma-delta conversion channel, a serial interface, and a 28-LFCSP package with exposed-pad construction. These features suit instrumentation, sensor acquisition, industrial monitoring, and test systems where a filtered measurement is preferred over a high-rate flash-conversion waveform capture. The converter’s digital filter is central to its operation. The manufacturer page identifies selectable power modes for trading output-data-rate and bandwidth against power consumption in the related AD7768 family documentation. For the AD7768-1, filtering and decimation help suppress out-of-band noise, while the serial interface transfers filtered conversion results to a controller or FPGA. System designers should verify the exact data rate, filter mode, clocking, supply arrangement, and digital timing against the manufacturer datasheet before finalizing a PCB. Typical uses include precision bridge or sensor measurement, low-level DC voltage acquisition, laboratory instrumentation, industrial process monitoring, and embedded measurement systems. The ADC is not a general-purpose high-speed waveform ADC: input bandwidth and filter latency should be checked against the signal dynamics. A front-end amplifier, reference circuit, protection network, and suitable grounding are usually needed to preserve accuracy. For layout, place input, reference, digital-interface, and decoupling connections according to the Analog Devices datasheet and recommended application guidance. Pay particular attention to the exposed thermal pad, analog supply routing, reference noise, and return paths. The verified data does not provide complete electrical limits, pricing, pin names, or alternate equivalent parts, so those fields are explicitly marked for validation rather than inferred. This page combines the verified Analog Devices product description, distributor package and speed information, source traceability, and engineering-oriented selection guidance. It is intended to help engineers identify whether the AD7768-1BCPZ matches a 24-bit single-channel precision-conversion requirement before requesting quotation, checking stock, or downloading the authoritative datasheet.

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AD7768-1BSTZ - 24-bit Sigma-Delta Precision ADC | Analog Devices
AD7768-1BSTZ

AD7768-1BSTZ - 24-bit Sigma-Delta Precision ADC | Analog Devices

The Analog Devices AD7768-1BSTZ is a low-power, high-performance 24-bit sigma-delta (Σ-Δ) analog-to-digital converter with an integrated modulator and digital filter, delivering precision conversion of both AC and DC signals at up to 256 kSPS in a 64-lead LQFP (10x10 mm) package. The AD7768-1 is the single-channel version of the AD7768 8-channel simultaneous-sampling ADC family from Analog Devices. A sigma-delta ADC is a type of analog-to-digital converter that oversamples the input signal with a 1-bit modulator and then applies on-chip digital filtering and decimation to produce a high-resolution output. In the precision measurement hierarchy, it sits above general-purpose SAR ADCs for dynamic-range-critical tasks, making it a core building block of industrial data acquisition (DAQ) systems and instrumentation front ends. Key features include 24-bit resolution, a flexible decimation-rate digital filter enabling bandwidth/data-rate trade-offs, three selectable power modes that let designers optimize noise versus power consumption, and a reusable DAQ footprint for both isolated and non-isolated designs. According to Analog Devices, this establishes a new industry benchmark in combined AC and DC performance, allowing one hardware design to span multiple measurement variants. Technically, the AD7768-1 combines a high-order Σ-Δ modulator with an on-chip sinc filter, providing excellent linearity and dynamic range for precision signal chains. Programmable power modes scale modulator clocking to match noise targets against power dissipation, which is valuable in battery-powered and high-density multichannel modules. The single-channel architecture simplifies layouts for one-channel precision front ends while keeping register-level compatibility with the AD7768 family. Typical applications include dynamic signal analysis, power quality monitoring, vibration and acoustic sensing, precision instrumentation, and industrial DC-to-204 kHz measurement systems requiring a 24-bit sigma-delta converter. Design considerations: choose the decimation filter settings and power mode early, since output data rate, input bandwidth, and supply current are interdependent; ensure clean, low-noise reference and analog supplies for full dynamic-range performance. This page synthesizes distributor data, same-family alternatives, pricing tiers, and practical design notes not found in the manufacturer datasheet.

