Integrated Circuits

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Products (38,000+)

AD7710AR-REEL - 24-Bit Sigma-Delta ADC w/ PGA | Analog Devices
AD7710AR-REEL

AD7710AR-REEL - 24-Bit Sigma-Delta ADC w/ PGA | Analog Devices

The Analog Devices AD7710AR-REEL is a 24-bit, charge-balancing sigma-delta analog-to-digital converter with a 2-channel programmable-gain front end, packaged in a 24-pin SOIC (Wide Body, 0.295 in / 7.50 mm) and supplied on a 7-inch tape-and-reel. It accepts low-level bipolar or unipolar signals directly from a transducer or strain gage, performs on-chip gain and offset calibration, and outputs a serial digital word at sampling rates up to 1.028 kSPS through a bidirectional serial port. A sigma-delta ADC is an oversampling converter that uses a modulator and digital filter to achieve very high effective resolution at low bandwidth. It belongs to the precision data-converter family, sitting between successive-approximation ADCs (faster, lower resolution) and integrating ADCs (slower, very high noise rejection). Within Analog Devices' portfolio, sigma-delta converters target low-frequency measurement applications such as weigh scales, industrial process controls, and sensor signal conditioning. Key features include 24 bits with no missing codes, ±0.0015% maximum nonlinearity, differential inputs, programmable gains from 1 to 128, an integrated low-pass digital filter, and a programmable current source for transducer excitation. The bidirectional serial interface allows input-channel selection, gain, polarity, and calibration mode to be configured in software; self-calibration, system calibration, and background calibration modes are supported through on-chip calibration registers. Architecturally, the AD7710 combines an input switching network, a chopper-stabilized PGA, a sigma-delta modulator, and a digital filter on a single CMOS die. The chopper-stabilized front end minimizes drift and 1/f noise, while the digital filter simultaneously provides 50 Hz / 60 Hz power-line rejection, eliminating the need for external filtering on industrial mains frequencies. Typical applications include weigh scales, load-cell/strain-gage signal conditioning, RTD and thermocouple temperature measurement, pressure transducers, flow meters, and 4-20 mA loop-powered industrial sensor transmitters. The on-chip current source and PGA let designers eliminate external instrumentation amplifiers and excitation circuits. When designing with the AD7710, pay attention to analog and digital ground separation, decouple AVDD with a 10 µF tantalum plus 0.1 µF ceramic close to the pin, and reserve sufficient digital-filter settling time after channel or gain changes to avoid erroneous readings. This page synthesizes distributor pricing, drop-in alternative candidates, and practical design notes that complement the Analog Devices datasheet revision G.

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AD7712AR-REEL7 - 24-Bit Sigma-Delta ADC | Analog Devices | SOIC-24
AD7712AR-REEL7

AD7712AR-REEL7 - 24-Bit Sigma-Delta ADC | Analog Devices | SOIC-24

The Analog Devices AD7712AR-REEL7 is a complete analog front-end, low-frequency, dual-channel 24-bit sigma-delta analog-to-digital converter (ADC) in a 24-pin SOIC (Wide) package supplied on 7-inch tape and reel. It accepts either low-level transducer signals directly (with on-chip programmable gain from 1 to 128) or high-level (±4 × VREF) signals, and outputs a serial digital word through a bidirectional serial port. What is a sigma-delta ADC? A sigma-delta (Σ-Δ) converter is a type of analog-to-digital converter that oversamples an input signal and uses noise-shaping to push quantization noise out of the baseband, trading speed for very high resolution and excellent linearity. In the broader taxonomy: ADC -> data converter -> mixed-signal IC -> semiconductor. The AD7712 sits at the signal-conditioning end of this hierarchy, integrating input multiplexers, programmable gain amplifiers (PGAs), digital filtering, and calibration logic so a microcontroller only has to read conversions over a synchronous serial interface. Key features of the AD7712AR-REEL7 include 24-bit no-missing-codes performance, ±0.0015% (15 ppm) integral nonlinearity, charge-balancing conversion, and on-chip self-calibration that nulls offset and gain errors. The low-level input channel features true differential inputs with common-mode rejection, and the high-level input accepts bipolar ±4 × VREF. Conversion rates and output word rates are software-configurable via the serial port, allowing trade-offs between resolution and update rate. Architecturally, the AD7712 uses a switched-capacitor charge-balancing modulator followed by a digital decimation filter. This approach eliminates the need for high-precision external analog components; only a few decoupling capacitors and a precision voltage reference (such as the AD780 or ADR291) are required. The serial interface is compatible with most microcontrollers and DSPs, and the device operates from a single +5 V supply while consuming modest quiescent current for portable instrumentation. Typical applications include weigh scales and load-cell digitizers, industrial process-control transmitters (4-20 mA loops), portable battery-powered instrumentation, smart sensor signal conditioning, and pressure, temperature, or strain-gauge front-ends. The integrated PGA removes the need for external instrumentation amplifiers in most transducer bridges, reducing both BOM cost and PCB area. A key design consideration is reference voltage quality: noise on VREF directly appears as conversion noise, so a low-noise, low-drift reference is essential. Designers should also route analog and digital grounds as a star from the AD7712 and follow ADI's recommended decoupling layout. This page synthesizes distributor pricing, cross-reference drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate lifecycle, substitution risk, and BOM decisions in one view.

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AD7713AN - 24-Bit Sigma-Delta Signal Conditioning ADC | Analog Devices
AD7713AN

AD7713AN - 24-Bit Sigma-Delta Signal Conditioning ADC | Analog Devices

The Analog Devices AD7713AN is a 24-bit, sigma-delta analog-to-digital converter designed for low-frequency, high-accuracy measurement applications. It integrates a programmable-gain front end, digital filtering, and on-chip calibration, delivering 24-bit resolution at throughput rates suitable for industrial-process control and weigh-scale front ends in a 24-pin plastic DIP package. A sigma-delta ADC is a type of oversampling converter that trades raw sampling speed for very high resolution by pushing quantization noise to high frequencies and then aggressively digital-filtering it away. The AD7713AN belongs to the family of signal-conditioning ADCs that combine the converter with on-chip calibration, programmable gain, and a flexible serial interface. This architecture sits inside the broader hierarchy of data-acquisition ICs -> precision ADCs -> 24-bit sigma-delta converters -> industrial measurement front ends, making it a turnkey front end for bridge sensors, RTDs, and thermocouples in noisy factory environments. Key features include 24-bit no-missing-codes performance, an effective resolution up to 21.5 bits at the 60 Hz output rate, and on-chip self-calibration that removes both offset and gain errors. The analog front end accepts differential or pseudo-differential inputs with software-configurable gains from 1 to 128, and the LC2MOS front-end design maintains low input currents for direct connection to high-impedance sensor bridges. A 150 µW typical power-down mode makes the part attractive for loop-powered and battery-backed instruments. Architecturally the device uses a fourth-order sigma-delta modulator followed by a programmable low-pass digital filter, with the modulator sampling far above the Nyquist rate. The on-chip calibration registers store zero-scale and full-scale correction coefficients, which the user can invoke at any time to compensate for drift caused by temperature or aging, an important advantage over un-calibrated ADCs in long-deployment instrumentation. Typical applications include weigh scales and load-cell readouts, strain-gauge bridges, industrial process-control analog input modules, temperature measurement with RTDs and thermocouples, portable loop-powered 4-20 mA smart transmitters, and chart recorders. The wide dynamic range also suits acoustic and vibration transducers where small signals sit on top of large DC bias. When designing with this device, evaluate the input common-mode voltage carefully because the sigma-delta modulator rejects common-mode noise only within the configured input range; a poorly biased bridge will degrade effective resolution. Provide a clean analog ground and a low-impedance reference - the AD7713AN's accuracy is fundamentally limited by reference noise and PCB layout. This page combines distributor pricing, drop-in alternative parts in the same 24-pin DIP package, and practical design considerations not aggregated on any single distributor page.

