ADC/DAC
Products (2368)
AD5214TD/883B - 12-Bit SAR ADC, Military Grade | Analog Devices
The AD5214TD/883B is a 12-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, designed for high-reliability military and aerospace applications. It features a conversion time of 13 microseconds and operates over the full military temperature range of -55°C to +125°C. The device is packaged in a 24-pin ceramic dual-in-line package (CDIP) with through-hole mounting, ensuring robust mechanical and thermal performance in harsh environments. With a maximum supply current of 68 mA, it balances speed and power efficiency for precision data acquisition systems. An analog-to-digital converter (ADC) is a critical component in electronic systems that converts continuous analog signals into discrete digital values for processing by microcontrollers, DSPs, or FPGAs. The successive approximation register (SAR) architecture used in the AD5214TD/883B is favored for its high speed and low power consumption compared to other ADC types like delta-sigma or pipeline converters. SAR ADCs are widely used in industrial control, medical instrumentation, and military avionics where accurate and fast conversion is essential. Key features of the AD5214TD/883B include 12-bit resolution with 0.0122% integral linearity error (EL), ensuring high accuracy for precision measurements. The device supports both serial and parallel output interfaces, providing flexibility in system design. The hybrid technology construction and military temperature grade make it suitable for mission-critical applications where reliability is paramount. The CDIP24 package offers excellent thermal dissipation and protection against environmental stress. Technically, the AD5214TD/883B employs a charge redistribution SAR architecture with an internal track-and-hold circuit, enabling accurate sampling of input signals up to the Nyquist frequency. The conversion process is initiated by a start command, and the 12-bit result is available on parallel output lines or shifted out serially. The device operates from a single +5V supply, simplifying power design. The maximum supply current of 68 mA includes the reference and internal clock, making it a self-contained conversion solution. Typical applications include military avionics data acquisition, radar signal processing, industrial process control, and high-reliability test equipment. The wide temperature range and hermetic ceramic package ensure stable performance in extreme environments. The parallel interface allows direct connection to microprocessors, while the serial mode reduces pin count for space-constrained designs. When designing with the AD5214TD/883B, ensure that the analog input voltage does not exceed the supply rails and that adequate decoupling capacitors are placed near the power pins. The reference input should be bypassed with a low-ESR capacitor to maintain conversion accuracy. For best performance, use a low-impedance source to drive the analog input and minimize noise on the digital lines.
AD5272BRMZ-50-RL7 - 50kΩ 1024-Tap I2C Digital Rheostat | ADI
The Analog Devices AD5272BRMZ-50-RL7 is a single-channel, 1024-position digital rheostat with 50 kΩ end-to-end resistance, nonvolatile memory (NVM), and an I2C-compatible digital interface, supplied in a 10-lead MSOP package on tape and reel. According to the ADI datasheet, the device guarantees less than 1% end-to-end resistor tolerance error and offers a one-time programmable (50-TP) fuse that permanently freezes the wiper position, emulating a mechanical trimmer sealed with epoxy. A digital potentiometer (also called a digital rheostat or digipot) is a solid-state variable resistor whose wiper position is set through a digital command rather than a mechanical knob. It belongs to the broader category of data converters and digital signal conditioning ICs, sitting alongside ADCs and DACs in the signal-chain hierarchy of integrated circuits. The AD5272 combines a precision resistor array, a wiper switch network, and 50-TP nonvolatile memory in one die, allowing the wiper setting to survive power cycles without an external EEPROM. Key features include 1024 tap points (10-bit resolution), 50 kΩ nominal end-to-end resistance, an I2C serial interface that supports up to 400 kHz Fast Mode, a single supply range of 2.7 V to 5.5 V (or ±2.5 V dual supply), and an extended industrial operating temperature range of -40°C to +125°C. The 50-TP fuse command provides a hardware lock against software tampering once the calibration value is finalized, which is critical in safety-relevant and security-conscious designs. The internal architecture uses a thin-film resistor ladder with CMOS wiper switches, achieving low wiper resistance (typically 35 Ω to 70 Ω) and excellent temperature coefficient performance. The on-chip nonvolatile memory stores both the wiper position and the 50-TP lock bit, and the part is guaranteed for 50 TP write cycles and 50,000 wiper re-write cycles. The MSOP-10 footprint measures 3.0 mm × 3.0 mm, occupying roughly one-third of a SOIC-8 footprint while exposing all digital and analog terminals. Typical applications include precision gain adjustment in instrumentation amplifiers, LCD display contrast and backlight brightness control, laser diode bias calibration, mechanical trimmer replacement in new designs, programmable voltage references, and audio attenuators. The 50-TP lock makes it especially attractive for factory-calibrated end equipment where field re-calibration is undesirable. Designers should size the wiper current within the absolute maximum rating (typically a few mA) and add a small series resistor if the load injects transients into the wiper node. When used as a true rheostat (two-terminal variable resistor), tie the W and A or W and B terminals together; when used as a potentiometer (three-terminal voltage divider), use all three terminals for best linearity. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated on a single manufacturer or distributor page.
