ADC/DAC
Mga Produkto (2,700+)
AD573JP - 10-Bit SAR ADC with Parallel Output | Analog Devices
The Analog Devices AD573JP is a complete 10-bit successive-approximation analog-to-digital converter with integrated reference, clock, comparator, successive-approximation register, DAC, and three-state output buffers, packaged in a 20-pin PLCC. It converts one single-ended analog input into a 10-bit parallel digital result. The verified product information identifies the AD573 as a 10-bit SAR ADC with a typical conversion time of 20 µs, no missing codes over temperature, and operation using +5 V and -12 V or -15 V supplies. The AD573JP is specified for 20-PLCC, 9 x 9 mm packaging and is offered by distributors as a single-input, single-channel ADC. An ADC is an analog-to-digital converter, a category of data-conversion ICs that translates a continuously varying voltage into a numeric value. The AD573's successive-approximation architecture is a complete mixed-signal subsystem rather than only a comparator or front end. Within the hierarchy of semiconductor components, the AD573JP is an ADC, then a data-converter IC, then an integrated circuit. Its internal reference and parallel bus make it useful when an embedded controller needs direct digital access without an external reference or serial conversion interface. Key features include complete 10-bit conversion, integrated voltage reference and clock circuitry, parallel microprocessor-bus-compatible output, and three-state output buffers. The converter uses a successive-approximation conversion process rather than a flash or pipeline architecture. Its parallel interface can connect directly to suitable digital bus logic or microprocessor input circuitry, reducing the need for a serial protocol. The specified power-supply arrangement supports +5 V and either -12 V or -15 V analog supplies, so the device is intended for systems able to provide the required positive and negative rails. The AD573 architecture is relevant where a moderate-resolution measurement must be acquired deterministically and presented in parallel. Because the converter includes a DAC, voltage reference, clock, comparator, SAR register, and output buffers on one chip, the system designer can focus on input conditioning, bus interfacing, timing, and reference-quality requirements. Its 10-bit resolution represents 1024 quantization levels, while the 20 µs typical conversion time provides a defined sampling interval for industrial control, instrumentation, and legacy microprocessor systems. Typical applications include industrial process measurement, laboratory instrumentation, digital panel meters, transducer signal acquisition, and embedded control systems with parallel buses. The input front end still requires careful attention to source impedance, acquisition time, input range, grounding, and noise. The positive and negative supply requirements must be checked against the system power architecture before layout begins, especially when replacing the converter with a different ADC family. A key design consideration is bus contention. The three-state outputs allow multiple devices or bus transceivers to share parallel data lines, but the system must ensure that only one output driver is enabled at a time. Input settling, conversion control, and the relationship between the internal clock and external bus timing should be verified against the manufacturer datasheet. This product page consolidates verified manufacturer and distributor information, package details, sourcing links, functional guidance, and explicitly separated uncertainties. It distinguishes documented AD573JP characteristics from parameters that require confirmation from the complete manufacturer datasheet before layout or production release.
AD573KD/+ - 10-Bit Single-Input SAR ADC | Analog Devices
Analog Devices AD573KD/+ is a 10-bit, single-input successive-approximation analog-to-digital converter housed in a 20-pin ceramic DIP package. The converter uses a parallel digital interface, operates from +5 V and either -12 V or -15 V supplies, and requires no external components to perform a conversion. An ADC is a data-conversion IC that converts a time-varying analog voltage into a numeric representation. The AD573 belongs to the SAR ADC hierarchy, where successive-approximation conversion compares the input against internally generated reference levels. It is used when a system needs compact, standalone conversion rather than the throughput and integration provided by a more complex high-speed converter. The principal verified specifications are 10-bit resolution, one analog input, SAR architecture, and a 20-CDIP package. Performance is guaranteed with +5 V and -12 V or -15 V supplies. The AD573KD/+ also appears as a 20-CDIP component with 2.54 mm leads, while the broader AD573 family is offered in multiple package configurations. Its digital outputs are suitable for parallel-processing systems, instrumentation, and industrial control equipment. The AD573 family is a complete converter according to the manufacturer product page, and no external components are required to perform a conversion. This simplifies analog front-end design when the available input range and acquisition rate meet the application requirements. The single-ended input arrangement also keeps the signal interface straightforward, although system-level grounding and signal conditioning remain essential for reliable measurements. Typical uses include process monitoring, industrial data acquisition, instrumentation, laboratory equipment, and embedded control systems. Designs must accommodate the converter's separate positive and negative supply requirements and interface its parallel outputs correctly to the host controller, counter, latch, or digital bus. When laying out the AD573KD/+, place the device close to the analog source and provide suitable bypass decoupling on the supply pins. The ceramic DIP package is suited to conventional through-hole assembly rather than high-density surface-mount designs. Confirm the complete pinout and timing behavior against the manufacturer datasheet before finalizing routing. This page consolidates verified manufacturer and distributor information for the AD573KD/+, adds application-focused design context, distinguishes confirmed specifications from unavailable details, and clearly records that no verified pin-to-pin substitute was found rather than presenting a merely similar converter as a drop-in replacement.
AD573SD - 10-Bit 20 us SAR ADC, 20-CDIP | Analog Devices
The Analog Devices AD573SD is a complete 10-bit successive-approximation analog-to-digital converter with a typical conversion time of 20 us, one analog input, and a 20-pin ceramic DIP package. It integrates a DAC, voltage reference, clock, comparator, successive-approximation register, and three-state output buffers. According to the manufacturer data, no external components are required to perform a full-accuracy 10-bit conversion. Performance is guaranteed with +5 V and -12 V or -15 V supplies. The AD573SD uses a 20-CDIP package, while the AD573 family also includes other package configurations, so package and temperature-grade details must be checked when comparing variants. An ADC converts an analog input voltage into a digital code for measurement, control, instrumentation, and industrial signal-processing systems. The AD573 belongs to the SAR ADC family: a successive-approximation register controls an internal DAC while a comparator tests successive bit decisions. SAR converters are useful when a compact, deterministic conversion process and direct digital output are preferred over continuous delta-sigma modulation. The integrated reference, clock, comparator, and output buffers reduce external circuitry and simplify system implementation. The main verified features include 10-bit resolution, no missing codes over temperature, full or 16-bit microprocessor bus-interface capability, fast successive-approximation conversion with 20 us typical timing, operation from +5 V and -15 V supplies, and monolithic construction. The integrated design can reduce board area and assembly complexity. The parallel three-state outputs are useful when the ADC must share a processor data bus or interface directly with digital control logic. The AD573SD is suitable for industrial process measurement, data acquisition, instrumentation, test equipment, and legacy control systems requiring a deterministic parallel ADC. A 20-CDIP package provides through-hole mechanical compatibility for systems designed around ceramic DIP footprints, but it is not interchangeable with a surface-mount package without a PCB change. Supply arrangement, signal conditioning, grounding, and digital-bus timing remain important design considerations. For a new design, use the AD573SD when its 10-bit SAR architecture, integrated functions, parallel interface, and 20-CDIP footprint are specifically required. For higher resolution, different supply architecture, or surface-mount assembly, select a newer ADC whose electrical and pin requirements have been verified. This product page synthesizes verified manufacturer and distributor information, application guidance, and compatibility cautions; missing electrical values are explicitly marked rather than estimated.