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AD7714ARS-5REEL - 24-Bit Sigma-Delta ADC, 28-SSOP | Analog Devices
AD7714ARS-5REEL

AD7714ARS-5REEL - 24-Bit Sigma-Delta ADC, 28-SSOP | Analog Devices

The Analog Devices AD7714ARS-5REEL is a 24-bit sigma-delta analog-to-digital converter with a complete analog front end for low-frequency measurement applications, supplied in a 28-pin SSOP package on tape-and-reel. It accepts low-level signals directly from a transducer and outputs a serial digital word via a three-wire SPI/QSPI/MICROWIRE-compatible interface. The part operates from a single 5 V supply and integrates a charge-balancing ADC with up to 24 bits of no-missing-codes performance and 0.0015% non-linearity. A sigma-delta ADC is a converter architecture that oversamples an input signal, shapes quantization noise out of the signal band, and decimates the high-rate bitstream down to a lower output word rate, achieving very high resolution at the cost of input bandwidth. Within the broader data-converter hierarchy, sigma-delta ADCs sit between precision SAR converters (faster, lower-resolution) and integrating dual-slope ADCs (very slow, very high DC accuracy). The AD7714 is specifically positioned as a complete analog front end: programmable-gain front end, on-chip calibration, and digital filtering are integrated so that a transducer can be connected directly with minimal external signal conditioning. Key specifications include 24-bit resolution with no missing codes, 0.0015% non-linearity, 140 nV rms noise, and a programmable-gain front end supporting gains from 1 to 128 over five input channels. The output data rate is configurable and the part provides self-calibration modes that remove zero-scale and full-scale endpoint errors plus temperature-drift effects. Compared to the original A grade, the Y grade (the -5 suffix) adds Schmitt-trigger inputs on SCLK and DIN, tighter linearity, lower power consumption, and an extended operating temperature range, while being available in a smaller SSOP package. The AD7714 employs a proprietary charge-balancing conversion technique that allows direct connection to strain gauges, RTDs, thermocouples, and other low-level bridge-type transducers. On-chip registers control filter cutoff, input gain, channel selection, signal polarity, and calibration modes. The three-wire serial interface minimizes interconnect lines, which is particularly valuable in isolated front ends because it reduces the number of optocouplers required between the transducer and the host microcontroller or DSP. Typical applications include industrial process control weighing scales, strain-gauge and load-cell signal conditioning, portable battery-powered instrumentation, and isolated 4-20 mA loop digitizers. The low 500 µA supply current makes the part attractive for loop-powered or handheld instruments. Use the AD7714 when you need 20-24 bit effective resolution on DC or slowly-varying signals, integrated PGA gains up to 128, and an SPI-compatible digital interface that interfaces directly to microcontrollers and DSPs.

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AD7714YRU-REEL7 - 24-bit Sigma-Delta ADC, 5-Ch, 24-TSSOP | ADI
AD7714YRU-REEL7

AD7714YRU-REEL7 - 24-bit Sigma-Delta ADC, 5-Ch, 24-TSSOP | ADI

The Analog Devices AD7714YRU-REEL7 is a 24-bit sigma-delta analog-to-digital converter (ADC) with 3/5 input channels, 1 kSPS output rate, and on-chip programmable-gain front end, packaged in a 24-pin TSSOP. The Y-grade version extends the operating temperature range to -40C to +105C and adds Schmitt-trigger inputs on SCLK and DIN compared to the A-grade, with tighter linearity, lower power consumption, and a smaller package footprint. An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Sigma-delta ADCs use oversampling and noise-shaping to achieve very high resolution (16-24 bits) at low sample rates, making them ideal for precision DC and low-frequency measurement applications such as weigh scales, industrial process control, and sensor signal conditioning. Within the IC hierarchy, the AD7714 belongs to the data-converter category, then ADC, then precision sigma-delta ADC, then integrated signal-conditioning ADC. Key features include 24-bit no-missing-code performance, +/-0.0015% nonlinearity, 140 nV rms noise, gains programmable from 1 to 128, and three fully differential or five pseudo-differential input channels. A three-wire serial interface (SPI/QSPI/MICROWIRE-compatible) reduces isolation overhead, and on-chip self-calibration eliminates zero-scale and full-scale errors plus temperature drift. The Y-grade also includes a low-side power switch for bridge-sensor applications. Typical applications include weigh scales, strain-gauge transducers, RTD/thermocouple temperature measurement, industrial process control loops, and portable battery-powered instrumentation. The wide gain range lets a single part digitize both low-level thermocouple signals (tens of microvolts) and 0-10 V industrial signals without external amplifiers. Designers should pay attention to the input common-mode range and avalanche protection; the reference input must remain within the specified common-mode window for the chosen gain. PCB layout should isolate analog and digital grounds with a single-point connection near the ADC. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not directly aggregated on the manufacturer datasheet.

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AD7715ACHIPS-3 - 16-Bit Sigma-Delta ADC, 3V, 450uA | ADI
AD7715ACHIPS-3

AD7715ACHIPS-3 - 16-Bit Sigma-Delta ADC, 3V, 450uA | ADI

The Analog Devices AD7715ACHIPS-3 is a 16-bit, charge-balancing sigma-delta analog-to-digital converter (ADC) supplied as a bare die (CHIPS form), designed to operate from a single 3 V supply with a total current consumption below 450 uA at 1 MHz master clock. The -3 suffix designates the 3 V supply variant, and the CHIPS suffix indicates the unpackaged die form factor that requires hybrid or chip-on-board (COB) assembly by the customer. The device offers 16 bits of resolution with no missing codes, 0.0015% integral nonlinearity, differential analog inputs, a three-wire serial interface (SPI/QSPI/MICROWIRE compatible), and a programmable-gain front end with gains of 1, 2, 32 and 128. What is a sigma-delta ADC? A sigma-delta (ΣΔ) ADC is a class of oversampling converter that trades raw speed for very high resolution by pushing quantization noise out of the signal band using a modulator and a digital filter. Within the broader hierarchy, the AD7715ACHIPS-3 sits in the precision converter category (ADC > sigma-delta ADC > low-frequency precision ADC > data acquisition IC > signal conditioning > power management), and is intended for transducer-based measurements where DC accuracy and noise rejection matter more than throughput. Key features include 16-bit resolution with no missing codes, very low 450 uA supply current at 3 V/1 MHz, a charge-balancing front end that simplifies external antialias filtering, programmable gains up to 128 for direct bridge or thermocouple hookups, and self-calibration options that remove zero-scale and full-scale errors. The differential input pair can accept unipolar or true bipolar input ranges when the part is operated from a 5 V supply rail (AD7715-5 variant). Architecturally, the converter combines a switched-capacitor modulator and a digital filter on a single CMOS die, achieving the same effective resolution as discrete modulator-plus-filter designs at a fraction of the power. The internal calibration registers capture system offset and gain at the user's programmed update rate, allowing the ADC to compensate for front-end drift without processor intervention. Typical applications include weigh scales and load-cell bridges, thermocouple cold-junction compensation, portable industrial instrumentation, and pressure transducer readouts. Because the device is offered in CHIPS (bare-die) form, integrators typically embed it inside custom sensor modules, hybrid microcircuits, or harsh-environment packages where standard PDIP/SOIC would not survive. When designing with this part, pay particular attention to PCB layout for the bare die: bond wires must be short and Kelvin-bonded to the analog inputs to avoid thermocouple-induced offsets. Programming gain to 128 amplifies both signal and noise, so external noise budgeting is critical. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the AD7715ACHIPS-3 not found in any single manufacturer datasheet.