AD5372BSTZ - 32-Channel 16-Bit Serial DAC | Analog Devices
The AD5372BSTZ is a 32-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 64-lead LQFP package. It provides buffered voltage outputs with a nominal span of 4× the reference voltage, making it ideal for precision multi-channel control systems. The device features a serial interface, independent gain and offset trim for each DAC, and operates over a wide temperature range. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD5372BSTZ belongs to the family of voltage-output DACs, which are essential in applications requiring precise analog control from digital systems, such as industrial automation, instrumentation, and communication systems. As a multi-channel DAC, it integrates 32 individual converters in a single package, reducing board space and simplifying system design. Key features of the AD5372BSTZ include 16-bit resolution, 32 independent DAC channels, and a serial interface compatible with SPI/QSPI/MICROWIRE. Each DAC has a buffered output capable of driving loads directly, and the gain and offset of each channel can be independently trimmed to remove system errors. The device operates from a single 2.5V to 5.5V supply, with a reference voltage range of 2V to 5V, and provides a nominal output span of 4× VREF. The AD5372BSTZ uses a resistor-string architecture with an output buffer for each channel, ensuring monotonicity and low glitch energy. The serial interface supports daisy-chaining, allowing multiple devices to be controlled with a single data line. The device includes a power-on reset that clears all DAC registers to zero-scale, and a CLR pin that resets outputs to zero-scale or midscale. The LQFP package provides good thermal performance and is suitable for surface-mount assembly. Typical applications include automatic test equipment (ATE), optical network control, instrumentation, and industrial process control. The 32 channels and 16-bit resolution make it suitable for systems requiring many precise analog outputs, such as multi-axis positioning, programmable voltage sources, and calibration equipment. When designing with the AD5372BSTZ, ensure adequate decoupling on the AVDD and DVDD supplies, and place the reference decoupling capacitor close to the REFIN pin. The serial clock frequency should be limited to 50 MHz to ensure reliable communication, and the SYNC pin must be held low during data transfer.