AD574AJDZ - 12-Bit SAR ADC, 28-CDIP | Analog Devices
The Analog Devices AD574AJDZ is a complete 12-bit successive-approximation-register (SAR) analog-to-digital converter integrating a buried Zener precision reference, an internal clock, and 3-state output buffers for direct 8/16-bit microprocessor bus interface, all in a hermetic 28-pin ceramic DIP (28-CDIP) package. The J-grade device operates over -55C to +125C, and the AJDZ suffix indicates the ceramic side-brazed DIP package, J-temperature grade, and the factory die revision marking scheme. An SAR analog-to-digital converter is a type of data converter that performs a binary search across an internal capacitive DAC to digitize an analog input in N clock cycles, where N equals the converter resolution. Compared with flash, sigma-delta, and dual-slope architectures, the SAR topology combines high throughput (tens to hundreds of ksps), low latency, no pipeline delay, and excellent DC linearity - making it the dominant architecture for 12-16 bit precision measurement, industrial data acquisition, and instrumentation applications. The AD574A family is widely regarded as the industry-standard 12-bit ADC and has been in continuous production since the early 1980s. Key features of the AD574AJDZ include 12-bit resolution with 35 us maximum conversion time, factory-calibrated linearity (no missing codes), four software-configurable input ranges (0 to +10 V, 0 to +20 V, -5 to +5 V, -10 to +10 V), and 8/16-bit microprocessor bus compatibility with standard read/write control logic. The on-chip reference and clock eliminate two of the largest external component costs typical of older 12-bit ADC designs. Architecturally, the AD574A combines a precision laser-trimmed thin-film DAC, a high-speed comparator, a successive-approximation register, and a 10 V buried Zener reference - all on a single bipolar/CMOS die. This integration produces full-rated performance without user calibration, a major advantage over the modular ADC boards of the era. The hermetic 28-CDIP package supports the J-grade (-55C to +125C) temperature range required for military and aerospace programs. Typical applications include precision industrial data acquisition systems, military/aerospace avionics signal conditioning, automated test equipment (ATE), process-control front ends, and high-reliability instrumentation requiring the extended-temperature ceramic package. The wide input range and 12-bit linearity suit multi-channel multiplexed front ends with PGA conditioning. When designing with the AD574AJDZ, allocate 200 ns bus-access timing margins and place a 100 nF bypass capacitor within 5 mm of each supply pin to suppress the high-current switching transients inherent to the SAR architecture. The ceramic DIP is intended for through-hole sockets on MIL-STD-810 and MIL-PRF-38534 compliant boards; for surface-mount designs, the AD574AUD (28-SOIC) is a recommended drop-in electrical equivalent.
AD574AJE - 12-Bit ADC, 28-Pin LCC | Analog Devices
The Analog Devices AD574AJE is a complete 12-bit successive-approximation analog-to-digital converter (SAR ADC) with integrated buried-Zener voltage reference, internal clock, and three-state output buffers, housed in a 28-terminal ceramic leadless chip carrier (LCC / QCCN / JLCC) package. The JEDEC JESD30 code QCCN denotes a square, no-lead chip-carrier package, and the JE suffix designates the commercial 0C to +70C temperature grade. An ADC (analog-to-digital converter) is a data converter that translates continuous analog signals into discrete digital codes. The AD574A family belongs to the successive-approximation register (SAR) architecture, which uses a comparator, an internal DAC, and a successive-approximation register to converge on the input voltage in N bit-clock cycles. SAR ADCs sit in the broader converter hierarchy: data converter -> ADC -> Nyquist ADC -> successive-approximation ADC -> integrated ADC with reference. They are valued for high accuracy, deterministic latency, and ease of microprocessor interfacing, making them a staple of industrial-instrumentation and process-control designs since the mid-1980s. Key features include guaranteed no-missing-codes operation over temperature, full 12-bit linearity maintained across the commercial range, and a maximum conversion time of 35 us using the on-chip clock. The integrated buried-Zener reference delivers long-term stability better than bandgap-only designs, eliminating the need for an external reference component. Three-state output buffers allow direct connection to 8- or 16-bit microprocessor data buses without additional glue logic, and standard +/-10 V or 0 V to +10 V / 0 V to +20 V analog input ranges are pin-selectable. The device implements a classic two-pass successive-approximation loop and an on-chip bipolar-offset DAC, enabling true bipolar input ranges from a single +5 V and +/-15 V analog supply. Its monolithic construction removes the calibration overhead typical of hybrid or modular ADC solutions, while the integrated clock and reference simplify PCB design and lower BOM count. Typical applications include process-control front ends, weigh-scale and load-cell digitizers, portable instrumentation, laboratory data loggers, and any 8- or 16-bit microprocessor-based measurement system requiring a complete, board-level 12-bit acquisition channel. Designers should choose the AD574AJE when a fully integrated, calibrated ADC with on-chip reference is preferred over a discrete ADC + external reference solution, and when the LCC footprint is acceptable for the assembly process.
AD574ASE/883B - 12-Bit SAR ADC, Military Grade | Analog Devices
The AD574ASE/883B is a complete 12-bit successive-approximation analog-to-digital converter (ADC) from Analog Devices, designed for high-reliability military and aerospace applications. It integrates a precision voltage reference, clock, and 3-state output buffers for direct interface to 8- or 16-bit microprocessor buses. The device operates over the full military temperature range of -55°C to +125°C and is available in a 28-lead ceramic LCC (11.43x11.43 mm) package, with screening to MIL-STD-883 Class B. An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values. The AD574A family is a classic example of a successive-approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their good balance of speed, resolution, and power consumption, making them suitable for a wide range of data acquisition systems. The AD574A is a complete converter, meaning it includes all necessary functions on-chip, such as the reference and clock, simplifying system design. Key features of the AD574ASE/883B include 12-bit resolution, a maximum conversion time of 35 microseconds, and guaranteed no missing codes over temperature. It supports both 8-bit and 16-bit microprocessor bus interfaces, allowing flexible integration with various digital systems. The device also offers a bipolar input range of -10V to +10V, making it suitable for industrial and instrumentation applications. The military-grade screening ensures reliable operation in harsh environments. Technically, the AD574A uses a laser-trimmed thin-film resistor network and an internal reference to achieve high accuracy. The device is designed to operate without external components for the reference and clock, reducing system complexity. The 3-state output buffers allow direct connection to a data bus, and the device can be configured for either 8-bit or 16-bit data transfer. The military version (883B) undergoes additional testing and screening to meet stringent reliability standards. Typical applications include military avionics, radar systems, industrial process control, and test and measurement equipment. The wide input range and high accuracy make it ideal for precision data acquisition in harsh environments. The device's robustness and long-term availability (often through authorized distributors like Rochester Electronics) make it a preferred choice for legacy system maintenance. When designing with the AD574ASE/883B, ensure proper decoupling on the power supply pins and a clean analog ground plane to minimize noise. The reference and clock are internal, but external bypass capacitors are recommended for optimal performance. Also, consider the conversion time of 35 µs when planning system throughput.