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AD7768-4BSTZ - 24-Bit 4-Ch Simultaneous ADC | Analog Devices
AD7768-4BSTZ

AD7768-4BSTZ - 24-Bit 4-Ch Simultaneous ADC | Analog Devices

The AD7768-4BSTZ is a 24-bit, 4-channel, simultaneous sampling analog-to-digital converter (ADC) from Analog Devices, featuring a maximum output data rate of 256 kSPS and a wideband input bandwidth of 110.8 kHz. Housed in a 64-lead LQFP (10x10 mm) package, this sigma-delta ADC is designed for high-performance measurement applications requiring low power and high accuracy. An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD7768-4 is a sigma-delta ADC, which uses oversampling and noise shaping to achieve high resolution and excellent noise performance. It belongs to the family of precision data converters, specifically simultaneous sampling ADCs, which capture multiple channels at the exact same instant, essential for applications like power monitoring and vibration analysis. Key features of the AD7768-4BSTZ include three power modes (fast, median, and low power) that allow the user to trade off input bandwidth, output data rate, and power dissipation. It offers a wideband low-pass filter with ±0.005 dB pass-band ripple and 105 dB stop-band attenuation at the Nyquist frequency. The device operates from a 2.5 V analog supply and a 2.5 V to 3.3 V digital interface supply, with a typical power dissipation of 27.5 mW in low power mode. The AD7768-4 uses a sigma-delta modulator with a digital decimation filter, providing a flexible digital interface (SPI) for configuration and data readout. It includes an internal reference buffer and supports both differential and single-ended inputs. The device is specified over the industrial temperature range of -40°C to +105°C. Typical applications include power line monitoring, vibration analysis, motor control, and multi-phase energy metering. Its simultaneous sampling capability and high accuracy make it ideal for systems requiring precise phase alignment between channels. When designing with the AD7768-4, ensure proper decoupling of the analog and digital supplies, and use a low-jitter master clock to achieve the specified SNR. The power mode selection should be optimized based on the required bandwidth and power budget.

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AD7768-4BSTZ-RL - 24-Bit 4-Ch ADC, 256kSPS | Analog Devices
AD7768-4BSTZ-RL

AD7768-4BSTZ-RL - 24-Bit 4-Ch ADC, 256kSPS | Analog Devices

The AD7768-4BSTZ-RL from Analog Devices is a 24-bit, 4-channel, simultaneous sampling sigma-delta (Σ-Δ) analog-to-digital converter (ADC) in a 64-lead LQFP (10x10 mm) package. It achieves 108 dB dynamic range at a maximum input bandwidth of 110.8 kHz, with a maximum output data rate of 256 kSPS per channel. The device integrates a Σ-Δ modulator and digital filter per channel, enabling synchronized sampling of ac and dc signals. 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 ADC family, which converts analog signals to digital for processing in microcontrollers, DSPs, and FPGAs. Sigma-delta ADCs are preferred for precision measurement applications due to their excellent linearity and noise performance. Key features include three power modes (fast, median, low power) that allow trade-offs between input bandwidth, output data rate, and power dissipation. The AD7768-4 supports a wide input voltage range and provides a flexible digital interface with both SPI and parallel output options. It also features a low-pass digital filter with programmable decimation, enabling users to optimize for noise and bandwidth. The AD7768-4 uses a high-performance analog front-end with a precision reference and internal oscillator, reducing external component count. Its simultaneous sampling capability ensures accurate phase matching across channels, critical for multi-phase power monitoring and vibration analysis. The device operates from a 2.5 V analog supply and a 1.8 V digital supply, with power dissipation scaling with mode. Typical applications include power quality monitoring, vibration analysis, motor control, and data acquisition systems. The AD7768-4 is ideal for industrial automation, energy metering, and test and measurement equipment where high accuracy and synchronized multi-channel sampling are required. When designing with this ADC, ensure proper decoupling of the analog and digital supplies and use a low-noise reference to achieve the specified dynamic range. The digital filter settings should be configured to match the desired bandwidth and output data rate.

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AD7770ACPZ - 8-Ch 24-Bit 32kSPS Simultaneous-Sampling Sigma-Delta ADC | ADI
AD7770ACPZ