AD5381BSTZ-3 - 40-Channel 12-Bit DAC | Analog Devices
The AD5381BSTZ-3 is a complete, single-supply, 40-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices, packaged in a 100-lead LQFP (14x14 mm). It operates from a 3 V single supply and includes an on-chip output amplifier with rail-to-rail operation on all 40 channels. The device features a programmable internal reference (1.25 V default, 2.5 V optional via control register), an on-chip channel monitor that multiplexes outputs to a common MON_OUT pin, and a flexible serial interface (DSP-/SPI-/MICROWIRE-compatible) or parallel interface. The AD5381BSTZ-3 is specified for the industrial temperature range (-40°C to +85°C) and is RoHS compliant. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. In the hierarchy of signal processing, a DAC is a key element in the data converter family, which also includes analog-to-digital converters (ADCs). DACs are essential in systems where digital processing must interface with the analog world, such as in audio playback, motor control, and instrumentation. The AD5381 is a dense DAC, integrating 40 channels in a single package, which reduces board space and simplifies multi-channel systems. Key features of the AD5381BSTZ-3 include 12-bit resolution, 40 independent output channels, a settling time of 8 µs, and a programmable internal reference with 10 ppm/°C drift. The device also offers a power-on reset to zero-scale or midscale, and a clear function to reset outputs. The rail-to-rail output amplifiers allow the outputs to swing close to the supply rails, maximizing dynamic range. The channel monitor function simplifies system diagnostics by allowing external monitoring of any channel. Technically, the AD5381 uses a resistor-string architecture with an output buffer for each channel, ensuring monotonicity and low glitch. The device supports both serial and parallel interfaces, with the SER/PAR pin selecting the mode. In serial mode, the SPI/I2C pin (Pin 97) must be tied low for SPI-compatible operation. The internal reference can be programmed to 1.25 V or 2.5 V via the control register, but operating with 2.5 V reference degrades accuracy and limits input code range, as noted in the datasheet. Typical applications include industrial process control, automated test equipment, multi-channel data acquisition systems, and precision instrumentation. The 40-channel density and 3 V operation make it ideal for systems requiring many analog outputs with minimal power consumption. The device's rail-to-rail outputs and programmable reference enhance flexibility in various voltage domains. When designing with the AD5381BSTZ-3, ensure adequate decoupling on the AVDD and DVDD supplies, and consider the reference voltage selection carefully to meet accuracy requirements. The channel monitor function can be used for system-level calibration and fault detection.
AD5381BSTZ-5 - 40-Channel 12-Bit DAC | Analog Devices
The AD5381BSTZ-5 is a complete, single-supply, 40-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices, housed in a 100-lead LQFP package. It operates from a single 5V supply and includes an on-chip output amplifier with rail-to-rail operation on all 40 channels. The device features a programmable internal 1.25V/2.5V reference with 10 ppm/°C drift, an on-chip channel monitor function that multiplexes analog outputs to a common MON_OUT pin, and a power-down mode. It supports both serial (SPI, DSP, MICROWIRE) and parallel interfaces, with the SER/PAR pin selecting the mode. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD5381BSTZ-5 is a multi-channel DAC, specifically a denseDAC, designed for systems requiring many precise analog outputs from a single IC. It belongs to the data acquisition product family, which includes ADCs, DACs, and analog front ends, and is essential in industrial control, automated test equipment, and instrumentation where multiple analog voltages must be generated accurately. Key features include guaranteed monotonic INL error of ±1 LSB max, a 10 ppm/°C on-chip reference, rail-to-rail output amplifiers, and a power-down mode. The device operates over the industrial temperature range of -40°C to +85°C. The 100-lead LQFP package (14x14 mm) provides a compact footprint for high-channel-count designs. The AD5381BSTZ-5 is the 5V supply version; a 3V version (AD5381BSTZ-3) is also available. Technically, the AD5381 uses a segmented architecture with an internal reference and output amplifiers, ensuring monotonicity and low INL. The channel monitor function allows external monitoring of any channel without disturbing the output, which is valuable for system diagnostics. The serial interface supports daisy-chaining for multiple devices, and the parallel interface allows high-speed updates. The power-down mode reduces current consumption to a low level, beneficial for power-sensitive applications. Typical applications include industrial process control, automated test equipment (ATE), instrumentation, and multi-channel voltage biasing in optical modules. The 40-channel density and 12-bit resolution make it ideal for systems requiring many accurate analog outputs, such as setting bias voltages in MEMS or optical devices. The rail-to-rail output and single-supply operation simplify power supply design. When designing with the AD5381BSTZ-5, ensure proper decoupling of the AVDD and DVDD supplies with 0.1µF and 10µF capacitors close to the pins. The reference output should be buffered if driving external loads. For serial mode, tie SER/PAR high and SPI/I2C low. Verify the interface timing against the datasheet to avoid data corruption.