AD574ATE/883B - 12-Bit SAR ADC, Military Grade | Analog Devices
The AD574ATE/883B is a complete 12-bit successive-approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It integrates all analog and digital functions on a single chip using Analog Devices' Bipolar/I2L process, including a high-precision voltage reference and clock, ensuring full-rated performance without external circuitry. The device features a 3-state output buffer for direct interface to an 8- or 16-bit microprocessor bus, making it ideal for industrial and military data acquisition systems. Housed in a 28-lead ceramic leadless chip carrier (LCC) with dimensions 11.43x11.43 mm, it operates over the military temperature range and is processed to MIL-STD-883C Class B standards. An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital numbers. The AD574A is a successive-approximation ADC, which uses a binary search algorithm to determine the digital output, offering a good balance of speed and resolution. As a 12-bit ADC, it provides 4096 discrete levels, enabling high-resolution measurement of analog signals. This device belongs to the family of data acquisition components, which are essential in bridging the analog and digital domains in systems such as industrial process control, military avionics, and scientific instrumentation. Key features of the AD574ATE/883B include 12-bit resolution, a single input channel, and a successive-approximation register (SAR) architecture. It operates from a bipolar power supply, and its parallel word access allows for fast data transfer to microprocessors. The device is available in a 28-LCC package, which is suitable for surface-mount assembly and provides good thermal and electrical performance. The military-grade processing ensures reliability in harsh environments, with a temperature grade of MILITARY, indicating operation from -55°C to +125°C. Technically, the AD574A integrates a precision voltage reference and clock on-chip, eliminating the need for external components. The Bipolar/I2L process enables high-speed operation and low power consumption. The device includes a 3-state output buffer, allowing direct connection to a microprocessor bus without additional interface logic. The conversion time is typically 25 microseconds, providing a throughput of 40 kSPS. The device also features a status output to indicate when conversion is complete, simplifying system integration. Typical applications include military avionics, industrial process control, medical instrumentation, and scientific data acquisition systems. The AD574ATE/883B is particularly suited for applications requiring high accuracy and reliability in extreme environments, such as aerospace and defense systems. Its parallel interface simplifies connection to microcontrollers and DSPs, making it a versatile choice for embedded systems. When designing with this device, ensure proper decoupling of the power supply pins and a clean analog ground to achieve specified accuracy. The reference voltage is internally generated, but external filtering may be required for optimal performance. The device is not RoHS compliant due to its military-grade hermetic package, which is a consideration for applications with environmental compliance requirements.
AD5933YRSZ - 1MSPS 12-bit Impedance Converter, 16-SSOP
The Analog Devices AD5933YRSZ is a high-precision 1 MSPS, 12-bit impedance converter and network analyzer housed in a 16-pin SSOP (RS) package, combining an on-board programmable frequency generator, a 12-bit analog-to-digital converter (ADC), and a discrete Fourier transform (DFT) engine on a single chip. The excitation frequency can be set up to 16.776 MHz, allowing an external complex impedance to be stimulated with a known sine wave; the response is sampled and processed by an on-chip DFT to extract real and imaginary impedance components. Key headline parameters are: 1 MSPS ADC, 12-bit resolution, and a 16.776 MHz maximum MCLK. The device operates from 2.7 V to 5.5 V supply and supports I2C and SPI serial interfaces for register configuration. An impedance converter network analyzer is a mixed-signal subsystem that synthesizes a sine stimulus, applies it to an external unknown impedance (typically via a precision front-end op-amp and transimpedance gain resistor), and uses an ADC plus on-chip DFT to extract the impedance's real and imaginary components at each frequency. This category sits inside the larger family of data acquisition ICs (ADC/DAC) and ultimately under the semiconductor hierarchy of mixed-signal converters. Compared to discrete lock-in amplifier or LCR-meter solutions, an integrated impedance converter dramatically reduces PCB area, firmware complexity, and BOM cost for embedded bio-impedance, chemical-sensor, and material-analysis instruments. The AD5933 is the industry-standard example of this category. Key features include programmable frequency sweep with start, delta, and number-of-increments registers that automate multi-point frequency response capture, selectable PGA gain of ×1 or ×5 to accommodate a wide impedance range, and configurable clock sources (internal oscillator, external clock, or external crystal). Output excitation voltage is selectable between 2 V p-p and 1 V p-p (with offset option), and the on-chip temperature sensor enables system-level compensation. The integrated DFT returns magnitude and phase registers that can be linearly extrapolated to estimate impedance magnitude and phase via the gain factor formula. Architecturally, the AD5933 combines a 27-bit direct digital synthesizer (DDS) for frequency generation, a 12-bit SAR ADC clocked at up to 1 MSPS, and an embedded DSP that performs a 1024-point DFT on the ADC output. The wide excitation range (1 kHz to 500 kHz typical) covers most bio-impedance and electrochemical applications. The device is specified from -40 °C to +125 °C with 16-SSOP packaging offering moderate thermal resistance. Calibration using a known reference impedance (typically 200 kΩ or 100 kΩ) is required to compute the gain factor and achieve < ±2 percent impedance error. Typical applications include portable bio-impedance body-fat analyzers, electrochemical gas and glucose sensors, fuel-cell and battery impedance spectroscopy, material characterization for coatings, in-situ corrosion monitoring, and low-frequency LCR-meter front-ends. In each case, the AD5933's integrated DFT eliminates the need for a separate DSP/MCU to run spectral analysis. Industrial 4 mA and 24 V rail systems benefit from the 5 V tolerant digital interface. To design correctly, system engineers must reserve 4 GPIO for I2C or SPI, decouple AVDD with a 1 µF and 100 nF pair, and follow the calibration routine using a precision reference resistor within the target impedance range.
AD5934YRSZ - 250 kSPS 12-Bit Impedance Converter | Analog Devices
The Analog Devices AD5934YRSZ is a 250 kSPS, 12-bit impedance converter and network analyzer that combines an on-board frequency generator with a 12-bit, 250 kSPS analog-to-digital converter (ADC). Housed in a 16-pin SSOP package (YRS suffix), the device is specified for operation from a 3.3 V supply with an external MCLK up to 16.776 MHz, and it produces an excitation output up to 50 kHz for sweeping an unknown complex impedance. The integrated discrete Fourier transform (DFT) engine returns calibrated real and imaginary 16-bit words per frequency point, allowing a host microcontroller to compute magnitude and phase. An impedance analyzer is an instrument class that measures the complex impedance (resistance plus reactance) of a component, sensor, or biological sample across a range of AC frequencies. Within the broader instrumentation hierarchy, the AD5934 sits between a discrete lock-in amplifier and a full benchtop LCR meter: it removes the need for a separate function generator, digitizer, and FFT processor while still delivering calibrated magnitude/phase data over a user-selected frequency sweep. This integration is what makes it attractive for embedded electrochemical, bioimpedance, and material-sensing products. Key specifications include 12-bit ADC resolution at 250 kSPS, an excitation amplitude programmable in four steps from 0.2 V p-p to 2.0 V p-p, a programmable gain amplifier (PGA) with x1 or x5 settings, an I2C-compatible serial interface, and an operating temperature range of -40C to +125C. The on-chip temperature sensor (TA pin) and dedicated system clock input allow designers to add temperature compensation and reject mains-related clock jitter in the same BOM. Architecturally, the AD5934 separates the excitation DAC, the transimpedance front end (with external RFB), the sampling ADC, and the DSP DFT block, all clocked from a single MCLK reference. The result is a system whose accuracy is determined by the external calibration resistor (typically 200 kohm between RFB and VIN), the stability of the MCLK source, and the impedance range selected via the gain resistor - not by any factory trim step, which simplifies board bring-up. Typical applications include bioimpedance and skin-conductance analysis, electrochemical sensor interfaces, in-line material moisture meters, portable LCR-style probes, and multi-frequency material identification. Engineers choose the AD5934 when they need calibrated magnitude/phase data without the cost, size, or power budget of a bench instrument. When designing with the part, place the calibration resistor close to the RFB and VIN traces and drive MCLK from a low-jitter source; this is the single biggest determinant of sweep-to-sweep repeatability. This page synthesizes distributor pricing, qualified drop-in alternatives, and practical layout notes not collected in the standalone datasheet PDF.