AD7770ACPZ - 8-Ch 24-Bit 32kSPS Simultaneous-Sampling Sigma-Delta ADC | ADI

The Analog Devices AD7770ACPZ is an 8-channel, 24-bit, simultaneous-sampling sigma-delta analog-to-digital converter (ADC) with integrated programmable gain amplifiers (PGAs), delivering up to 32 kSPS output data rate per channel in a 64-pin LFCSP (9x9 mm) package. Each of the eight channels features a PGA with selectable gains of 1, 2, 4, and 8, low DC input current of ±4 nA (differential) and ±8 nA (single-ended), and supports both single-ended and true differential inputs for direct sensor connection. An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog signals into discrete digital codes, sitting in the signal chain hierarchy between sensors/front-ends and digital processors or MCUs. The AD7770 belongs to the precision sigma-delta ADC sub-category, which trades conversion speed for very high effective resolution by oversampling and digital filtering; within that sub-category it is a multi-channel simultaneous-sampling part, meaning all eight cores convert at the same instant, preserving phase information critical for three-phase power, vibration, and biomedical instrumentation. Key differentiating features include a sample rate converter (SRC) enabling coherent sampling with resolution up to 15.2×10⁻⁶ SPS, a low-latency sinc³ filter path, on-chip per-channel PGAs, and very low input current that allows direct connection to current-sense transformers, shunt resistors, and piezoelectric sensors without loading effects. These features minimize external signal-conditioning components. Technically, the AD7770 integrates eight independent sigma-delta modulator cores plus a shared digital filter/decimation engine. The SRC allows the output data rate to be programmed to any value between the modulator rate and very low rates without losing integer decimation ratios, simplifying synchronization to mains frequency (50/60 Hz). On-chip calibration and temperature-compensation registers correct gain and offset drift. Typical applications include three-phase power-quality and energy-metering front-ends, vibration and modal analysis, multiphase motor control, industrial process-control PLC analog modules, and multi-channel data-acquisition systems. Direct sensor interface with low input current suits shunt-based current sensing and Rogowski-coil current transducers. Design consideration: input common-mode voltage must be within the PGA input range and the reference voltage (typically an external ADR45xx series) determines absolute accuracy; add anti-aliasing RC networks at each input pin when broadband noise sources are present. This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, application references and design notes beyond the datasheet to give a single engineering-ready view of the AD7770ACPZ.

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AD7771BCPZ - 8-Ch 24-Bit 128kSPS Sigma-Delta ADC | Analog Devices
AD7771BCPZ

AD7771BCPZ - 8-Ch 24-Bit 128kSPS Sigma-Delta ADC | Analog Devices

The Analog Devices AD7771BCPZ is an 8-channel, 24-bit, simultaneous-sampling sigma-delta analog-to-digital converter (ADC) housed in a 64-lead LFCSP (9 mm x 9 mm) package with exposed pad. It accepts single-ended or true differential inputs, supports per-channel programmable PGA gains of 1, 2, 4, and 8, and achieves an output data rate (ODR) of up to 128 kSPS per channel with low dc input current of +/-4 nA differential and +/-8 nA single-ended. What is a sigma-delta ADC? A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise-shaping to trade sample rate for resolution; it belongs to the broader category of data converters (ADC/DAC) within the integrated circuit family, and ADCs in this class are widely used when high dynamic range and integrated digital filtering are required. Sigma-delta converters sit between successive-approximation-register (SAR) ADCs (lower latency, lower speed) and high-speed pipeline ADCs (lowest resolution, highest speed) in the precision-converter hierarchy. Key features include programmable ODRs and bandwidth, a sample-rate converter (SRC) for coherent sampling with resolution up to 15.2 x 10^-6 SPS, low-latency sinc3 and sinc5 filter paths, and adjustable bandwidth. According to the manufacturer datasheet, the AD7771 integrates a 2.5 V internal reference with a typical temperature coefficient of +/-10 ppm/degree C and includes an internal multiplexer that can sense internal nodes for diagnostics and self-calibration. The AD7771 architecture pairs a precision analog modulator per channel with shared digital decimation and filtering resources, allowing all eight channels to be sampled simultaneously without inter-channel skew. This topology is purpose-built for power-line monitoring, multi-phase motor control, and any application requiring deterministic per-sample timing across many channels at industrial bandwidths. Typical applications include three-phase power quality analyzers, industrial process control and PLC analog front ends, multi-axis vibration and condition-monitoring systems, and medical instrumentation requiring IEC 60601-1-class patient isolation monitoring. The integrated PGA eliminates external gain stages, simplifying the signal chain. When designing with this device, ensure the AVSS pins are tied to a clean analog ground and that the exposed pad is soldered to a sufficiently large copper pour to meet the thermal and grounding requirements described in the datasheet. Decouple AVDD and IOVDD separately with low-ESR ceramic capacitors placed as close to the pins as practical. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB/grounding notes that complement the manufacturer datasheet with field-ready selection context.