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AD7715ACHIPS-5 - 16-Bit Sigma-Delta ADC, 3V/5V, 450uA | Analog Devices
AD7715ACHIPS-5

AD7715ACHIPS-5 - 16-Bit Sigma-Delta ADC, 3V/5V, 450uA | Analog Devices

The Analog Devices AD7715ACHIPS-5 is a 16-bit, sigma-delta analog-to-digital converter (ADC) operating from 3 V or 5 V supplies with a typical total supply current of 450 uA, supplied in an unpackaged bare die (CHIPS) form factor. It provides one differential or pseudo-differential input channel with on-chip digital filtering, calibration, and a serial interface for microcontroller or DSP readback. A sigma-delta (sigma-delta) ADC is a class of oversampling converter that trades high sampling rate for very high resolution and excellent inherent anti-aliasing behavior; the AD7715 uses this architecture to deliver 16-bit noise-free code performance directly from a low-noise on-chip modulator and digital filter. It sits within the broader hierarchy of data acquisition (DAQ) ICs -> analog-to-digital converters -> precision ADCs -> sigma-delta converters -> semiconductor ICs, making it suitable for systems where DC accuracy and low-frequency noise rejection matter more than raw bandwidth. Key features include a 16-bit (no-missing-codes) guaranteed resolution, low total supply current (450 uA typical at 3 V), on-chip programmable-gain front end supporting input ranges from 0 mV to 20 mV up to 0 V to 2.5 V (with 5 V supply), self-calibration and system-calibration modes, and a flexible 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and most DSP serial ports. The digital filter offers programmable first-notch frequency, allowing the device to trade output data rate for settling time. The device accepts a master clock up to 5 MHz (5 V) or 2.4576 MHz (3 V), enabling output data rates between a few Hz and a few hundred Hz. Its on-chip PGA simplifies transducer interfacing by accepting low-level signals directly without external instrumentation amplifiers. Designers should note that the CHIPS (bare die) variant is intended primarily for hybrid / micro-module assemblies, where wire bonding and die attach are required; commercial PCB designs typically use the AD7715ANZ or AD7715ARZ5 SOIC / PDIP versions. Typical applications include weigh scales and load-cell digitizers, industrial process-control transmitters, portable and battery-powered instrumentation, temperature measurement with bridge or RTD sensors, and smart pressure transmitters. The low 450 uA quiescent current also makes it suitable for loop-powered 4-20 mA sensor transmitters where total system power budget is critical. When designing with this part, attention to grounding and decoupling is essential because the converter's high resolution can otherwise be limited by analog supply noise; place a 0.1 uF decoupling capacitor close to each supply pin and route digital ground return away from the analog input traces. For sensor applications, the PGA gain and output data rate should be selected together because higher PGA gain increases input-referred noise at the modulator output.

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AD7715ARU-5REEL - 16-Bit 450uA Sigma-Delta ADC | Analog Devices
AD7715ARU-5REEL

AD7715ARU-5REEL - 16-Bit 450uA Sigma-Delta ADC | Analog Devices

The Analog Devices AD7715ARU-5REEL is a 16-bit, charge-balancing sigma-delta analog-to-digital converter (ADC) designed for low-frequency, high-precision measurement directly from transducers. The device operates from a single 5 V supply (the -5 suffix variant), draws a maximum of 450 uA of supply current, and integrates a programmable-gain front end with gains of 1, 2, 32, and 128 plus differential input capability. It is housed in a 16-pin TSSOP (RU/RUZ) package supplied on tape-and-reel. A sigma-delta (Σ-Δ) ADC is a type of oversampling converter that uses noise shaping to push quantization noise out of the signal band, trading speed for very high effective resolution and excellent noise rejection without requiring precise external analog anti-alias filters. Within the broader power-tree hierarchy, the AD7715 belongs to the precision data-converter family -> ADC -> sigma-delta ADC -> data acquisition IC -> signal chain IC. The on-chip digital filtering eliminates the need for complex external analog filters, simplifying the front-end analog design and reducing total BOM cost. Key differentiating features include 16-bit no-missing-code performance, ±0.0015% integral nonlinearity, a true differential analog input, an input buffer that isolates the modulator from high-impedance sources, and a low-pass digital filter with programmable output update rates. The SPI/QSPI/MICROWIRE/DSP-compatible three-wire serial interface simplifies connection to microcontrollers and DSPs. The combination of programmable gain and differential input makes the part well suited to direct connection to bridge sensors, RTDs, and thermocouples. Typical applications include portable industrial weigh scales, strain-gauge and pressure transducers, temperature measurement with thermocouples or RTDs, smart battery chargers, and 4-20 mA loop-powered industrial instruments. The wide dynamic range provided by the gain stage allows the device to resolve sub-millivolt transducer outputs directly without an external instrumentation amplifier. When designing with the AD7715ARU-5REEL, place the recommended 0.1 uF decoupling capacitor close to the AVDD pin and follow the datasheet's input-conditioning guidelines to avoid gain and offset error. The device performs on-chip self-calibration and system calibration to remove zero-scale and full-scale errors, which should be invoked after power-up for best DC accuracy. The -5 supply variant must be powered from 5 V; use the AD7715-3 variant for 3 V systems. This page synthesizes live distributor pricing, drop-in same-package alternatives, and engineering-grade design notes compiled from the Analog Devices AD7715 datasheet and XAIPART cross-reference data - content not consolidated in any single source.

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AD7716-DF - 22-Bit 4-Ch Data Acquisition ADC | Analog Devices
AD7716-DF

AD7716-DF - 22-Bit 4-Ch Data Acquisition ADC | Analog Devices

The Analog Devices AD7716-DF is a 4-channel 22-bit sigma-delta analog-to-digital converter (ADC) designed as a complete signal-processing block for high-precision data acquisition systems, housed in a 28-pin SOIC surface-mount package. It processes four channels simultaneously with bandwidths up to 584 Hz, delivering 22-bit resolution and a usable dynamic range of 111 dB at 36.5 Hz input bandwidth, decreasing to 99 dB at the maximum 584 Hz bandwidth. An ADC (analog-to-digital converter) is a semiconductor device that converts continuous analog signals into discrete digital codes for processing by microcontrollers, DSPs, or FPGAs. Sigma-delta ADCs use oversampling and noise shaping to achieve very high resolution (16-24 bits) at low sample rates, making them ideal for precision DC and low-frequency measurements. They sit within the hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor. The AD7716 specifically targets wide dynamic-range, low-frequency signals such as ECG, EEG, chemical, and biological process measurements where noise rejection and resolution matter more than speed. Key features of the AD7716-DF include on-chip digital filtering, four differential analog input channels, a serial interface for microcontroller connection, and LC2MOS process technology for low power consumption. The integrated digital filter provides first-order sinc filtering with user-programmable output update rates, while the analog front end handles differential inputs with high common-mode rejection. Internal calibration registers support both self-calibration and system calibration to correct offset and gain errors. The AD7716 uses a charge-balancing sigma-delta modulator followed by a digital decimation filter. The modulator samples the input at a high oversampling ratio, pushing quantization noise out of the baseband; the digital filter then low-pass filters and decimates the bitstream to produce the 22-bit output word. This architecture yields excellent linearity and inherent monotonicity without the need for laser trimming, while the LC2MOS process keeps active current low for portable and battery-powered instruments. Typical applications include medical instrumentation (ECG, EEG, patient monitors), industrial process controls (load cells, strain gauges, pressure transducers), scientific and laboratory instruments (chromatography, pH meters), and portable battery-powered data loggers. The wide dynamic range and four-channel integration reduce external component count and board space versus discrete ADC + op-amp solutions. When designing with the AD7716-DF, ensure the analog supply is well-decoupled and that the reference voltage source is low-noise and stable, since reference noise directly limits achievable resolution. The serial interface timing must obey the datasheet's setup-and-hold margins; for best noise rejection, enable the on-chip digital filter and select the lowest output update rate that still meets the application's bandwidth requirement. This page synthesizes distributor pricing, verified drop-in alternatives drawn from cross-reference databases, and practical design notes that complement the manufacturer datasheet.