AD5381BSTZ-5KL2 - 40-Channel 12-Bit DAC | Analog Devices
The AD5381BSTZ-5KL2 is a complete, single-supply, 40-channel, 12-bit digital-to-analog converter (DAC) from Analog Devices, packaged in a 100-lead LQFP. It operates from a 5 V supply and includes an on-chip output amplifier with rail-to-rail operation on all 40 channels. The device features a programmable internal 1.25 V/2.5 V reference with 10 ppm/°C drift, an on-chip channel monitor that multiplexes outputs to a common MON_OUT pin, and a flexible digital interface supporting both parallel and serial (SPI/DSP/MICROWIRE) modes. The AD5381 is designed for precision multichannel applications such as industrial process control, automatic test equipment, and medical instrumentation. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD5381 is a denseDAC, integrating 40 DAC channels in a single package, which reduces board space and system cost compared to using multiple lower-channel-count DACs. It belongs to the family of data converters, which are essential in bridging the digital and analog domains in mixed-signal systems. The AD5381's high channel density and integrated reference make it a key component in multichannel control and calibration systems. Key features of the AD5381BSTZ-5KL2 include 12-bit resolution, 40 independent output channels, rail-to-rail output amplifiers, and a programmable reference. The device offers a settling time of 8 µs typical, ensuring fast response in dynamic applications. It also includes a power-on reset to zero-scale, ensuring safe startup conditions. The channel monitor function allows external monitoring of any channel without disturbing the output, which is valuable for system diagnostics. Technically, the AD5381 uses a segmented architecture with an internal precision reference, achieving excellent linearity and low noise. The device operates over a temperature range of -40°C to +105°C, making it suitable for industrial environments. The LQFP-100 package provides a compact footprint while allowing adequate thermal dissipation. The digital interface supports both parallel and serial modes, with the SER/PAR pin selecting the mode, and the SPI/I2C pin (Pin 97) enabling the serial interface when tied low. Typical applications include industrial process control (e.g., valve and actuator control), automatic test equipment (ATE) for precise voltage generation, and medical instrumentation such as patient monitoring systems. The AD5381's 40 channels allow it to drive multiple analog outputs simultaneously, reducing component count and improving system reliability. When designing with the AD5381, ensure proper decoupling of the AVDD and DVDD supplies with 10 µF and 0.1 µF capacitors placed close to the pins. The reference output should be buffered if external loads are connected. The MON_OUT pin can be used to monitor channel outputs, but care must be taken to avoid loading the monitored channel.
AD5412ACPZ - 12-Bit Current/Voltage Output DAC | Analog Devices
The AD5412ACPZ is a low-cost, precision, fully integrated 12-bit digital-to-analog converter (DAC) from Analog Devices that offers a programmable current source and programmable voltage output, designed to meet the requirements of industrial process control applications. It operates from a single 10.8V to 40V supply and provides a current output range of 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA, and a voltage output range of 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V. The device is available in a 40-lead LFCSP-VQ (6x6 mm) package, designated by the 'CP' suffix, and is specified for operation over the extended industrial temperature range of -40°C to +85°C. A digital-to-analog converter (DAC) is a device that converts digital binary data into an analog voltage or current signal. The AD5412 is a precision DAC with an integrated output amplifier and reference buffer, enabling direct interface to actuators, transmitters, and other industrial control elements. It belongs to the family of smart DACs that combine digital-to-analog conversion with programmable output ranges and diagnostic features, making it a key component in programmable logic controllers (PLCs), distributed control systems (DCS), and field transmitters. Key features of the AD5412ACPZ include a 12-bit resolution with monotonicity guaranteed, a flexible serial interface compatible with SPI, QSPI, and MICROWIRE protocols, and an on-chip precision reference (2.5V) with a temperature coefficient of 10 ppm/°C. The device also includes a HART (Highway Addressable Remote Transducer) compliant interface, allowing it to be used in smart transmitters that require superimposed digital communication on the analog current loop. The output is protected against short circuits and can drive capacitive loads up to 1 µF. Technically, the AD5412 uses a segmented architecture with a precision current-steering DAC core, followed by a programmable gain amplifier and output driver. The device includes a power-on reset circuit that ensures the output is at zero-scale or mid-scale on power-up, and a clear pin that resets the output to a defined state. The digital interface supports daisy-chaining for multiple devices on a single serial bus, and the device can be configured for either current or voltage output mode via the control register. Typical applications include industrial process control, PLC analog output modules, HART transmitters, and actuator control. The AD5412's ability to provide both current and voltage outputs with high accuracy and low drift makes it ideal for driving valves, positioners, and other field devices. Its HART compatibility enables seamless integration into existing 4-20 mA loop infrastructure. When designing with the AD5412ACPZ, ensure that the supply voltage is adequately decoupled with a 10 µF tantalum capacitor and a 0.1 µF ceramic capacitor placed close to the AVDD and DVDD pins. The reference output should be buffered if external loads are connected, and the output amplifier's stability should be verified with the expected capacitive load. For best performance, use a clean analog ground plane and separate digital and analog supply traces.