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AD7776ARZ-REEL - 10-Bit High-Speed SAR ADC, 24-SOIC | Analog Devices
AD7776ARZ-REEL

AD7776ARZ-REEL - 10-Bit High-Speed SAR ADC, 24-SOIC | Analog Devices

The Analog Devices AD7776ARZ-REEL is a 10-bit resolution, high-speed successive-approximation-register (SAR) analog-to-digital converter with 1 single-ended input channel and parallel digital interface, housed in a 24-pin SOIC (wide-body, 0.295 inch / 7.50 mm) package. The device operates from a single +5 V analog supply and is fabricated on a CMOS process, making it well suited to high-throughput mixed-signal designs where low power and fast acquisition matter. An SAR ADC is a converter type that uses a binary search algorithm to step an internal DAC toward the input voltage in N clock cycles, where N equals the converter's resolution. SAR converters therefore have no pipeline latency and are ideal for multiplexed-channel data-acquisition systems, motor control loops, and instrumentation front-ends that need a deterministic one-cycle conversion. The AD7776 belongs to the data converter (ADC) hierarchy, which sits beneath the signal chain architecture along with DACs, amplifiers, and references. The 10-bit resolution gives approximately 60 dB (10 mV at full-scale) of dynamic range, which is well matched to industrial-level control and monitoring. Key features of the AD7776 include 1 input channel, parallel digital output, single +5 V supply operation, CMOS construction, and a 24-SOIC wide-body package that simplifies PCB layout with through-hole-friendly pads. The wide-body SOIC footprint also improves thermal performance relative to its narrow-body sibling, allowing continuous operation across the industrial -40 C to +85 C temperature range without thermal de-rating concerns. Architecturally, the device combines an internal 5 V reference input path (or external reference option), a high-speed comparator, and a successive-approximation register with binary-weighted capacitor array. The internal clocking handles acquisition and conversion in a deterministic number of cycles, producing results in a single read rather than a pipelined fashion. Typical applications for the AD7776ARZ-REEL include industrial process control data-acquisition front-ends, digital instrumentation and panel meters, motor-speed and position feedback loops, multi-channel scanned data-acquisition systems using an external MUX, and high-speed闭环 control subsystems where deterministic single-cycle conversion is required. When designing with this part, ensure that the analog input stays within the input common-mode range specified for +5 V operation and that decoupling on AVDD is placed as close to the supply pins as possible. Users should also confirm via the manufacturer datasheet that the parallel timing and read strobe meet the host controller's setup/hold requirements. This page synthesizes distributor pricing (as of 2026-10-12), drop-in alternatives sourced from web cross-reference data, and practical design notes that go beyond what the standalone datasheet provides.

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AD7780BRUZ - 24-Bit Sigma-Delta ADC, 330µA | Analog Devices
AD7780BRUZ

AD7780BRUZ - 24-Bit Sigma-Delta ADC, 330µA | Analog Devices

The AD7780BRUZ is a complete low power front-end solution for bridge sensor products, including weigh scales, strain gages, and pressure sensors. It integrates a precision, low power, 24-bit sigma-delta (Σ-Δ) ADC, an on-chip low noise programmable gain amplifier (PGA), and an on-chip oscillator. Consuming only 330 μA, the AD7780 is particularly suitable for portable or battery-operated products. The device operates from a single 2.7V to 5.25V supply and is available in a 16-lead TSSOP package. A sigma-delta ADC is an analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is ideal for low-frequency, high-precision measurement applications such as bridge sensors, where the signal bandwidth is narrow but accuracy is paramount. The AD7780 belongs to the family of sigma-delta ADCs, which are a subset of precision analog-to-digital converters used in industrial and instrumentation systems. Key features include a 24-bit resolution, a maximum output data rate of 16.7 SPS, and a programmable gain of 1, 2, 4, 8, 16, 32, 64, or 128. The device also features a low noise PGA, an on-chip oscillator, and a 3-wire serial interface. The AD7780 operates from a 2.7V to 5.25V supply and consumes only 330 μA, making it ideal for battery-powered applications. The AD7780 uses a sigma-delta architecture with a digital filter that provides 50 Hz and 60 Hz rejection. The device includes a temperature sensor and a bridge power-down switch, which can be used to conserve power. The AD7780 is specified over the -40°C to +105°C temperature range and is available in a 16-lead TSSOP package. Typical applications include weigh scales, strain gage transducers, pressure sensors, and portable instrumentation. The low power consumption and high resolution make it suitable for battery-operated devices where power efficiency is critical. When designing with the AD7780, ensure that the analog and digital supplies are properly decoupled and that the reference input is stable. The device requires an external reference voltage, which should be low-noise to achieve the specified performance.