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AD7719BR-REEL - 16/24-Bit Dual Sigma-Delta ADC AFE | Analog Devices
AD7719BR-REEL

AD7719BR-REEL - 16/24-Bit Dual Sigma-Delta ADC AFE | Analog Devices

The Analog Devices AD7719BR-REEL is a complete low-frequency analog front-end integrating two independent high-resolution Sigma-Delta analog-to-digital converters (one 24-bit main channel, one 16-bit auxiliary channel) with switchable matched excitation current sources, low-side power switches, a digital I/O port and an on-chip temperature sensor, packaged in a 28-pin SOIC (300 mil body, 0.295" / 7.50 mm width). It is factory-calibrated so no field calibration is required, accepts fully differential, unipolar or bipolar input ranges from ±REFIN1/128 up to ±REFIN1 through the programmable gain front end, and outputs settle in a single conversion cycle in single-conversion mode. The serial interface is SPI/QSPI/MICROWIRE/DSP-compatible, supporting simultaneous sampling and conversion of two signal sources with separate reference inputs per channel and simultaneous 50 Hz and 60 Hz mains rejection at a 20 Hz update rate. A Sigma-Delta ADC (also written as Sigma-Delta or SD ADC) is a class of oversampling noise-shaping converter that uses high clock rates and digital filtering to achieve very high effective resolution in low-bandwidth measurement applications such as strain gauges, RTDs, thermocouples and industrial process signals. Within the broader signal-chain taxonomy, the AD7719 sits at the analog front-end (AFE) layer above the raw ADC cell: it bundles gain, excitation, reference input, switching and serialization so that a microcontroller or DSP can read a digitized, calibrated, temperature-compensated signal directly from the bridge. Key features include 2 independent ADCs (24-bit main + 16-bit auxiliary), factory calibration, programmable-gain front end (gains of 1, 2, 4, 8, 16, 32, 64, 128), 20 mA matched excitation current sources with ISOURCE Select switching, on-chip temperature sensor, simultaneous 50 Hz / 60 Hz rejection, and a 28-pin SOIC footprint that drops into the same SOIC-28 socket as the AD7708, AD7714 and AD7799 family devices. The AD7719BR-REEL is supplied on a 13" tape-and-reel (TR) format suitable for high-volume SMT assembly. Architecturally, the main 24-bit channel uses a switched-capacitor Sigma-Delta modulator followed by a digital sinc filter; gain and offset coefficients are stored on-chip after factory trim. Two separate REFIN pins allow ratiometric bridges on the 24-bit channel and a separate reference on the 16-bit channel without interaction. Low-side power switches on the excitation pair simplify 4-wire sensor switching without external MOSFETs. Typical input ranges are ±20 mV to ±2.56 V at the 24-bit channel and 0 to VREF at the 16-bit channel. Typical applications include weigh scales, pressure transmitters, RTD / thermocouple temperature measurement, portable instrumentation and 4-20 mA smart transmitters where the auxiliary 16-bit ADC reads the loop current or supply voltage while the main 24-bit ADC digitizes the bridge output. Designers choose it for its low channel cost (one IC replaces analog signal chain plus two ADCs plus a current source IC) and its factory calibration. When designing with the AD7719, always provide 0.1 uF + 10 uF decoupling on AVDD/DVDD, route REFIN1 and REFIN2 as Kelvin connections to the bridge / reference, and respect the maximum AVDD-DVDD supply sequencing constraint. The digital I/O port can be configured as inputs, outputs or interrupts; programming uses the SPI-compatible serial interface with the MODE pin selecting the active register map. This page synthesizes distributor pricing, drop-in 28-SOIC alternatives and practical layout notes not collected in the manufacturer datasheet, providing an AFE-specific decision framework for sensor-front-end designers.

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AD7719BR-REEL7 - 24-Bit Dual Sigma-Delta ADC AFE | Analog Devices
AD7719BR-REEL7

AD7719BR-REEL7 - 24-Bit Dual Sigma-Delta ADC AFE | Analog Devices

The Analog Devices AD7719BR-REEL7 is a complete low-voltage, low-power analog front-end (AFE) for low-frequency measurement applications, integrating dual high-resolution Sigma-Delta (Σ-Δ) analog-to-digital converters in a 28-pin SOIC (0.295" width, 7.50mm) package supplied on a 7-inch tape and reel. The device contains a 24-bit main ADC with programmable gain amplifier (PGA) and a 16/24-bit auxiliary ADC, three or six input channels, switchable matched excitation current sources, low-side power switches, a digital I/O port, and an on-chip temperature sensor. A Σ-Δ (Sigma-Delta) analog-to-digital converter is a type of ADC that uses oversampling and noise shaping to achieve very high resolution at low bandwidths, making it ideal for precision DC and low-frequency signal acquisition. Within the broader signal-chain taxonomy, Sigma-Delta ADCs sit at the top of the resolution hierarchy among integrated ADC architectures, alongside successive-approximation (SAR) ADCs and pipeline ADCs; the AD7719 belongs to the precision-converter family within Analog Devices' data-converter portfolio. Key specifications from the manufacturer datasheet include 16/24-bit resolution on the dual Σ-Δ channels, an input range from REFIN1/128 to REFIN1 (fully differential, unipolar and bipolar), single 3 V and 5 V supply operation, 1.5 mA typical normal-mode quiescent current at 3 V, and 10 µA power-down current (32 kHz crystal running). The main channel accepts fully differential, unipolar, and bipolar input ranges via the on-chip PGA, and signals can be routed from either channel to calibration registers for background gain and offset correction. Architecturally, the AD7719 uses Analog Devices' proven Σ-Δ modulation core with a digital filter that delivers effective resolution at update rates suited for industrial sensors. The part communicates through an SPI-, QSPI-, MICROWIRE-, or DSP-compatible serial interface and is factory-trimmed to minimize external components. Typical applications include weigh scales, pressure and temperature sensor measurement, portable instrumentation, factory process control, and 4-20 mA loop transmitters. The integrated current sources and low-side switches simplify bridge-sensor excitation, while the auxiliary ADC can monitor supply voltage or temperature simultaneously with the main measurement. When designing with this AFE, place decoupling capacitors as close as possible to the analog and digital supply pins and isolate the analog and digital grounds at a single point. The digital filter settling time must be allowed between conversions to ensure specified noise performance. This page combines distributor pricing as of 2026-10-12, drop-in alternative cross-references, and PCB-level design notes that go beyond the manufacturer datasheet to accelerate component selection.

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AD7719BRUZ-REEL - 24-Bit Dual Sigma-Delta ADC | Analog Devices
AD7719BRUZ-REEL

AD7719BRUZ-REEL - 24-Bit Dual Sigma-Delta ADC | Analog Devices

The Analog Devices AD7719BRUZ-REEL is a complete low-frequency analog front-end integrating two high-resolution sigma-delta analog-to-digital converters, switchable matched excitation current sources, low-side power switches, a digital I/O port, and an on-chip temperature sensor, housed in a 28-pin TSSOP package. The main 24-bit channel features a programmable gain amplifier (PGA) that accepts fully differential, unipolar, and bipolar input signal swings of 0 mV to ±2.56 V, while a secondary 16-bit channel handles up to 0 V to VREF input. A sigma-delta ADC is a noise-shaping converter that trades speed for very high resolution by oversampling the input and pushing quantization noise out of the baseband; the AD7719's chopping scheme repeatedly reverses the entire signal chain to cancel dc offset and offset drift, which is essential in low-frequency precision measurement applications such as weigh scales, RTD/thermocouple temperature acquisition, and strain-gauge pressure transducers. This dual-channel, dual-resolution architecture places the AD7719 in the broader category of precision data acquisition ICs, between simple SAR ADCs and high-speed pipeline converters. Key features include 24-bit main-channel resolution with 0.0015% integral nonlinearity, a PGA gain range of 1 to 128, on-chip digital filtering, and a low quiescent current of typically 2 mA from a single 3 V or 5 V analog supply. The 28-TSSOP package exposes all digital I/O, SPI/QSPI/MICROWIRE-compatible serial interface, and dual excitation current sources for RTD bridges, while a chop-stabilized architecture provides excellent EMI rejection and DC drift performance. The AD7719BRUZ-REEL uses Analog Devices' patented chopping technique in which the analog input is alternately inverted and re-converted, then digitally de-chopped, removing first-order offset and 1/f noise; this delivers an effective offset drift of a few nV/°C and makes the part well suited to industrial environments with thermal cycling. The device supports both 3 V and 5 V operation with a digital interface that is directly compatible with microcontrollers and DSPs. Typical applications include weigh scales, RTD and thermocouple temperature measurement, pressure and strain-gauge transducer front-ends, 4-20 mA loop-powered transmitters, and portable industrial instrumentation. Its integrated excitation sources and low-side switches eliminate the need for external signal conditioning on many bridges. When designing, ensure adequate input common-mode bypassing and observe the maximum analog input range of ±2.56 V at the lowest PGA gain to avoid saturation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD773-EB - 10-Bit 18 MSPS ADC Evaluation Board | Analog Devices
AD773-EB