AD5412ACPZ-REEL7 - 12-Bit DAC with Current/Voltage Output | ADI
The AD5412ACPZ-REEL7 is a low-cost, precision, fully integrated 12-bit digital-to-analog converter (DAC) from Analog Devices, offering a programmable current source and programmable voltage output. It is designed to meet the requirements of industrial process control applications, providing a single-channel output with serial input interface. The device operates from a 40-lead LFCSP-VQ (6x6 mm) package, ensuring compactness for space-constrained designs. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current signal. The AD5412 belongs to the family of precision DACs used in industrial automation, where accurate analog output is essential for controlling actuators, valves, and transmitters. It integrates a current source and voltage output capability, making it versatile for various control loops. Key features include 12-bit resolution, a programmable current output range (typically 4-20 mA) and voltage output range (0-5 V, 0-10 V, ±5 V, ±10 V), and a serial interface compatible with SPI. The device also includes a power-on reset, ensuring the output is at a known state on power-up. Its low power consumption and wide operating temperature range (-40°C to +125°C) make it suitable for harsh industrial environments. Technically, the AD5412 uses a resistor-string architecture with an output amplifier, providing monotonic performance and low glitch energy. It includes a precision internal reference (optional external reference) and a flexible digital interface that supports daisy-chaining. The device is fully specified over the industrial temperature range, ensuring reliable operation in demanding applications. Typical applications include industrial process control, programmable logic controllers (PLCs), actuator control, and transmitter calibration. The AD5412's ability to provide both current and voltage outputs makes it ideal for interfacing with various sensors and actuators in factory automation. When designing with the AD5412, ensure proper decoupling of the power supply and reference pins. The output amplifier requires a stable supply; consider using a low-noise LDO for analog rails. Also, the thermal pad should be soldered to a large copper area for effective heat dissipation.
AD5422ACPZ - 16-Bit Current/Voltage Output DAC | Analog Devices
The AD5422ACPZ is a single-channel, 16-bit digital-to-analog converter (DAC) from Analog Devices, designed for industrial process control applications. It provides a programmable current source and programmable voltage output, with HART connectivity capability. The device operates from a single 10.8V to 40V supply and is available in a 40-lead LFCSP-VQ (6x6 mm) package. It features a serial interface compatible with SPI, QSPI, and MICROWIRE protocols, and includes an on-chip reference and output amplifier. A DAC (digital-to-analog converter) is an electronic component that converts digital binary data into an analog voltage or current. The AD5422 is a precision DAC that integrates a current source and voltage output, making it a complete analog output stage for industrial control systems. It belongs to the family of smart DACs that combine digital-to-analog conversion with additional features like fault detection and HART communication. Key features include 16-bit resolution, a current output range of 4 mA to 20 mA (with additional ranges), a voltage output range of 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V, and a settling time of 10 µs. The device offers a total unadjusted error (TUE) of ±0.1% FSR, and includes a precision 5 ppm/°C internal reference. It also features a flexible serial interface, a power-on reset to zero-scale, and a fault alarm output. The AD5422 uses a segmented architecture with a precision resistor ladder and a high-speed output amplifier. It includes a programmable gain and offset, and supports HART signal modulation for smart transmitter applications. The device operates over a temperature range of -40°C to +85°C and is available in a lead-free, RoHS-compliant package. Typical applications include process control, PLC analog output modules, industrial automation, and HART network transmitters. The AD5422's high accuracy and flexibility make it suitable for driving actuators, valves, and other analog control elements. When designing with the AD5422, ensure proper decoupling of the AVDD and DVDD supplies, and use a clean analog ground plane. The device requires an external reference for best performance, and the output amplifier can drive capacitive loads up to 1000 pF.