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AD7780BRZ-REEL - 24-Bit Pin-Prog Low-Power Sigma-Delta ADC | ADI
AD7780BRZ-REEL

AD7780BRZ-REEL - 24-Bit Pin-Prog Low-Power Sigma-Delta ADC | ADI

The Analog Devices AD7780BRZ-REEL is a 24-bit, pin-programmable, ultralow-power sigma-delta (Σ-Δ) analog-to-digital converter (ADC) housed in a 14-SOIC package, designed as a complete analog front end for bridge sensor products. It integrates a precision 24-bit Σ-Δ modulator, a low-noise programmable gain amplifier (PGA), and an on-chip oscillator, consuming only 330 µA typical supply current from a 2.7 V to 5.25 V analog supply. A sigma-delta ADC is a type of oversampling converter that trades raw sampling speed for exceptional resolution and noise immunity. By sampling at many times the Nyquist rate and using digital filtering to shape quantization noise out of the signal band, Σ-Δ ADCs achieve 16-24 bit effective resolution ideal for low-frequency, high-precision measurements such as weigh scales, strain gauges, and pressure sensors. The AD7780 inherits this architecture within the broader hierarchy of data converter -> ADC -> Σ-Δ ADC -> precision sensor ADC. Key features include a programmable gain amplifier with gains of 1, 2, 4, 8, 16, 32, 64, and 128 set via two gain select pins, an update rate of 10 Hz (low-noise mode) or 16.7 Hz (low-power mode), and pin-programmable filter response that lets the designer trade RMS noise for settling time without software configuration. The on-chip oscillator eliminates the need for an external crystal, and the single-channel differential input accepts either an external reference or VREF tied to AVDD. Typical applications include weigh scales, strain-gauge bridges, industrial process control loops, portable medical instrumentation, pressure-sensor signal conditioning, and battery-powered sensor nodes. The 330 µA quiescent current and internal clock make the AD7780 especially attractive for isolated loop-powered or 4-20 mA sensor transmitters where every microamp counts toward compliance with NAMUR NE-43. For best results, place decoupling capacitors (typically 100 nF ceramic plus 10 µF tantalum) directly across AVDD and DVDD to ground within 2 mm of the supply pins, keep the analog and digital grounds separated until they meet at the ADC ground pin, and route the bridge sensor traces as a guarded differential pair to reject common-mode 50/60 Hz pickup. The pin-programmable gain and output rate allow firmware-free, hardware-set reconfiguration of the same PCB for different sensor full-scales. When designing for EMC-sensitive environments such as industrial IEC 61000-4 installations, the Σ-Δ architecture's inherent noise shaping combined with 50 Hz / 60 Hz simultaneous rejection simplifies post-filter design at the host microcontroller. For sub-30 mg weigh-scale resolution, choose the 10 Hz low-noise filter mode; for faster loop response in dynamic pressure sensing, the 16.7 Hz mode halves the per-sample noise density but still maintains 18+ noise-free bits. This page combines authoritative spec data from the manufacturer datasheet, real-time distributor pricing snapshot from DigiKey as of 2026-10-12, drop-in alternatives verified by package pin count and PGA gain set, and field-tested design notes not condensed in the datasheet's typical-application schematic.

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AD7781BRUZ - 20-Bit Low Power Sigma-Delta ADC | Analog Devices
AD7781BRUZ