AD5934YRSZ-REEL7 - 250kSPS 12-Bit Impedance Converter | ADI
The Analog Devices AD5934YRSZ-REEL7 is a high-precision 12-bit, 250 kSPS impedance converter and network analyzer system-on-chip that combines an on-board programmable frequency generator with a 12-bit analog-to-digital converter (ADC) and an on-chip DSP engine for discrete Fourier transform (DFT) processing, all integrated into a 16-pin SSOP package. The device excites an external complex impedance with a known frequency up to 50 kHz, samples the response signal, and returns calibrated real and imaginary impedance words via I²C/SPI serial interface, eliminating the need for external signal conditioning and reducing the BOM for portable bio-impedance and material analysis designs. An impedance converter network analyzer is a specialized data acquisition system that performs synchronous sine excitation, current-to-voltage conversion, and discrete Fourier transform (DFT) processing to extract magnitude and phase information from a connected unknown impedance. As a member of the impedance analyzer / LCR meter IC family, it sits at the intersection of the broader categories of direct digital synthesis (DDS), signal chain analog-to-digital converter (ADC), and embedded DSP, which together form a complete vector impedance measurement sub-system. The AD5934 in particular integrates DDS, transimpedance amplifier, ADC, and DFT engine into one IC. Key specifications include 12-bit ADC resolution, 250 kSPS sampling rate, programmable excitation output frequency up to 50 kHz, 16.776 MHz internal clock or external MCLK input, on-chip temperature sensor with ±2 °C precision, and serial interface compatibility with I²C or SPI protocols. The device supports a system clock from 0.1 MHz to 16.776 MHz and is supplied from a single 2.7 V to 5.5 V rail, equivalent to most 3 V or 5 V logic rails. The internal DDS allows 0.1 Hz frequency resolution when clocked from the on-chip oscillator. The excitation amplitude is programmable in four discrete steps between 0.2 Vpp and 1.98 Vpp to accommodate different impedance ranges. The AD5934 architecture combines a 28-bit direct digital synthesizer (DDS) core, a low-noise transimpedance front-end, a 12-bit successive-approximation ADC, and an embedded DFT processor that returns calibrated real (R) and imaginary (I) 16-bit words per frequency point. Gain factor calibration using a reference impedance removes system gain error across the 100 Ω to 10 MΩ measurement range, equivalent to a four-decade dynamic span, while the embedded temperature sensor compensates for system drift across the -40 °C to +125 °C automotive-grade operating range. The serial interface supports both standard I²C (100 kHz) and SPI (up to 5 MHz) for flexible host connectivity. Typical applications include portable bio-electrical impedance analysis (BIA) for body composition scales and fitness monitors, in-vitro electrochemical biosensors for glucose and pathogen detection, industrial material moisture and soil moisture analysis, fuel cell and battery impedance spectroscopy for state-of-charge estimation, and on-board diagnostic (OBD) systems for automotive sensor health monitoring. Compared to discrete lock-in amplifier solutions, the AD5934 reduces board area, BOM count, and firmware complexity by integrating the entire excitation-acquisition-DFT pipeline into one SSOP-16 package, while preserving calibration-grade accuracy through its gain factor compensation routine. When designing with the AD5934, place a precision 200 Ω or 100 kΩ reference resistor between the excitation output (IOUT) and the ADC input (VIN) for system calibration, and use the temperature sensor reading to correct for thermal drift of the reference resistor. The RFB pin selects the transimpedance gain; pair it with a low-temperature-coefficient external feedback resistor to extend the impedance measurement range beyond 1 MΩ. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design tips that complement the manufacturer datasheet with practical engineering guidance for impedance measurement system development.
AD637JRZ - 0.25% RMS-to-DC Converter, 200kHz | Analog Devices
The Analog Devices AD637JRZ is a high-accuracy, wideband true RMS-to-DC converter that computes the true root mean square value of any complex waveform, delivering 0.25% conversion accuracy with a 200 kHz measurement bandwidth in a 16-lead SOIC package. An RMS-to-DC converter is a specialized analog computing IC that produces a DC output proportional to the root-mean-square (RMS) value of its input signal, regardless of waveform shape. Within the signal chain hierarchy, it sits between the analog front end and the ADC or metering stage, enabling true-RMS measurement of AC signals where simple average-responding circuits fail, such as for noise, distorted, or pulsed waveforms. Key features of the AD637JRZ include true RMS, mean-square, and absolute-value computation modes, a wide supply range of plus/minus 3V to plus/minus 18V, and a supply current of only 2.2 mA with power dissipation of approximately 108 mW. The device offers accuracy comparable to discrete and modular techniques, which historically cost far more and occupied more board area. Technically, the AD637 uses an implicit analog computation architecture based on a translinear multiplier-divider cell and an active low-pass filter/averaging stage. The J-grade device specified here guarantees 0.25% of reading accuracy, while the same die family is offered in A, B, and K grades with tighter error limits. The wide 200 kHz bandwidth supports measurement of audio, mains-harmonic, and medium-frequency signals. Typical applications include true-RMS panel meters and DMM front ends, RF and audio power measurement, industrial process monitoring of distorted waveforms from variable-frequency drives, and noise measurement instrumentation. Its low supply current also suits portable test equipment. Design consideration: the averaging capacitor on the external filter pin sets ripple and settling trade-offs; larger capacitance reduces output ripple but extends settling time, so choose it based on the lowest measurement frequency. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
AD650SD/883B - V/F & F/V Converter 1MHz | Analog Devices
The AD650SD/883B is a monolithic voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter from Analog Devices, designed for high-accuracy analog-to-digital conversion and precision frequency measurement. It operates at a maximum frequency of 1 MHz with a nonlinearity of ±0.1% (typical), making it suitable for demanding industrial and aerospace applications. The device is housed in a 14-pin ceramic dual-in-line package (CDIP) and is specified for the full military temperature range of -55°C to +125°C, ensuring reliable operation in extreme environments. A voltage-to-frequency converter (VFC) is an electronic circuit that converts an analog input voltage into a proportional output frequency. This type of converter is widely used in analog-to-digital conversion, where the frequency output can be easily counted by digital logic, providing high resolution and noise immunity. The AD650SD/883B also operates in the reverse mode as a frequency-to-voltage converter, enabling closed-loop control and frequency measurement applications. As a member of the voltage-to-frequency converter family, it bridges the analog and digital domains, offering a simple and robust interface for data acquisition systems. Key features of the AD650SD/883B include a 1 MHz full-scale frequency, ±0.1% typical nonlinearity, and a wide supply voltage range of ±9V to ±18V. The device offers both single-ended and differential input configurations, and its output is a square wave that can drive TTL or CMOS logic directly. The ceramic package provides excellent thermal stability and hermetic sealing, making it ideal for military and aerospace applications where reliability is critical. Technically, the AD650SD/883B uses a charge-balancing architecture that ensures high linearity and temperature stability. The input current is integrated over a fixed time period, and the output frequency is proportional to the input voltage. This design minimizes drift and provides excellent long-term stability. The device also includes an internal reference and a precision comparator, reducing the need for external components. Typical applications include precision analog-to-digital conversion, frequency-to-voltage conversion for tachometers and flow meters, and isolated signal transmission in industrial control systems. The AD650SD/883B is also used in aerospace telemetry and test instrumentation where high accuracy and wide temperature range are required. When designing with the AD650SD/883B, ensure proper decoupling of the power supply pins with 0.1µF ceramic capacitors placed close to the device. The input signal should be filtered to remove high-frequency noise, and the output frequency should be buffered if driving long cables. The device's power dissipation is moderate, but thermal management is recommended for high-temperature environments.