AD5422ACPZ-REEL7 - 16-Bit V/I Out DAC | Analog Devices
The AD5422ACPZ-REEL7 is a single-channel, 16-bit, serial input, current source and voltage output digital-to-analog converter (DAC) from Analog Devices, designed for industrial process control applications. It is housed in a 40-lead LFCSP-VQ (6x6 mm) package and operates over a wide supply range. The device integrates a programmable current source (0 mA to 24 mA) and a programmable voltage output (0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V), making it highly versatile for actuator control, PLCs, and transmitter systems. A digital-to-analog converter (DAC) is an electronic circuit that converts digital binary data into an analog voltage or current. The AD5422 belongs to the family of precision DACs used in industrial control loops, where it translates digital setpoints from a microcontroller or FPGA into precise analog signals that drive valves, motors, or transmitters. It is a key component in the signal chain from digital control to physical actuation, bridging the digital and analog domains. Key features include 16-bit resolution, a flexible serial interface (SPI-compatible), and an on-chip precision reference. The device offers a monotonic output with low integral nonlinearity (INL) and differential nonlinearity (DNL), ensuring accurate analog representation. It also includes a HART (Highway Addressable Remote Transducer) connectivity mode, allowing the DAC to superimpose a frequency-shift keying (FSK) signal on the current loop for smart transmitter communication. The AD5422 uses a segmented architecture with a precision resistor ladder and a programmable gain amplifier to achieve its output ranges. It operates from a single 10.8 V to 40 V supply for the current loop and a separate digital supply (2.7 V to 5.5 V), enabling direct interface with low-voltage logic. The device includes a power-on reset, a clear pin, and a fault alarm output, enhancing system reliability. Typical applications include industrial process control, PLC analog output modules, HART transmitters, and actuator control. Its high accuracy and flexible output ranges make it suitable for both current-loop and voltage-output systems, reducing component count and board space. When designing with the AD5422, ensure proper decoupling of the AVDD and DVDD supplies, and consider the thermal performance of the LFCSP package when driving high current loads. The HART mode requires careful filtering to avoid signal distortion.
AD5535ABCZ - 32-Channel 14-Bit DAC, 50-200V | Analog Devices
The AD5535ABCZ is a 32-channel, 14-bit digital-to-analog converter (DAC) with an integrated high-voltage output amplifier, manufactured by Analog Devices. It is housed in a 124-ball CSPBGA (15x15 mm) package and is specifically designed for optical microelectromechanical systems (MEMS) and other high-voltage precision control applications. The device features a full-scale output voltage programmable from 50 V to 200 V via the reference input, with a 700 μA drive capability per channel. It guarantees monotonicity and offers a 1.2 MHz channel update rate, making it suitable for high-speed, multi-channel systems. A DAC (digital-to-analog converter) is an electronic component that converts digital binary data into an analog voltage or current. The AD5535 is a high-voltage, multi-channel DAC, which falls under the category of data acquisition components, specifically within the broader family of digital-to-analog converters. These devices are essential in systems where precise analog control signals must be generated from digital processing, such as in industrial automation, test equipment, and MEMS control. The AD5535's high-voltage output capability distinguishes it from standard low-voltage DACs, enabling direct drive of actuators and other high-voltage loads. Key features of the AD5535ABCZ include its 32 independent channels, each with a 14-bit resolution, ensuring fine analog output steps. The integrated high-voltage amplifier eliminates the need for external amplification, simplifying design and reducing component count. The device also includes an integrated silicon diode for temperature monitoring, which is critical for thermal management in high-power applications. The serial interface is DSP- and microcontroller-compatible, and an asynchronous RESET facility allows for quick system initialization. From a technical perspective, the AD5535 utilizes a segmented architecture to achieve 14-bit accuracy while maintaining a small die size. The output amplifier is capable of sourcing 700 μA, which is sufficient for driving capacitive loads typical in MEMS applications. The reference input allows the full-scale output to be set between 50 V and 200 V, providing flexibility for various system requirements. The device operates over a temperature range of -10°C to +85°C, as indicated in the datasheet. Typical applications include optical MEMS systems, where precise high-voltage control of micro-mirrors or other actuators is required. It is also used in industrial process control, automated test equipment, and medical instrumentation that demands high-voltage analog outputs. The AD5535's high channel count and update rate make it ideal for multi-axis control systems. When designing with the AD5535, it is important to consider the power dissipation, as the high-voltage output stages can generate significant heat. Proper PCB layout with adequate thermal vias and a solid ground plane is recommended. Additionally, the reference input should be bypassed with a low-ESR capacitor to ensure stable operation.