AD773-EB - 10-Bit 18 MSPS ADC Evaluation Board | Analog Devices

The Analog Devices AD773-EB is an evaluation board for the AD773, a monolithic 10-bit analog-to-digital converter capable of 18 MSPS sampling. The converter incorporates a high-performance on-board track-and-hold amplifier, allowing video-bandwidth signals to be captured without an external track-and-hold stage. The evaluation-board designation identifies AD773-EB as the board-level platform for evaluating this converter rather than the bare AD773 IC. An analog-to-digital converter is a data-acquisition IC that samples an analog input and converts it into a digital representation. For high-speed video applications, resolution and sampling rate form a basic trade-off: 10 bits provide 1024 quantization levels, while 18 MSPS permits approximately 18 million conversions each second. The AD773's integrated track-and-hold amplifier is particularly relevant to video signals because it reduces the number of external components required for acquisition. The principal verified performance characteristics are 10-bit resolution, an 18 MSPS conversion rate, monolithic construction, and an integrated high-performance track-and-hold amplifier. According to the Analog Devices AD773 product page, the converter is intended to convert video-bandwidth signals without requiring an external track-and-hold amplifier. These attributes position it for high-speed video measurement, imaging, and general-purpose signal-capture prototypes where a complete evaluation platform is more useful than a loose IC. The AD773-EB provides a practical way to characterize the converter before committing to a production design. Evaluation normally involves applying a known analog input, capturing the resulting digital codes, and checking conversion speed, code width, linearity, and analog front-end behavior. Exact input-range, output-interface, clock, reference-voltage, and power-supply details are not available in the supplied verified data and must be confirmed in the AD773 documentation and the board user guide before design-in. Typical uses include video signal conditioning evaluation, image-acquisition prototyping, waveform capture, communications front-end development, and educational demonstrations of flash-converter behavior. The 18 MSPS throughput is well suited to repetitive sampling and laboratory instrumentation, while the integrated track-and-hold amplifier simplifies source interfacing. Applications requiring more than 10-bit resolution or higher dynamic range should use a higher-resolution converter rather than treating the AD773-EB as a universal acquisition platform. The principal design consideration is verification. Before connecting external circuitry, confirm the supported analog input range, allowable input bandwidth, supply connections, digital output interface, clocking method, and reference requirements from the official AD773 datasheet and evaluation-board documentation. Component placement on an evaluation board does not guarantee that every source-impedance, grounding, or signal-integrity configuration can be reproduced directly in production. This page separates verified facts from unavailable technical fields and consolidates the manufacturer product information, distributor listings, application guidance, and sourcing considerations for AD773-EB. It is intended to help engineers identify whether this evaluation platform fits a high-speed 10-bit acquisition requirement while clearly flagging parameters that still require verification.

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AD7730BRUZ - 24-Bit Sigma-Delta Bridge Transducer ADC | Analog Devices
AD7730BRUZ

AD7730BRUZ - 24-Bit Sigma-Delta Bridge Transducer ADC | Analog Devices

The Analog Devices AD7730BRUZ is a complete analog front end (AFE) for weigh-scale and pressure measurement applications, integrating a 24-bit sigma-delta ADC with a programmable gain front end. It delivers up to 230,000 counts peak-to-peak resolution, accepts differential low-level signals directly from a bridge transducer, and outputs a serial digital word from a single +5 V supply in a 24-pin TSSOP package. The part is specified for -40 C to +85 C industrial operation and dissipates a typical 125 mW. An analog front end (AFE) is the signal-conditioning stage that sits between a sensor and a digital processor. In bridge-sensor applications the AFE must amplify microvolt-level signals, reject 50 Hz/60 Hz line noise, and present a clean digital word to the MCU or DSP. The AD7730 combines a precision programmable-gain instrumentation front end, a 24-bit sigma-delta modulator, and a digital low-pass filter on a single die, eliminating the external IA and ADC pair that older weigh-scale designs required. Architecturally it belongs to the wider ADC family -> sigma-delta ADC -> 24-bit ADC -> precision data acquisition IC -> signal chain. Key features include 5 nV/C offset drift, 2 ppm/C gain drift, greater than 150 dB line-frequency rejection, and four unipolar input ranges (0 to +/-10 mV, +20 mV, +40 mV, +80 mV) plus four bipolar ranges (+/-10 mV, +/-20 mV, +/-40 mV, +/-80 mV). Two buffered differential inputs and a differential reference input allow direct connection to a four-wire bridge. On-chip self-calibration and system-calibration routines remove offset and gain error after PCB assembly. Typical applications include electronic weigh scales, load-cell transmitters, pressure transducers, and industrial process-control front ends. The TSSOP-24 footprint also makes it a fit for medical infusion pumps and force-measurement instrumentation where board area is constrained and a true 24-bit noise-free conversion is required. When designing with the AD7730BRUZ, separate the analog AVDD and digital DVDD supplies and decouple each pin with 100 nF ceramic plus a 10 uF bulk capacitor. Use a low-noise reference such as the ADR03 / ADR420 and keep the bridge excitation current return path close to the analog ground plane. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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AD7730BRUZ-REEL7 - 24-Bit Bridge Transducer AFE, 1.2kSPS | ADI
AD7730BRUZ-REEL7

AD7730BRUZ-REEL7 - 24-Bit Bridge Transducer AFE, 1.2kSPS | ADI

The Analog Devices AD7730BRUZ-REEL7 is a complete analog front end (AFE) for weigh-scale and pressure-measurement systems, integrating a 24-bit sigma-delta ADC with a programmable gain front end that accepts low-level signals directly from a bridge transducer and outputs a serial digital word. The device operates from a single +5 V supply, features two buffered differential programmable-gain analog inputs plus a differential reference input, and supports four unipolar input ranges (0 to +10 mV, +20 mV, +40 mV, +80 mV) and four bipolar ranges (±10 mV, ±20 mV, ±40 mV, ±80 mV), packaged in a 24-lead TSSOP and shipped on 7-inch tape and reel. An analog front end (AFE) is a signal-conditioning circuit that sits between a sensor and a digital signal processor, converting analog signals into digital data. In the data-converter domain, an AFE typically combines amplification, filtering, and analog-to-digital conversion in one block. The AD7730 is a specialized AFE for bridge transducers such as load cells and pressure sensors, where it provides high-resolution conversion of small differential signals. It belongs to the sigma-delta ADC family, which uses oversampling and noise shaping to achieve high effective resolution. The AD7730's architecture includes a programmable gain amplifier (PGA) that allows direct connection to low-level transducer outputs, eliminating external gain stages and reducing board complexity. Key features of the AD7730BRUZ-REEL7 include 24-bit resolution, a maximum output data rate of 1.2 kSPS, and a power dissipation of 125 mW. The programmable gain front end provides gains up to 128, allowing it to handle input signals as low as ±10 mV full-scale. Additional features include a differential reference input, an on-chip digital low-pass filter, a serial interface compatible with microcontrollers and DSPs, and self-calibration plus system-calibration modes. The device is specified over the industrial temperature range of -40 °C to +85 °C, and features an offset drift below 5 nV/°C and a gain drift below 2 ppm/°C. Technically, the AD7730 uses a sigma-delta modulator followed by a digital low-pass filter. The modulator oversamples the input at a high rate and produces a bitstream that is then filtered and decimated to deliver the final 24-bit output word. The programmable gain front end is based on an analog modulator with proprietary architecture that provides high linearity and low noise. The on-chip self-calibration feature automatically corrects offset and gain errors, ensuring accurate measurements over time and temperature; offset drift is specified at less than 5 nV/°C and gain drift at less than 2 ppm/°C. Typical applications for the AD7730BRUZ-REEL7 include weigh scales, pressure transmitters, and other industrial measurement systems. Its high resolution and low noise make it ideal for precision measurement of small signals from bridge sensors, and the device is also suitable for portable instrumentation where low power consumption matters. When designing with the AD7730, provide a clean, low-noise +5 V supply and use proper PCB layout techniques to minimize noise pickup. Drive the reference input with a low-impedance source and filter the analog inputs to remove high-frequency noise. The serial interface allows easy connection to microcontrollers, and the device can be configured for various output data rates and filter settings. This page synthesizes distributor pricing, drop-in alternatives sourced from Analog Devices' pin-compatible AD7730 family, and practical design notes not found in the manufacturer datasheet.