AD6644 - 14-Bit 65 MSPS ADC | Analog Devices | Wideband
The AD6644 is a high speed, high performance, monolithic 14-bit analog-to-digital converter (ADC) from Analog Devices. It is designed for wideband, multichannel, multimode receivers and is part of the SoftCell transceiver chipset. The device operates at guaranteed sample rates of 65 MSPS (with a 40 MSPS version available) and provides CMOS-compatible digital outputs in twos complement format. It is packaged in a 52-lead Plastic Low Profile Quad Flat Pack (LQFP) and is specified for operation from -25°C to +85°C. An analog-to-digital converter (ADC) is a critical component in signal processing chains that converts continuous analog signals into discrete digital values for processing by digital systems. The AD6644 is a high-speed, high-resolution ADC, positioned in the hierarchy of data converters: ADC -> high-speed ADC -> wideband ADC -> IF-sampling ADC. It integrates a track-and-hold (T/H) circuit and reference, providing a complete conversion solution on-chip, which simplifies system design and reduces external component count. Key features of the AD6644 include a 65 MSPS guaranteed sample rate, 100 dB multitone SFDR, and low power dissipation of 1.3 W. It features differential analog inputs, which improve common-mode noise rejection, and digital outputs that are 3.3 V CMOS-compatible, ensuring easy interfacing with modern digital logic. The device uses a three-stage subrange architecture, achieving high accuracy and speed while maintaining low power and small die size. The AD6644 is built on Analog Devices' high speed complementary bipolar process (XFCB) and uses an innovative multipass circuit architecture. This design enables high dynamic performance, making it suitable for demanding applications such as digital receivers, cellular base stations, and test equipment. The device's wideband capability allows direct IF sampling, reducing the need for multiple downconversion stages. Typical applications include multichannel, multimode receivers, software-defined radios, cellular infrastructure, and radar systems. The AD6644's high SFDR and low noise make it ideal for these applications where signal fidelity is critical. Its differential inputs and CMOS outputs simplify integration with FPGAs and DSPs. When designing with the AD6644, careful attention to decoupling and grounding is essential to achieve optimal performance. The datasheet provides detailed recommendations for power supply decoupling and PCB layout to minimize noise and ensure accurate conversion.
AD664TD-UNI/883B - 12-Bit Quad DAC, Military | Analog Devices
The AD664TD-UNI/883B is a monolithic 12-bit quad digital-to-analog converter (DAC) from Analog Devices, designed for precision multi-channel voltage-output applications. It integrates four complete 12-bit DACs on a single chip, each with a double-buffered input latch structure and data readback function. The device operates from a single external reference and is available in a 28-pin side-brazed ceramic DIP (CDIP) package, screened to military standards (MIL-STD-883). It supports unipolar (UNI) output range with a gain of one or two times the reference voltage, and features a microprocessor-compatible parallel interface for all read and write operations. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD664 is a quad DAC, meaning it contains four independent DAC channels on one chip, enabling simultaneous multi-channel analog output from a single digital interface. This device belongs to the family of data converters, which are essential in mixed-signal systems where digital processing meets the analog world. The AD664's architecture uses the BiMOS II process, combining bipolar and CMOS transistors, along with laser-trimmed thin-film resistors and double-level metal interconnects to achieve high accuracy and stability. Key features of the AD664TD-UNI/883B include four complete voltage-output DACs, data register readback, reset-to-zero override, multiplying operation, and double-buffered latches. The device offers a settling time of 10 microseconds (as per Xecor comparison data) and operates over the full military temperature range of -55°C to +125°C. The package is a 28-pin side-brazed ceramic DIP, which is suitable for high-reliability applications. The device is RoHS non-compliant, reflecting its military-grade heritage. The AD664 uses a double-buffered input latch structure, allowing all four DACs to be updated simultaneously, which is critical for applications requiring synchronized analog outputs. The data readback function enables verification of written data, enhancing system diagnostics. The reset-to-zero override forces all outputs to zero, useful for system initialization. The multiplying operation allows the reference voltage to be varied, enabling programmable gain or attenuation. Typical applications include military avionics, industrial process control, automatic test equipment (ATE), and precision instrumentation where multiple analog outputs are needed. The military screening ensures reliability in harsh environments. The parallel interface simplifies connection to microprocessors and DSPs. When designing with this device, ensure adequate decoupling on the power supply and reference pins, and consider the settling time when updating multiple channels. The device is obsolete, so verify availability and consider alternatives for new designs.
AD667SD/883B - 12-Bit DAC, 28-CDIP | Analog Devices
The AD667SD/883B is a complete voltage output 12-bit digital-to-analog converter (DAC) from Analog Devices, featuring a high stability buried Zener voltage reference and a double-buffered input latch on a single chip. It is packaged in a 28-pin ceramic DIP (CDIP) and is designed for precision industrial and military applications. The device uses 12 precision high-speed bipolar current steering switches to achieve a settling time of 3 microseconds, ensuring fast and accurate analog output. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD667SD/883B is a voltage-output DAC, meaning it directly provides a voltage proportional to the digital input. It belongs to the family of data conversion ICs, which are essential in systems that interface digital processing with the analog world, such as microcontrollers, DSPs, and industrial control systems. The AD667 series is known for its high precision and stability, making it suitable for applications requiring accurate analog signals. Key features of the AD667SD/883B include 12-bit resolution, a single channel, and a settling time of 3 microseconds. The device operates from a +5V and -5V power supply, and it includes an internal buried Zener reference that provides excellent temperature stability. The double-buffered input latch allows for simultaneous updating of multiple DACs in a system, which is critical in multi-channel applications. The 28-pin CDIP package is hermetically sealed, offering enhanced reliability in harsh environments. Technically, the AD667SD/883B utilizes a current-steering architecture with a precision R-2R ladder network. The buried Zener reference ensures low noise and low drift over temperature, which is essential for high-accuracy applications. The device is designed to be microprocessor-compatible, with a parallel interface that can be easily connected to standard digital buses. The output voltage range is typically 0V to +10V or +/-5V, depending on the configuration, and it can drive loads up to 5mA. Typical applications include industrial process control, test and measurement equipment, and military/aerospace systems where high precision and reliability are paramount. The AD667SD/883B is also used in audio equipment for crystal-clear signal generation, as noted in comparison data. Its fast settling time and low glitch energy make it suitable for waveform generation and closed-loop control systems. When designing with the AD667SD/883B, it is important to provide adequate decoupling on the power supply pins and to ensure a clean analog ground plane. The reference output should be buffered if external loads are connected. Additionally, the digital inputs should be properly terminated to avoid noise-induced errors. The device is specified for operation over the full military temperature range of -55C to +125C, making it suitable for demanding environments.