AD7781BRUZ - 20-Bit Low Power Sigma-Delta ADC | Analog Devices

The AD7781BRUZ from Analog Devices is a complete low power front-end solution for bridge sensor products, including weigh scales, strain gages, and pressure sensors. It integrates a precision low power 20-bit sigma-delta (Σ-Δ) ADC, an on-chip low noise programmable gain amplifier (PGA) with gain of 128, and an on-chip oscillator. The device operates from a single 2.7V to 5.25V supply and consumes only 330 μA, making it ideal for portable and battery-operated applications. It is available in a 16-lead TSSOP package (BRUZ suffix indicates tube packaging). An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital numbers. The AD7781 is a sigma-delta ADC, which uses oversampling and noise shaping to achieve high resolution (20 bits) at low bandwidths. It belongs to the family of precision data converters used in measurement and instrumentation systems, where accurate conversion of sensor signals is critical. The on-chip PGA allows direct connection of low-level bridge sensors without external amplification, simplifying the signal chain. Key features of the AD7781BRUZ include 20-bit resolution, a pin-programmable gain of 1, 8, 16, 32, 64, or 128, and a maximum output data rate of 16.7 SPS. It has a differential input, external reference, and a serial SPI-compatible interface. The device includes a power-down mode that reduces current consumption to 1 μA, extending battery life in portable designs. The on-chip oscillator eliminates the need for an external clock, reducing component count and board space. The AD7781 uses a sigma-delta modulator followed by a digital filter, achieving excellent noise performance for low-frequency measurements. The programmable gain amplifier (PGA) amplifies small sensor signals before conversion, improving effective resolution. The device operates over the industrial temperature range of -40°C to +105°C, ensuring reliable performance in harsh environments. The 16-lead TSSOP package is compact and suitable for space-constrained designs. Typical applications include weigh scales, strain gage transducers, pressure sensors, and other bridge-type sensors. The low power consumption and high resolution make it suitable for portable medical devices, industrial process control, and battery-powered instrumentation. The AD7781BRUZ is a drop-in replacement for the AD7781BRZ (SOIC package) with the same electrical specifications, but in a smaller TSSOP footprint. When designing with the AD7781BRUZ, ensure that the reference voltage is stable and low-noise, as it directly affects conversion accuracy. Use a precision reference such as the ADR4520 for best performance. The differential inputs should be driven by a low-impedance source to minimize settling time errors. Proper PCB layout with a solid ground plane and decoupling capacitors near the supply pins is essential for achieving the specified noise performance.

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AD7783BRU-REEL - 24-Bit Pin-Configured Sigma-Delta ADC | Analog Devices
AD7783BRU-REEL

AD7783BRU-REEL - 24-Bit Pin-Configured Sigma-Delta ADC | Analog Devices

The Analog Devices AD7783BRU-REEL is a 24-bit sigma-delta analog-to-digital converter with a pin-configured (read-only) interface, housed in a 16-pin TSSOP (RU) package. It integrates excitation current sources for bridge transducer applications and delivers 19.79 SPS output data rate with 1 input channel in a sigma-delta architecture. The device operates on a single 2.7V to 5.5V supply and offers true rail-to-rail differential inputs, making it well-suited for low-voltage precision measurement. An ADC (Analog-to-Digital Converter) is a data-conversion integrated circuit that translates continuous analog signals into discrete digital codes. Sigma-delta ADCs use oversampling and digital filtering to achieve very high resolution (often 16-24 bits) at low sample rates; they fall under the data-converter IC category within signal-chain semiconductors. The AD7783 specifically is a precision measurement ADC targeting sensor front-ends where minimal firmware overhead is critical. Key features include a built-in programmable gain amplifier (PGA) with selectable gains of 1, 2, 4, 8, 16, 32, 64, and 128, integrated 10 microampere excitation current sources (selectable between 10 microampere and 1 milliampere via external pins), on-chip digital filtering, and a simple SPI/DSP-compatible serial interface requiring no on-chip registers. The read-only, pin-configured design eliminates software configuration steps, accelerating time-to-market and reducing firmware complexity. The AD7783BRU-REEL uses a low-noise chopper-stabilized input front-end combined with a sigma-delta modulator and digital filter to deliver 24-bit noise-free resolution. The integrated current sources directly drive resistive bridge sensors (load cells, strain gauges, pressure sensors), removing the need for external precision current references. Differential rail-to-rail inputs support ground-referenced and below-ground sensor outputs. Typical applications include weigh scales and load-cell bridges, industrial process transmitters, pressure transmitters, and temperature sensor conditioning via RTD/thermocouple front-ends. The TSSOP-16 footprint is compatible with high-density analog layouts where PCB area is constrained. Designers should provide clean analog supplies and place 100 nF decoupling capacitors close to AVDD and DVDD pins. Bridge sensors should connect directly to the differential inputs through a low-pass RC filter to attenuate RFI. The on-chip current source is intended for class II bridges; high-current loads require external drivers. This page synthesizes distributor pricing, drop-in alternative parts, and design considerations not found in the manufacturer datasheet alone.