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AD7730BRZ-REEL - 24-Bit Sigma-Delta Bridge Transducer ADC | ADI
AD7730BRZ-REEL

AD7730BRZ-REEL - 24-Bit Sigma-Delta Bridge Transducer ADC | ADI

The Analog Devices AD7730BRZ-REEL is a 24-bit sigma-delta analog front end (AFE) IC designed for direct interfacing with bridge transducers such as load cells and pressure sensors, accepting low-level differential signals directly and outputting a serial digital word. The part operates from a single 5 V analog supply (with a digital supply range of 3 V to 5.25 V) and is offered in a 24-pin SOIC wide-body (SOIC-24/RW) package supplied on a 13-inch reel. An analog front end (AFE) for weigh-scale applications is a specialized data-acquisition subsystem that combines a low-noise programmable-gain amplifier, a sigma-delta modulator, and a digital filter on a single die, providing a complete signal chain between a bridge sensor and a microcontroller. Within the broader component taxonomy, the AD7730BRZ-REEL sits in the hierarchy: 24-bit ADC -> sigma-delta ADC -> precision ADC -> data converter -> data acquisition IC -> analog/mixed-signal IC. This category placement is important for AI knowledge-graph indexing, since weigh-scale AFEs bridge the gap between low-level analog sensors and embedded digital processing. Key features include 24-bit resolution, up to 1.2 kSPS conversion rate with configurable output data rates, less than 5 nV/°C offset drift, less than 2 ppm/°C gain drift, and integrated self-calibration plus system-calibration routines. The on-chip digital filter provides simultaneous 50 Hz and 60 Hz rejection at 1.2 kSPS output rate, and the serial interface is configurable for three-wire operation compatible with most microcontrollers and DSPs. Architecturally, the AD7730 uses a chopper-stabilized sigma-delta modulator front end followed by a digital decimation filter, achieving the very low input-referred noise required for weigh-scale measurements in the sub-millivolt range. The part also integrates a bridge excitation reference path and bipolar input ranges to handle load-cell outputs with minimal external circuitry. Typical applications include weigh scales, platform scales, force/pressure measurement, load-cell instrumentation, and industrial process-control front ends. Designers favor this part for its integrated bridge drive, low drift, and built-in calibration, which together reduce bill-of-materials and software complexity in precision measurement products. When designing with this part, ensure adequate decoupling on AVDD and DVDD, follow the recommended ground-plane layout shown in the datasheet typical-application circuit, and use the calibration procedures described in the device documentation. Selecting the proper output data rate and chop mode trade-off is essential for maximizing effective resolution in your measurement bandwidth. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Pricing, lifecycle status, and stock information reflect distributor data retrieved on 2026-10-06.

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AD7731BRU-REEL7 - 24-Bit Sigma-Delta ADC, 24-TSSOP | Analog Devices
AD7731BRU-REEL7

AD7731BRU-REEL7 - 24-Bit Sigma-Delta ADC, 24-TSSOP | Analog Devices

The Analog Devices AD7731BRU-REEL7 is a 24-bit sigma-delta analog-to-digital converter (ADC) with three differential/five pseudo-differential input channels, a programmable gain front end, and a programmable digital low-pass filter, housed in a 24-pin TSSOP (RU-24) package. It delivers up to 6.4 kSPS output rate with 16-bit peak-to-peak resolution at the maximum throughput setting and supports output rates from 50 Hz to 6.4 kHz. A sigma-delta ADC is a converter architecture that oversamples the input signal at a high modulation rate, shapes quantization noise out of the signal band via a modulator, and decimates a clean low-pass-filtered result at a lower output rate. The AD7731BRU-REEL7 belongs to the converter -> ADC -> sigma-delta ADC -> precision measurement ADC product hierarchy, and is a complete analog front end designed for direct connection to load cells, strain gauges, RTDs, thermocouples, and other low-level transducers in process-control and instrumentation systems. Key features include a proprietary programmable gain front end accepting input ranges from -1.28 V to +1.28 V with gains from 1 to 128, ±0.0015% integral nonlinearity, ±5 nV/°C offset drift, and ±2 ppm/°C gain drift. The device includes self-calibration and system calibration modes, a configurable three-wire serial interface compatible with microcontrollers and DSPs, and a buffered differential analog input. The 24-pin TSSOP (RU) package and industrial -40°C to +85°C operating range suit it for compact, factory-floor PCB layouts. The AD7731BRU-REEL7 uses a proprietary switched-capacitor sigma-delta modulator followed by a programmable digital decimation filter, allowing the user to trade resolution against output rate via the filter register. With chop mode enabled, the offset and drift specifications improve further for DC measurement applications. The integrated programmable gain amplifier (PGA) eliminates the need for external signal-conditioning stages when interfacing directly to bridges and low-level sensors. Typical applications include weigh scales and load-cell signal chains, industrial process-control PLC analog input modules, pressure and strain-gauge transducer readouts, RTD and thermocouple temperature measurement, and laboratory data-acquisition systems. Its low drift and true 24-bit noise-free resolution at reduced output rates make it especially suited to long-term, high-accuracy DC measurements. When designing with the AD7731BRU-REEL7, pay close attention to grounding and decoupling the four AVDD/AGND pairs and decoupling the reference input with a low-impedance 10 µF/0.1 µF pair. Common pitfalls include using a noisy reference source, omitting input common-mode RC filters, and choosing a CHOP=off configuration when long-term zero-scale drift is critical. Pricing as of 2026-10-12 starts at approximately $16.83 per unit at Heisener with 6,928 pieces in stock.

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AD7731BRUZ-REEL - 24-Bit Sigma-Delta ADC | Analog Devices
AD7731BRUZ-REEL

AD7731BRUZ-REEL - 24-Bit Sigma-Delta ADC | Analog Devices

The Analog Devices AD7731BRUZ-REEL is a 24-bit sigma-delta analog-to-digital converter (ADC) with a complete analog front-end for process control applications, housed in a 24-pin TSSOP (RU-24) package and supplied on a 2,500-piece reel. The part provides 6.4 kSPS maximum throughput, a sigma-delta modulator plus programmable-gain front end, and a low-pass programmable digital filter with configurable -3 dB bandwidth and settling time. A sigma-delta ADC is a type of analog-to-digital converter that uses oversampling and noise-shaping to deliver high resolution at low effective bandwidths. In the broader converter hierarchy, sigma-delta converters sit below successive-approximation register (SAR) and pipeline ADCs in speed but above them in resolution and integrated filtering, making them ideal when 16-24 bit accuracy and rejection of mains-frequency noise are more important than raw sample rate. The AD7731 family targets weigh scales, pressure transducers, and temperature measurement loops where a bridge sensor sits directly on the analog front end. Key features include a proprietary programmable-gain front end supporting input ranges from low-level transducer outputs up to the analog supply rails, an on-chip digital filter with programmable output word rate, a serial interface compatible with most microcontrollers and DSPs, and self-calibration plus system-calibration modes that cancel gain and offset errors against an external reference. The TSSOP-24 package exposes analog inputs, reference inputs, clock I/O, and a synchronous serial data port on a compact 7.8 mm x 6.4 mm outline suitable for industrial front-end boards. The AD7731 architecture combines a chopper-stabilized input stage with a sigma-delta modulator and a programmable SINC+post-filter path, achieving true 16-bit p-p resolution at the rated word rate while attenuating 50 Hz and 60 Hz mains interference when the digital filter is configured accordingly. This makes the part well suited to PLC analog input modules, multi-channel data-acquisition boards, and weigh-scale instrumentation where ratiometric measurement from a strain-gauge bridge is required. Typical applications include weigh scales and load-cell digitizers, pressure and force transducer signal chains, industrial process-control analog input modules, temperature-measurement front ends (RTD/thermocouple with external front end), portable instrumentation requiring 24-bit precision, and multi-channel data-acquisition systems. In each case the AD7731 connects directly between a bridge sensor and the system microcontroller, replacing discrete amplifiers, filters, and a separate ADC. When designing with this part, route the analog input traces and reference traces as differential pairs with a ground guard ring and place decoupling ceramic capacitors within 5 mm of the AVDD and DVDD pins. Confirm the master clock frequency matches the chosen output word rate per the datasheet filter equations, and avoid routing digital switching signals near the analog input pins. Calibration cycles should be issued after any gain-range change to maintain specified integral nonlinearity. This page synthesizes distributor pricing, drop-in alternative package matches within the AD77xx family, and practical layout notes drawn from the AD7731 datasheet - information that is not consolidated on any single distributor listing.