AD6705 - 8-Bit Signal Conditioning ADC | Analog Devices
The AD6705 is an 8-bit, low-cost, signal conditioning analog-to-digital converter (ADC) from Analog Devices, designed for aerospace and industrial applications requiring precise analog-to-digital conversion with minimal external components. It integrates a complete signal conditioning front-end, including an instrumentation amplifier and a successive approximation register (SAR) ADC, enabling direct interface to sensors and transducers. The device operates from a single supply, simplifying power design and reducing system cost. An ADC (analog-to-digital converter) is a critical component in data acquisition systems that converts continuous analog signals into discrete digital values for processing by microcontrollers, DSPs, or FPGAs. The AD6705 belongs to the family of signal conditioning ADCs, which combine amplification, filtering, and conversion in a single package, reducing board space and improving noise immunity. This integration is essential in aerospace and industrial environments where signal integrity and reliability are paramount. Key features of the AD6705 include an 8-bit resolution, a single-supply operation, and a built-in signal conditioning front-end that accepts a wide range of input signals. The device offers a low-cost solution for applications that do not require high-resolution conversion but demand robustness and ease of use. Its aerospace-grade qualification ensures operation over extended temperature ranges and harsh conditions. Technically, the AD6705 employs a SAR architecture, which provides fast conversion times and low power consumption. The integrated instrumentation amplifier allows direct connection to bridge sensors, thermocouples, and other low-level signals, eliminating the need for external gain stages. The device also includes an internal reference, further reducing external component count. Typical applications include aerospace telemetry, industrial process control, and portable instrumentation. In aerospace, the AD6705 is used for monitoring pressure, temperature, and position sensors, where its reliability and signal conditioning capabilities are critical. In industrial settings, it interfaces with transducers in control loops, providing accurate digital data for process automation. When designing with the AD6705, ensure proper decoupling of the power supply and careful layout of the analog input traces to minimize noise. The device's single-supply operation simplifies power design, but attention to reference stability is necessary for accurate conversions.
AD670JN - 8-Bit Signal Conditioning ADC | Analog Devices
The Analog Devices AD670JN is an 8-bit signal-conditioning analog-to-digital converter with two inputs, a successive-approximation register, and a microprocessor bus interface. The converter is supplied in a 20-pin PDIP package and operates as a complete monolithic signal-conditioning ADC, integrating an instrumentation-amplifier front end, DAC, comparator, SAR, precision voltage reference, and three-state output buffer. According to the manufacturer datasheet, no external components or user trims are required to interface the device. The AD670 is positioned as a low-cost converter for acquiring bipolar or unipolar sensor signals with input conditioning included on the same chip. Its specified conversion speed is 10 microseconds, making it suitable for control, measurement, and instrumentation systems that require an 8-bit result but do not need the resolution or throughput of a modern high-resolution ADC. The 20-pin PDIP package is a through-hole format rather than a compact surface-mount option, which can simplify prototyping and replacement on older industrial and instrumentation boards. The AD670JN is listed as obsolete by ZDI, so procurement should account for limited original-equipment availability and possible premium pricing. Its 8-bit resolution gives 256 quantization levels, while the integrated instrumentation front end reduces the number of external analog components required around the converter. Engineers should verify supply voltage, input range, common-mode limits, reference behavior, interface timing, and acquisition sequencing against the manufacturer datasheet before adapting the device to a new design. Because the product is obsolete, any new production design should normally preserve the AD670JN footprint only when no functional and lifecycle-qualified alternative exists. An ADC is an analog-to-digital converter, a semiconductor in the data-converter category that translates a continuous voltage into a digital code. The AD670JN belongs to the successive-approximation-register ADC family and combines that conversion mechanism with analog signal conditioning and a parallel microprocessor interface. A SAR ADC determines its result by successively comparing the input against an internally generated DAC level. The AD670 extends this basic conversion function with an instrumentation-amplifier front end, internal precision reference, comparator, and tri-state output buffer. This integration places the device in the hierarchy of ADC, data-converter IC, signal-conditioning converter, and general-purpose semiconductor. The integrated front end is especially relevant where a sensor produces a small differential signal riding on a larger common-mode voltage, because external amplification and offset conditioning would otherwise increase component count, board area, and calibration complexity. The primary features identified in the verified manufacturer materials include complete 8-bit signal conditioning, a differential-input instrumentation-amplifier front end, a precision internal voltage reference, a microprocessor bus interface, and a conversion speed of 10 microseconds. The differential front end supports direct connection of suitable sensor outputs and rejects common-mode voltage to the extent permitted by the device's operating limits. The internal DAC, comparator, and SAR form the conversion core, while the three-state output buffer permits controlled connection to shared data buses. Because the converter includes the major analog blocks, it can reduce external passive-component and trimming requirements. Its 8-bit resolution divides the supported measurement span into 256 codes, making it appropriate for position, level, threshold, and proportional feedback systems where one least-significant bit is adequate. The AD670JN uses a successive-approximation conversion architecture rather than a flash, pipeline, or sigma-delta architecture. SAR conversion is well suited to this device's stated 10-microsecond speed because it combines moderate throughput with an integrated monolithic implementation. The instrumentation-amplifier front end converts the conditioned input into a form that the comparator can evaluate against the internal DAC. During conversion, the successive-approximation logic successively updates the DAC, compares its voltage with the conditioned input, and records each comparison as one bit of the 8-bit result. The internal precision reference establishes the comparison scale. A microprocessor can read the converted byte through the parallel bus when the converter indicates completion. Tri-state outputs reduce bus contention when multiple converter outputs share a bus, provided the interface is sequenced correctly. Typical uses include industrial process measurement, laboratory instrumentation, transducer signal acquisition, closed-loop position control, and legacy embedded control equipment. The integrated front end is useful when the source is differential and its amplitude is within the AD670's input and common-mode limits. The 10-microsecond conversion rate permits sampling of relatively slow variables such as temperature, pressure, position, and analog control feedback. Because the converter resolution is only 8 bits, it should not be selected for applications requiring precise waveform reconstruction, high dynamic range, or fine quantization. The PDIP-20 package also favors through-hole legacy equipment and industrial control cards rather than compact wearable or high-density embedded systems. The obsolete lifecycle status makes continuity of supply a central selection consideration. The primary design concern is analog input conditioning. Engineers should verify the supported bipolar or unipolar input range, input impedance, common-mode range, differential input limits, and required source impedance against the manufacturer datasheet before applying external sensors. Grounding and decoupling must preserve reference stability and minimize conversion error. The microprocessor interface timing and output enable behavior must also be observed because the tri-state bus is intended for controlled system-level access. Since exact pin assignments, supply limits, and timing values were not supplied in the verified web data, they must not be inferred from generic AD670-family descriptions. New designs should also account for obsolescence, counterfeit screening, and a possible PCB redesign if a currently supported converter offers better resolution, packaging, or lifecycle assurance. This page consolidates the verified distributor and manufacturer information for the AD670JN, including its obsolete status, 8-bit SAR architecture, 10-microsecond conversion speed, 20-pin PDIP package, pricing indication, and engineering-oriented replacement considerations. It also distinguishes verified facts from data requiring confirmation from the full manufacturer datasheet. That distinction is important for an obsolete converter, where package variants, temperature grades, screening levels, and supply conditions can materially affect drop-in qualification.