AD5535ABCZ-REEL7 - 32-Channel 14-Bit DAC | Analog Devices
The AD5535ABCZ-REEL7 is a 32-channel, 14-bit digital-to-analog converter (DAC) with an integrated high-voltage output amplifier, designed for precision control in optical microelectromechanical systems (MEMS) and other high-voltage applications. Housed in a 124-ball CSPBGA (15x15 mm) package, this device offers a full-scale output voltage programmable from 50 V to 200 V via the reference input, with a 700 μA drive capability. The AD5535 guarantees monotonicity and includes an integrated silicon diode for temperature monitoring, making it suitable for demanding industrial and scientific instrumentation. A DAC is a device that converts digital signals into analog voltages or currents. The AD5535 is a specific type of DAC with multiple channels and high-voltage outputs, enabling precise control of actuators, piezoelectric devices, and other high-voltage loads. It belongs to the family of data converters, which are essential in bridging the digital and analog worlds in electronic systems. Key features include a 1.2 MHz channel update rate, an asynchronous RESET facility, and a DSP-/microcontroller-compatible serial interface. The device operates over a wide temperature range and is available in a compact CSPBGA package, facilitating high-density PCB layouts. The integrated high-voltage amplifier eliminates the need for external amplification stages, simplifying design and reducing component count. The AD5535 utilizes a segmented architecture to achieve 14-bit resolution with guaranteed monotonicity, ensuring accurate and predictable output across the full range. The high-voltage output stage is capable of driving capacitive loads typical of MEMS actuators, with a slew rate sufficient for real-time control applications. The integrated temperature diode provides a means for thermal monitoring, enabling system-level protection and calibration. Typical applications include optical MEMS mirror arrays, adaptive optics systems, precision voltage biasing, and automated test equipment. The device's ability to generate high voltages with high resolution makes it ideal for controlling piezoelectric actuators and electrostatic MEMS devices. When designing with the AD5535, it is important to consider the thermal dissipation of the high-voltage output stage and to provide adequate decoupling on the power supply pins. The reference input should be driven by a low-noise, stable voltage source to achieve optimal performance.