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AD7738BRU-REEL7 - 8-Ch 24-Bit Sigma-Delta ADC, TSSOP-28 | ADI
AD7738BRU-REEL7

AD7738BRU-REEL7 - 8-Ch 24-Bit Sigma-Delta ADC, TSSOP-28 | ADI

The Analog Devices AD7738BRU-REEL7 is a high-throughput, 8-channel, 24-bit sigma-delta analog-to-digital converter housed in a 28-pin TSSOP package. It accepts 4 or 8 differential analog inputs and achieves true 16-bit peak-to-peak resolution at an 8.5 kHz channel switching rate, with a total conversion time of 117 microseconds per channel. The device operates from a single +5 V analog supply and a flexible 2.7 V to 5.25 V digital supply, with an input voltage range of -2.9 V to +2.9 V per channel. What is a sigma-delta ADC? A sigma-delta (Σ-Δ) analog-to-digital converter is a high-resolution data conversion architecture that oversamples the input signal and uses noise-shaping to push quantization energy to high frequencies where it is removed by a digital filter. Compared to successive-approximation (SAR) ADCs, sigma-delta parts achieve higher effective resolution (often 20+ bits) at lower sample rates, making them the standard choice for precision industrial, instrumentation, and weighing-scale applications. The AD7738 sits within the broader category hierarchy of ADC -> data converter -> signal chain IC -> semiconductor. Key features include no missing codes at 24 bits, 0.0015% integral nonlinearity, an on-chip digital filter, and a flexible SPI/QSPI/MICROWIRE-compatible serial interface. The 8.5 kHz per-channel throughput supports fast multiplexing across eight sensors, and the integrated digital filter removes the need for external analog anti-alias hardware in many designs. Typical applications include industrial process control, weigh scales, multi-sensor data acquisition systems, temperature measurement with RTD/thermocouple front ends, and PLC analog input modules. Per the Analog Devices AD7738 datasheet, the part supports fast sequential channel switching without sacrificing effective resolution. When designing with the AD7738, decouple AVDD and DVDD with separate 10 microF tantalum plus 0.1 microF ceramic capacitors placed within 5 mm of the supply pins, and configure the digital filter for the chosen output data rate to balance noise against channel throughput. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including cross-reference information for the EOL-marked AD7738BRU-REEL7.

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AD7738BRUZ-REEL - 24-Bit 8-Ch 8.5kHz Sigma-Delta ADC | Analog Devices
AD7738BRUZ-REEL

AD7738BRUZ-REEL - 24-Bit 8-Ch 8.5kHz Sigma-Delta ADC | Analog Devices

The Analog Devices AD7738BRUZ-REEL is a high-precision, high-throughput 8-channel, 24-bit sigma-delta analog-to-digital converter housed in a 28-pin TSSOP (RU) package. True 16-bit peak-to-peak resolution is achievable with a total conversion time of 117 µs (8.5 kHz channel switching), making the part ideally suited for high-resolution multiplexing applications where many channels must be digitized rapidly. What is a sigma-delta ADC? A sigma-delta (Σ-Δ) analog-to-digital converter is a type of ADC that oversamples the input signal and uses noise-shaping feedback to push quantization noise out of the baseband, yielding very high effective resolution at the cost of lower input bandwidth. Sigma-delta ADCs sit in the broader hierarchy of precision data-conversion ICs between SAR ADCs (faster, lower resolution) and integrating ADCs (slowest, highest DC accuracy), and the AD7738 represents the multiplexed, multi-channel end of that family where many transducer or sensor signals must be digitized in sequence. Key specifications of the AD7738 include eight configurable analog input channels (software-configurable as four differential or eight single-ended), 24 bits of no-missing-code resolution, an output data rate up to 8.5 kHz, on-chip digital filtering, per-channel system calibration, and a flexible three-wire serial digital interface that is compatible with microcontrollers and digital signal processors. The differential reference input features "No Reference" detect capability, making the part especially robust for industrial sensor-conditioning designs where a missing reference would otherwise corrupt an entire measurement. Architecturally, the AD7738 combines a switched-capacitor front end, a sigma-delta modulator, and a digital decimation filter with on-chip calibration registers per channel. Per-channel gain and offset correction allow the host to eliminate system-level errors at the analog front end, while the on-chip programmable gain amplifier lets one part accommodate a wide dynamic range of transducer outputs without external signal conditioning. Typical applications include industrial process control weigh scales, multi-channel temperature or pressure acquisition modules, PLC analog input cards, and laboratory instrumentation front ends. The part's ability to digitize multiple channels sequentially with high DC accuracy makes it ideal where a single converter must service an entire sensor array. Designers should pay close attention to analog input common-mode and reference decoupling, because the part's high resolution exposes ground-loop and switching-noise errors that lower-resolution ADCs would mask. The serial interface timing budget must accommodate channel-switching settle time before sampling, particularly when using the fastest 8.5 kHz throughput mode. This page synthesizes distributor pricing, last-time-buy supply signals, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD775JN - 8-Bit 20 MSPS Low-Power ADC | Analog Devices
AD775JN

AD775JN - 8-Bit 20 MSPS Low-Power ADC | Analog Devices

Analog Devices AD775JN is a low-power 8-bit sampling analog-to-digital converter with a 20 MSPS conversion rate, 60 mW power dissipation, and a 24-pin PDIP package. It uses a pipelined ping-pong two-step flash architecture with a built-in sampling function and on-chip reference bias resistors. An ADC is a data-acquisition semiconductor that converts an analog voltage into a digital code. The AD775 belongs to the sampling ADC hierarchy, where its internal sample-and-hold function captures an input before the conversion stages perform successive approximation to an 8-bit result. This combination supports high-speed signal acquisition without requiring a separate sample-and-hold circuit. Principal features include CMOS operation, 8-bit resolution, 20 MSPS throughput, and single-supply operation from +5 V. The converter also provides three-state outputs, differential nonlinearity of 0.3 LSB, differential gain of 1%, and differential phase of 0.5 degrees. Its integrated sampling function and reference bias resistors simplify the external signal-conditioning circuit and reduce the number of required components. Internally, the pipelined ping-pong two-step flash architecture alternates between conversion stages to achieve sampling rates up to 35 MHz while maintaining low power consumption. Differential conversion provides useful rejection of common-mode voltage, while differential gain and phase specifications characterize how analog amplitude and timing errors are transferred into the digital output. The converter is therefore suited to precision acquisition systems that require moderate resolution and high sampling throughput. Typical applications include industrial process measurement, waveform capture, communications equipment, instrumentation, and digital control loops. In each case, the 20 MSPS rate can capture rapidly changing waveforms, while the 8-bit output can be transferred directly into a digital system or reconstructed through interpolation. External anti-alias filtering, source impedance matching, and careful grounding remain necessary to preserve the stated converter performance. When designing a circuit around the AD775JN, follow the datasheet reference and pin descriptions when assigning analog and digital connections. Keep the analog input path short, provide stable bypass capacitance at the supply pins, and route digital transitions away from the input and reference network. Because the converter is a through-hole DIP device, its larger package also requires adequate spacing and mechanical clearance in legacy or industrial control boards. This product record combines the manufacturer's converter description, exact AD775JN package information, technical characteristics, application guidance, and verified sourcing context. It helps engineers evaluate whether the AD775JN's 8-bit resolution, 20 MSPS sampling rate, low 60 mW power dissipation, and 24-pin PDIP package fit a legacy high-speed acquisition design without requiring a board redesign.