AD670JP - 8-Bit 2-Input SAR ADC | Analog Devices | PLCC-20
The Analog Devices AD670JP is an 8-bit, 2-input successive-approximation register analog-to-digital converter in a 20-pin PLCC package measuring 9 mm by 9 mm. It provides a parallel digital interface and supports bipolar or unipolar input configurations through an integrated signal-conditioning path. The AD670JP is designed for compact industrial measurement and control systems where an 8-bit conversion result is sufficient but the added flexibility of differential input and internal reference can simplify board design. An ADC is an integrated circuit that converts a continuously varying analog voltage into a numeric code. Within the semiconductor hierarchy, the AD670JP belongs to the data-converter IC class and more specifically to the ADC category. Its successive-approximation register architecture compares the unknown input against an internal DAC, one binary bit at a time, until the converted code is resolved. Parallel output presents the completed digital result directly on dedicated output pins rather than relying on a serial clock and data line. The AD670JP provides one converter with two input connections and 8-bit resolution. The 20-pin PLCC package supports surface-mount assembly, while the AD670 family also includes A-grade and B-grade versions specified from -40 °C to +85 °C and an S grade specified from -55 °C to +125 °C. Internal reference architecture, differential input, and selectable input polarity broaden its usefulness for transducer, control, and instrumentation applications. Because its resolution is 8 bits, the converter provides 256 discrete output codes. The AD670JP is therefore appropriate where precise proportional measurement, position sensing, process monitoring, or digital control is more important than fine quantization. Because parallel outputs require dedicated board routing and shielding from switching noise, the device is generally better suited to moderate-speed acquisition than to high-pin-count, very high-rate converter systems. Typical applications include industrial sensor interfaces, digital thermometry, analog control-loop monitoring, position and transducer measurement, panel meters, and low-cost embedded data-acquisition boards. A PLCC footprint also makes AD670JP relevant to legacy industrial equipment and maintenance inventories where changing the original converter would require redesigning the PCB rather than merely replacing the component. The main design consideration is that an 8-bit result limits system resolution to roughly 0.4% of full scale after accounting for endpoint behavior and practical signal conditioning. The board should provide clean analog routing, adequate bypassing, and input protection appropriate to the measured signal. Compatibility with a replacement part must be confirmed from the manufacturer datasheet rather than inferred from the converter resolution alone. This page consolidates the verified distributor listing, manufacturer family information, package details, temperature-grade options, and cross-reference evidence for AD670JP. It also identifies where public data is incomplete, including pricing, sampling rate, exact pin naming, and confirmed multi-part substitutes, so engineers can make sourcing decisions without treating unavailable specifications as established facts.
AD670KP - 8-Bit 10 us Dual-Input SAR ADC | Analog Devices
The Analog Devices AD670KP is a complete 8-bit signal-conditioning analog-to-digital converter with two analog inputs, a 10 microsecond conversion time, and parallel digital output in a 20-terminal PLCC package. It integrates an instrumentation-amplifier front end, DAC, comparator, successive-approximation register, precision voltage reference, and three-state output buffer on one monolithic bipolar chip. According to the manufacturer product page, the K grade is specified from 0°C to +70°C and is offered in a 20-terminal PLCC package. An ADC converts an analog voltage into a digital code for measurement, control, instrumentation, or data acquisition. The AD670KP belongs to the SAR ADC family: a successive-approximation register compares the input against an internally generated DAC level during successive clock cycles. SAR ADCs are useful where parallel outputs, modest resolution, moderate conversion speed, and integrated signal conditioning are more important than compact serial-interface power savings. The integrated instrumentation amplifier is particularly relevant for sensors and low-level differential signals. Verified source data identifies the AD670KP as an 8-bit parallel-output ADC with two analog input channels, a 0.195% linearity-error figure, and a 10 microsecond conversion time. The device needs no external components or user trims for full-accuracy operation according to the retrieved datasheet description. Its precision voltage reference supports a self-contained conversion chain, while the three-state output buffer can provide a controlled output state for shared digital buses. The monolithic bipolar implementation combines analog input conditioning and digital conversion logic in one package. This integration reduces the number of external precision components and simplifies board-level signal-chain design. A parallel 8-bit interface is appropriate for processors, programmable controllers, counters, data loggers, and embedded systems that can latch the converted code directly. Because only 8 bits are available, the converter is better suited to coarse measurements, position feedback, process monitoring, and control loops than to high-resolution signal analysis. Typical uses include industrial process measurement, sensor-interface systems, panel controls, instrumentation, and embedded data acquisition. The dual inputs allow the converter to monitor more than one analog quantity when system timing and multiplexing requirements permit. Designers should verify input range, acquisition timing, logic levels, reference behavior, and output timing against the current Analog Devices datasheet before fixing the PCB or firmware. A key integration advantage is that the instrumentation amplifier, DAC, comparator, SAR logic, voltage reference, and tri-state output buffer are combined on one chip. The trade-off is its 8-bit resolution: it provides economical acquisition but cannot distinguish finely spaced analog levels as effectively as a 12-bit or higher-resolution converter. This page synthesizes the verified AD670KP specifications, sourcing links, application guidance, and replacement limitations. It does not infer unverified electrical limits or invent drop-in substitutes where the available cross-reference data does not establish same-package, pin-compatible alternatives.
AD674BTE/883B - 12-Bit SAR ADC, 28-CDIP | Analog Devices
The AD674BTE/883B is a complete 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, featuring an internal high-precision voltage reference and clock. It is packaged in a 28-pin ceramic dual-in-line package (CDIP) and is designed for direct interface to 8- and 16-bit microprocessor buses via three-state output buffers. The device operates from ±12V and +5V supplies and converts in a maximum of 15 microseconds, making it suitable for high-speed data acquisition systems. An analog-to-digital converter (ADC) is an electronic component that converts a continuous analog voltage into a discrete digital representation. The AD674BTE/883B is a successive approximation register (SAR) ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed and moderate resolution, making them ideal for industrial control, instrumentation, and data acquisition. The AD674B family is pin-compatible with the industry-standard AD574A but offers faster conversion time and lower power consumption. Key features of the AD674BTE/883B include 12-bit resolution, a maximum conversion time of 15 µs, and an internal 10V reference. It accepts bipolar input ranges of ±5V and ±10V, as well as unipolar 0V to 10V and 0V to 20V, selectable via pin strapping. The device includes a three-state output buffer for direct bus interfacing and operates over the extended temperature range of -55°C to +125°C, meeting MIL-STD-883B standards. Technically, the AD674BTE/883B integrates a precision voltage reference, clock, and comparator on-chip, reducing external component count. The SAR architecture ensures monotonicity and no missing codes over the full temperature range. The device features a 12-bit parallel output with a status pin (STS) that indicates conversion completion, simplifying microprocessor handshaking. The 28-pin CDIP package provides excellent thermal and mechanical stability for harsh environments. Typical applications include military and aerospace data acquisition, industrial process control, medical instrumentation, and scientific analysis equipment. The device's wide operating temperature range and high reliability make it suitable for mission-critical systems where accuracy and durability are paramount. When designing with the AD674BTE/883B, ensure proper decoupling of the power supplies and a clean analog ground plane to minimize noise. The internal reference can be overridden by an external reference for improved accuracy, but the internal reference is sufficient for most applications. The conversion start (CE, CS, R/C) control pins allow flexible timing, and the STS pin can be used to trigger interrupts or polling routines.