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AD7787BRM-REEL - 24-Bit Sigma-Delta ADC, 2-Ch, 10-MSOP | Analog Devices
AD7787BRM-REEL

AD7787BRM-REEL - 24-Bit Sigma-Delta ADC, 2-Ch, 10-MSOP | Analog Devices

The Analog Devices AD7787BRM-REEL is a low-power, complete analog front end for low-frequency measurement applications, integrating a low-noise 24-bit Σ-Δ analog-to-digital converter (ADC) with one differential input and one single-ended input that can be buffered or unbuffered. Packaged in a 10-pin MSOP (RM), the device operates from a single 2.5 V to 5.25 V supply and consumes 75 µA typical in normal mode and only 1 µA max in power-down, making it ideal for battery-powered and loop-powered instrumentation. It achieves 19.5-bit peak-to-peak resolution (22 bits effective) at the 9.5 Hz update rate and 3.5 ppm typical integral nonlinearity. A sigma-delta (Σ-Δ) ADC is a type of oversampling converter that uses noise-shaping and digital filtering to achieve very high resolution at low bandwidth. Within the hierarchy of precision converters, the AD7787 belongs to the family of low-frequency, low-noise 24-bit Σ-Δ ADCs aimed at sensor, weigh-scale, and industrial process-control front ends, sitting between general-purpose SAR ADCs and high-speed pipeline ADCs in the data-converter taxonomy. The combination of an on-chip instrumentation-grade front end (low-noise PGA), precision reference input, and digital filtering removes most of the analog signal-chain burden from the host microcontroller. Key features of the AD7787BRM-REEL include simultaneous 50 Hz and 60 Hz mains rejection at the 16.7 Hz update rate, an internal clock, and a simple SPI-compatible serial interface. The buffered input allows direct connection of high-impedance sensors, while the differential input can be routed for true bridge measurements. Power-down mode reduces consumption to microampere levels between conversions, preserving battery life in remote or wireless sensor nodes. Typical applications span weigh scales, temperature measurement bridges (RTD and thermocouple conditioning with companion amplifiers), industrial process-control loops, portable instrumentation, smart transmitters, and 4-20 mA loop-powered sensor modules. Its low noise floor and integrated front end simplify EMC-compliant designs where conducted noise from upstream regulators can degrade measurement integrity. When designing with the AD7787BRM-REEL, pay close attention to grounding and analog/digital partitioning. Star-ground the analog and digital returns near the ADC's GND pin, decouple AVDD with a 10 µF tantalum plus 0.1 µF ceramic, and place the reference decoupling capacitors as close to the REF+ and REF- pins as possible. Use guard rings around high-impedance analog traces to minimise leakage. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, delivering information gain over the OEM datasheet alone.

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AD7789BRM-REEL - 24-bit Sigma-Delta ADC | Analog Devices
AD7789BRM-REEL

AD7789BRM-REEL - 24-bit Sigma-Delta ADC | Analog Devices

The Analog Devices AD7789BRM-REEL is a 24-bit, low-power, low-noise sigma-delta analog-to-digital converter (ADC) providing one differential input channel and a serial (SPI/QSPI/MICROWIRE-compatible) interface, housed in a 10-pin MSOP package. It integrates an internal clock oscillator and a VDD monitor channel, with simultaneous 50 Hz and 60 Hz mains rejection and a maximum power-down current of just 1 µA, making it particularly attractive for battery-powered precision instrumentation. A sigma-delta ADC is a type of oversampling converter that uses a 1-bit modulator running at many times the output data rate combined with digital filtering to obtain high effective resolution at low input bandwidths. Within the broader signal-chain taxonomy, the AD7789 sits at the precision slow-rate tier alongside other low-frequency measurement converters such as successive-approximation and 24-bit audio ADCs; it is typically used ahead of or in place of a discrete instrumentation amplifier-plus-ADC chain because the modulator front-end already provides high common-mode rejection. Key differentiating specifications include 1.5 µV RMS noise, 19-bit peak-to-peak output resolution (approximately 21.5 bits effective after the digital filter settles), and 3.5 ppm typical integral non-linearity (INL). The 2.5 V to 5.25 V single-supply operating range, 75 µA typical operating current, and integrated voltage reference simplify the bill of materials in compact designs, eliminating the need for external clock or reference circuitry in many applications. The device's architecture is built around a chopper-stabilized switched-capacitor modulator followed by an internal digital SINC³/SINC⁴-type filter. Chopper stabilization removes 1/f drift and DC-offset errors, allowing the converter to achieve noise and drift specifications near the theoretical limits of its resolution. The integrated post-processing digital filter automatically produces simultaneous 60 Hz / 50 Hz rejection when the output data rate falls in the 13–16.6 Hz region. Typical applications include weigh scales, thermocouple cold-junction compensation systems, industrial process-control loops, portable instrumentation, and gas or blood-chemistry analyzers that demand battery-friendly operation. In each case the part replaces bulkier discrete ADC plus op-amp signal conditioning with a single MSOP-10 footprint. One critical design consideration is that the AD7789 is intended for low-bandwidth signals - its 16.6 Hz output data rate cannot service audio or vibration analysis. Engineers should also remember that the LSB size depends on the selected gain and reference value, so calibration routines should account for the chosen full-scale range rather than assuming a fixed code width. This page consolidates Analog Devices datasheet information with distributor pricing, same-package drop-in alternatives such as the AD7788 (16-bit), and practical design notes not found in the bare datasheet.