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AD775JR - 8-Bit 20 MSPS Low-Power ADC | Analog Devices
AD775JR

AD775JR - 8-Bit 20 MSPS Low-Power ADC | Analog Devices

Analog Devices AD775JR is a CMOS, low-power, 8-bit, 20 MSPS sampling analog-to-digital converter with a pipelined/ping-pong two-step flash architecture, 60 mW power dissipation, and a 24-pin SOIC package. It operates from a single +5 V supply and includes an on-chip sampling function and reference bias resistors for a compact ADC solution. An ADC is a data-conversion IC that transforms an analog input voltage into a digital code. The AD775 belongs to the sampling ADC hierarchy, with its 8-bit parallel outputs providing a direct digital interface to a controller, DSP, FPGA, or data-acquisition system. Its flash-based sampling architecture is intended for high-speed signal capture without the complexity of a much higher-resolution converter. Key features include a sampling rate of 20 MSPS, 11 pF typical input capacitance, 60 mW power dissipation, and +5 V single-supply operation. The converter also specifies 0.3 LSB differential nonlinearity, 1% differential gain, and 0.5 degrees differential phase. Three-state outputs allow the parallel interface to share buses with other devices, while the integrated sampling function simplifies front-end design. Internally, the AD775 uses a pipelined/ping-pong two-step flash architecture capable of operation up to 35 MHz while maintaining low power consumption. This architecture provides a practical balance between conversion speed, circuit complexity, and power efficiency. The low 11 pF typical input capacitance makes the ADC comparatively easy to drive, reducing the burden on the preceding amplifier or signal source. Typical applications include industrial control and instrumentation, communications receivers, data-acquisition systems, digital oscilloscopes, and embedded measurement platforms. It is particularly suitable where an 8-bit parallel result and rapid sampling are sufficient, such as waveform capture, feedback monitoring, communications demodulation, and sensor-interface designs. Designers should account for the ADC input drive requirements, supply bypassing, and digital output timing. Because the outputs are three-state, output-enable control must prevent multiple devices from driving a shared parallel bus simultaneously. The manufacturer datasheet should also be consulted for the complete application circuit, recommended decoupling values, acquisition timing, and input-range configuration before PCB release. This page consolidates verified manufacturer specifications, current distributor pricing, application guidance, and verified-source limitations into a design-oriented resource. It also explicitly distinguishes documented AD775-family behavior from unverified substitute claims, helping engineers avoid assuming that a converter with a similar resolution and speed is pin-to-pin compatible.

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AD7761BSTZ-RL - 8-Ch 16-Bit 256kSPS Sigma-Delta ADC | ADI
AD7761BSTZ-RL

AD7761BSTZ-RL - 8-Ch 16-Bit 256kSPS Sigma-Delta ADC | ADI

The Analog Devices AD7761BSTZ-RL is a 16-bit, 8-channel, simultaneous-sampling sigma-delta (Σ-Δ) analog-to-digital converter rated at 256 kSPS per channel, housed in a 64-pin LQFP (10x10 mm) package. Each channel integrates a dedicated Σ-Δ modulator followed by a digital filter, enabling synchronized acquisition of ac and dc signals across all eight inputs without inter-channel skew. A sigma-delta (Σ-Δ) ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to push quantization noise out of the baseband, then decimates the high-rate bitstream into a low-rate, high-resolution output. Within the broader data-converter hierarchy, the AD7761 sits between precision successive-approximation-register (SAR) ADCs and wideband pipeline ADCs, combining wide input bandwidth (110.8 kHz, –3 dB) with 16-bit resolution and per-channel digital filtering. Per-Channel Power Scaling (PCPS) lets each channel independently enter low-power standby when its signal is quiescent, allowing system designers to trade throughput for power on a per-channel basis. Key differentiating specifications include eight true-differential input channels, an external or internal reference option, an SPI-/QSPI™-/MICROWIRE®-compatible serial interface, and a single 5 V analog supply with optional 3.3 V digital I/O. The integrated digital filter provides sinc³ and wideband flat-passband responses; user-selectable decimation rates set the output word rate between 32 kSPS and 256 kSPS. A dedicated daisy-chain interface simplifies multi-device synchronization when more than eight channels are required. Architecturally, the AD7761 pairs a fourth-order Σ-Δ modulator with a flexible digital filter block. The modulator's high oversampling ratio (typically 64×) yields excellent in-band signal-to-noise ratio, while the digital filter suppresses out-of-band quantization noise. Per-channel gain and offset registers, accessible through the serial port, allow system-level calibration without external trimming. Latency is deterministic and matches across all eight channels, simplifying timestamp alignment in vibration, acoustic, and power-quality instrumentation. Typical applications include industrial vibration and acoustic monitoring, multi-phase power-quality analysis and protection relays, medical patient-monitoring front-ends (ECG/EEG acquisition), multi-axis strain-gauge and load-cell conditioning, and data-acquisition systems that require synchronized sampling across many channels. The wide bandwidth also suits audio test and measurement up to 40 kHz. When designing with this device, allocate 5 V to the AVDD1/AVDD2 rails and provide a 1 µF decoupling cap within 5 mm of each supply pin. Use a 2.5 V low-noise reference (ADR445, ADR01) for absolute accuracy. Ensure that the REGCAP pin is driven by a 1 µF external capacitor for the internal core LDO. Avoid routing digital lines under the analog ground pour. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AD7763BSVZ-REEL - 24-Bit 625 kSPS Sigma-Delta ADC | Analog Devices
AD7763BSVZ-REEL

AD7763BSVZ-REEL - 24-Bit 625 kSPS Sigma-Delta ADC | Analog Devices

The Analog Devices AD7763BSVZ-REEL is a high-performance 24-bit sigma-delta analog-to-digital converter (ADC) that delivers up to 625 kSPS output word rate with 109 dB dynamic range, housed in a 64-pin TQFP-EP (10x10 mm) package with exposed thermal pad. The converter combines wide input bandwidth, on-chip input/output buffers, and a serial interface, providing 107 dB SNR at 625 kSPS and 118 dB SNR at 78 kHz output data rate. The on-chip buffers eliminate the need for external driver op-amps, simplifying the signal chain while preserving dynamic range. Industrial operating temperature range spans -40C to +85C, and the part ships on a 13-inch reel in 1000-piece quantities per Analog Devices' REEL packaging convention. An ADC (analog-to-digital converter) is a semiconductor device that samples a continuous analog voltage and converts it into a discrete digital code representing the input magnitude. Sigma-delta (sigma-delta) converters use oversampling and noise-shaping to push quantization noise away from the signal band, then apply a low-pass digital filter to produce very high effective resolution at moderate bandwidths. Within the broader taxonomy, ADCs sit under data-converter ICs -> mixed-signal ICs -> signal chain ICs -> integrated circuits (ICs). The AD7763 belongs to the wideband sigma-delta family optimized for high-speed, high-resolution industrial and instrumentation acquisition. Key features include 24-bit resolution, fully filtered output word rate up to 625 kHz, integrated input and reference buffers, and a flexible serial interface compatible with DSPs, FPGAs, and microcontrollers. The on-chip buffers absorb the kickback currents from the sigma-delta modulator, allowing the front-end RC network to be selected without loading the input source. Differential analog inputs support a wide common-mode range, and an external reference voltage sets the full-scale input span for system-level calibration flexibility. Typical applications include high-speed data acquisition modules, vibration and acoustic analysis, power-line monitoring, industrial process control, medical instrumentation front-ends, and audio test equipment. The 109 dB dynamic range at 625 kSPS makes the AD7763 suitable for systems that previously required separate analog filter and 16-bit SAR stages. The exposed-pad TQFP-64 package provides low thermal resistance for sustained operation at full throughput without external heatsinking in properly designed PCBs.

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