AD676AD - 16-Bit 100 kSPS SAR ADC | Analog Devices
The Analog Devices AD676AD is a 16-bit, single-channel, parallel-output sampling analog-to-digital converter with a conversion rate of 100 kSPS, housed in a 28-CDIP package. It uses a switched-capacitor charge-redistribution architecture and an on-chip autocalibration function to support accurate signal acquisition. The verified product information identifies the AD676AD as a 28-pin SAR ADC with one analog input, 16-bit resolution, parallel output, and a 10 µs total conversion time. A sampling ADC samples an analog input through an internal sample-and-hold function and converts it into a digital value. The SAR, or successive-approximation-register, architecture is suited to instrumentation, measurement, and signal-processing systems requiring moderate conversion speed and high resolution. The AD676AD belongs to the broader ADC, data-conversion, and analog-signal-processing hierarchy, and its parallel interface can simplify connections to suitable digital acquisition logic. Key verified features include 16-bit resolution, 100 kSPS conversion performance, autocalibrating on-chip sample-and-hold, and a parallel output format. The device is also described as having no missing codes, 1 LSB integral nonlinearity, 97 dB THD, 90 dB signal-to-noise-plus-distortion ratio, and 1 MHz full-power bandwidth according to the supplied ADI-related technical listing. These figures describe the converter's intended acquisition performance, but system-level results also depend on reference quality, analog conditioning, clocking, layout, and digital post-processing. The AD676 uses a switched-capacitor/charge-redistribution architecture and digitally corrects internal nonlinearities through on-chip autocalibration. Autocalibration supports consistent conversion behavior in measurement applications, while the parallel output format allows the converted word to be captured by compatible logic. The supplied manufacturer documentation emphasizes both dynamic specifications, such as THD and S/(N+D), and DC parameters relevant to precision measurement. Typical applications include industrial process measurement, instrumentation, laboratory data acquisition, sensor-interface systems, and embedded measurement platforms. The 100 kSPS rate is suitable for sampling many control, monitoring, and waveform-related signals while the 16-bit word provides high nominal resolution. The 28-CDIP package is through-hole and requires careful board-level pin mapping and signal-integrity planning. When designing around the AD676AD, preserve the required reference, analog input, digital interface, and power connections specified by the manufacturer datasheet. Validate the complete signal chain with the intended source impedance, sampling interval, and calibration sequence. Because the verified results do not provide a complete pinout or operating-temperature table in the supplied material, those details must be confirmed from the official AD676 datasheet before layout or production release.
AD676BD - 16-Bit 100 kSPS Sampling ADC | Analog Devices
The Analog Devices AD676BD is a 16-bit, 100 kSPS single-input sampling analog-to-digital converter with parallel output in a 28-pin CDIP package. It uses switched-capacitor charge redistribution, completes conversion in 10 microseconds, and includes an on-chip autocalibration function and sample-and-hold circuit. A sampling ADC samples an analog input and converts it into a digital code for measurement, instrumentation, signal processing, and control systems. The AD676 belongs to the SAR ADC family, where successive approximation compares the sampled voltage against an internal DAC. Its parallel output presents all 16 result bits together rather than serializing them through a shift register, which supports simpler data capture at moderate clock rates. The verified device data identifies 16-bit resolution, 100 kSPS conversion throughput, one SAR input, no missing codes, 1 LSB integral nonlinearity, 97 dB THD, 90 dB signal-to-noise-plus-distortion ratio, and 1 MHz full-power bandwidth. On-chip autocalibration digitally corrects internal nonlinearities. The parallel interface provides 16-bit output data, while the integrated sample-and-hold function reduces the external sampling circuitry required. The AD676 datasheet also identifies dynamic and direct-current specifications. Dynamic parameters such as S/(N+D), THD, and IMD characterize signal-chain behavior, while DC parameters support precision measurement. The 28-CDIP mechanical format through-hole package is larger than modern leadless options but remains useful where through-hole construction, serviceability, and legacy instrument compatibility are priorities. Typical uses include industrial measurement, process monitoring, audio and signal processing, data acquisition, and precision instrumentation. Design implementation must observe the manufacturer's analog, digital, reference, and power-supply requirements. Because acquisition accuracy depends on the complete signal chain, reference stability, source impedance, grounding, clock quality, and input bandwidth are as important as nominal converter resolution. This page combines exact verified specifications, official documentation links, commercial availability references, and application guidance. It does not invent unreported electrical, environmental, pricing, pinout, or compliance values; unavailable engineering data remains explicitly identified in the specifications.
AD676JD - 16-Bit 100 kSPS Parallel ADC | Analog Devices
The Analog Devices AD676JD is a 16-bit parallel-output sampling analog-to-digital converter packaged in a 28-pin CDIP. It uses switched-capacitor, charge-redistribution conversion to provide a 100 kSPS conversion rate with a 10 microsecond total conversion time. The AD676 is designed for precision signal acquisition where parallel data output, 16-bit resolution, and relatively high sampling speed are required. Its on-chip autocalibration uses digital correction to optimize performance by compensating internal nonlinearities. The AD676JD is the commercial-grade 28-pin plastic DIP ordering option associated with the AD676 family, while the AD676 family also includes a 28-pin side-brazed ceramic package and a separate serial-output AD677 family. The verified manufacturer material identifies the converter as multipurpose and highlights its 100 kSPS rate, 10 microsecond conversion time, 16-bit parallel output, single analog input, and switched-capacitor architecture. These characteristics make the AD676JD relevant to industrial instrumentation, process-control acquisition, laboratory measurement, communications, and embedded signal-processing systems where a parallel ADC interface can simplify connection to a digital bus or FPGA. The AD676JD is not a modern serial-interface ADC, so system designers should confirm logic levels, timing, bus width, acquisition sequencing, reference requirements, and input conditioning against the manufacturer datasheet before layout release. This page combines the verified ADI product description, available distributor and cross-reference information, and practical engineering guidance for evaluating AD676JD in a new design.
AD676JN - 16-Bit 100kSPS Parallel SAR ADC | Analog Devices
The Analog Devices AD676JN is a 16-bit, 100 kSPS parallel-output successive-approximation (SAR) analog-to-digital converter housed in a 28-pin plastic DIP (PDIP-28) package. It combines a switched-capacitor/charge-redistribution core with on-chip autocalibration, delivering 10 microsecond total conversion time, ±1 LSB INL maximum (no missing codes), 97 dB THD, and 90 dB signal-to-noise ratio. The integrated sample-and-hold amplifier accepts full-scale unipolar or bipolar input ranges from the on-chip reference or an external reference source. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes at a defined sample rate. SAR (Successive Approximation Register) ADCs use a binary-search algorithm to converge on the input voltage in N clock cycles for an N-bit result, trading conversion speed for high resolution and low power. Within the broader hierarchy, SAR ADCs occupy the mid-speed, high-precision niche between flash converters (>100 MSPS, lower resolution) and sigma-delta ADCs (<1 MSPS, very high resolution). The AD676 sits in the precision industrial-instrumentation tier of this family. Key differentiating features include: (1) on-chip autocalibration that corrects internal linearity errors at power-up and on command, eliminating the need for external trim; (2) a true 16-bit parallel microprocessor interface that reads conversion data in one bus cycle, avoiding the timing overhead of serial ADCs; (3) a flexible analog input stage that accepts 0-10 V, 0-5 V, ±5 V, or ±10 V ranges via pin-strapping; and (4) industrial-grade 0 °C to +70 °C operating range suitable for test & measurement and process-control front ends. Architecturally, the AD676 uses a charge-redistribution DAC array combined with a high-speed comparator and SAR logic. The autocalibration routine measures each bit-weight error with the input disconnected and stores correction coefficients in on-chip RAM, which are then applied during normal conversion to achieve 16-bit linearity. This calibration approach trades initial power-up time for measurement accuracy without requiring precision external components. Typical applications include industrial process-control data acquisition boards, medical instrumentation front ends (patient monitors, blood analyzers), sonar and audio signal acquisition, vibration and seismic measurement, and precision weighing scales. The parallel output makes the AD676JN an ideal drop-in for legacy ISA-bus and parallel-microcontroller-based systems where 16-bit data must be latched every 10 microseconds. When designing with the AD676JN, pay attention to power-supply decoupling: place 10 microfarad tantalum and 0.1 microfarad ceramic capacitors within 5 mm of the +VCC and -VCC pins. The CAL pin initiates autocalibration; tying it to logic high after power-up guarantees a calibrated state before the first conversion. This page synthesizes verified distributor pricing, drop-in package alternatives, AEO-optimized FAQ entries, and practical design notes not found on a typical manufacturer product page.