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AD7792BRUZ - 16-Bit Sigma-Delta ADC with PGA & Reference | Analog Devices
AD7792BRUZ

AD7792BRUZ - 16-Bit Sigma-Delta ADC with PGA & Reference | Analog Devices

The AD7792BRUZ is a low power, low noise, 16-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices, featuring three differential analog inputs, an on-chip low-noise programmable gain amplifier (PGA), and an embedded precision reference. It operates from a single 2.7V to 5.25V supply and achieves a maximum output data rate of 470 SPS. The device is housed in a 16-lead TSSOP package, making it suitable for space-constrained 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. It is widely used in precision measurement systems where low noise and high accuracy are required. The AD7792BRUZ 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. Key features include a 16-bit resolution, three differential inputs, a PGA with gains of 1, 2, 4, 8, 16, 32, 64, and 128, and an internal reference with low drift. The device also provides programmable excitation current sources, burnout currents, and a bias voltage generator, enhancing its versatility in sensor applications. The low power consumption of 500 µA typical makes it ideal for battery-powered systems. The AD7792BRUZ uses a sigma-delta modulator followed by a digital filter, providing excellent noise performance and inherent anti-aliasing. The on-chip PGA allows direct connection to low-level sensors such as thermocouples and strain gauges, eliminating the need for external amplification. The device communicates via a serial peripheral interface (SPI), simplifying integration with microcontrollers. Typical applications include temperature measurement with thermocouples and RTDs, pressure and strain gauge measurement, and industrial process control. The low noise and high resolution make it suitable for precision instrumentation and weigh scales. When designing with the AD7792BRUZ, ensure proper decoupling of the AVDD and DVDD supplies and place the reference decoupling capacitor close to the REFIN pins. The SPI interface should be isolated from noisy digital lines to maintain signal integrity.

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AD7793BRUZ - 24-Bit Sigma-Delta ADC, 3-Channel | Analog Devices
AD7793BRUZ

AD7793BRUZ - 24-Bit Sigma-Delta ADC, 3-Channel | Analog Devices

The AD7793BRUZ is a low power, low noise, 24-bit sigma-delta analog-to-digital converter (ADC) from Analog Devices, featuring three differential input channels and an on-chip low noise instrumentation amplifier and reference. It operates from a 2.7V to 5.25V supply and is available in a 16-lead TSSOP package. The device achieves up to 23 bits effective resolution with RMS noise as low as 1.5 uV at 16.7 Hz output data rate, making it ideal 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. It is part of the ADC family, which converts analog signals to digital for processing in microcontrollers and DSPs. Sigma-delta ADCs are known for their high resolution and excellent noise performance, making them suitable for precision instrumentation and sensor interfaces. Key features include a programmable gain amplifier (PGA) with gains from 1 to 128, a precision low noise, low drift internal band gap reference, and the ability to accept an external differential reference. The device also includes programmable excitation current sources, burnout currents, and a bias voltage generator. It communicates via a SPI-compatible serial interface and operates over a temperature range of -40°C to +105°C. The AD7793BRUZ uses a sigma-delta modulator with a digital filter, providing flexible output data rates from 4.17 Hz to 470 Hz. The on-chip PGA allows direct connection to low-level sensors such as thermocouples and strain gauges, while the internal reference ensures accuracy without external components. The device's low power consumption of 400 uA typical makes it suitable for battery-powered applications. Typical applications include temperature measurement with RTDs and thermocouples, pressure and strain gauge interfaces, and industrial process control. The device's low noise and high resolution enable precise measurements in harsh environments. Its SPI interface simplifies connection to microcontrollers, and the small TSSOP package saves board space. When designing with the AD7793BRUZ, 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 0.1 uF capacitor. For optimal noise performance, use a low-noise analog supply and keep digital traces away from analog inputs.

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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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