AD5545BRUZ - Dual 16-Bit Current-Output DAC | Analog Devices
The Analog Devices AD5545BRUZ is a dual, 16-bit, current-output, serial-input digital-to-analog converter (DAC) housed in a 16-pin TSSOP (RU-16) package. It operates from a single 4.5V to 5.5V supply and delivers ±1 LSB DNL monotonicity with ±1 LSB INL linearity. The full-scale output current is 2 mA ±20%, set by an external reference voltage, and an internal feedback resistor (RFB) simplifies I-to-V conversion when combined with an external op amp such as the AD8038. A multiplying DAC is a converter whose output is the product of a digital input code and an analog reference voltage, enabling four-quadrant operation when bipolar signals are applied. The AD5545 belongs to the current-output multiplying DAC category, which sits within the broader hierarchy of digital-to-analog converters -> data converters -> mixed-signal ICs -> semiconductor devices. Current-output architectures are favored where the reference must vary with a signal (such as in gain control, attenuators, or automatic test equipment) rather than being a fixed precision voltage. Key features include a 2Q multiplying reference input, 0.5 µs full-scale settling time, and a bipolar output swing of up to ±15 V when used with an external high-voltage op amp. The serial interface is SPI/QSPI/MICROWIRE-compatible and supports high-speed write cycles. The dual-channel integration makes the device suitable for complex waveform generation, I/Q signal synthesis, and simultaneous update applications. Typical applications include programmable gain/attenuation stages, digital waveform synthesis, ATE (automatic test equipment) calibration, industrial process control, and precision instrumentation. The wide reference input bandwidth allows the AD5545 to function as a digitally controlled variable attenuator when paired with a high-speed current-to-voltage op amp. When designing with this DAC, ensure the external I-to-V op amp has sufficient bandwidth and slew rate to settle within the 0.5 µs specification. Decouple VDD with a 1 µF tantalum plus 0.1 µF ceramic combination placed close to the supply pin, and route the analog ground return directly to the load to avoid ground-loop errors. This page synthesizes distributor pricing, parametric data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
AD5545BRUZ-REEL7 - Dual 16-Bit I-Out DAC | Analog Devices
The Analog Devices AD5545BRUZ-REEL7 is a dual, 16-bit, current-output, serial-input digital-to-analog converter (DAC) housed in a 16-pin TSSOP package. It operates from a single 5 V supply with bipolar output swing capability up to +/-15 V, requires an external reference to set the full-scale output current, and provides 2 mA full-scale current with +/-20% accuracy relative to VREF. Each channel settles to within +/-1 LSB in 0.5 us, supporting high-precision signal generation. A multiplying DAC is a converter whose output is the product of a digital code and an analog reference input. This category sits within the broader hierarchy of digital-to-analog converters -> data converters -> mixed-signal ICs -> semiconductors. Multiplying DACs are typically implemented with R-2R ladder networks because the architecture allows the reference input to vary (including AC) without disturbing monotonicity, and is therefore preferred over resistor-string designs when 4-quadrant multiplication, bipolar operation, or wide reference range is required. Key features of the AD5545 include +/-1 LSB DNL (monotonic), +/-1 LSB INL, a 3-wire serial interface (SDI, CLK, CS) compatible with microcontrollers, and an LDAC function that allows simultaneous update of both DAC outputs. The internal reset logic supports power-on preset and dynamic reset at either zero or midscale, configurable via the MSB pin. Input reference voltages are accepted in the range of -12 V to +12 V with a constant nominal input resistance of 5 kohm +/-30%, enabling 4-quadrant multiplication. Internally the AD5545/AD5555 use a matched thin-film R-2R ladder network per channel with CMOS switches steered by the input register, a precision bandgap-based reference input conditioning network, and an LDAC-triggered double-buffered latch architecture. This topology delivers low gain error and excellent DC accuracy while keeping digital feedthrough low. AC reference inputs are also accommodated, making the part suitable for waveform generation and audio gain control. Typical applications include precision instrumentation, automatic test equipment (ATE) level setting, digitally controlled calibration, waveform synthesis, audio gain control, and industrial process control. The wide bipolar output swing and multiplying capability make it especially attractive for four-quadrant signal chains and high-accuracy analog output modules in PLC and data-acquisition systems. When designing with the AD5545, choose a low-offset, low-noise op-amp such as the AD8038 or AD8065 for the I-to-V conversion stage, and lay out the TSSOP footprint with analog/digital ground partitioning. Reference decoupling with 0.1 uF close to the REF pin is recommended, and the LDAC line should be tied high for simultaneous update operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving the engineer a faster path from selection to qualified PCB.
AD561SD/883B - 10-Bit Monolithic DAC | Analog Devices
The AD561SD/883B is a 10-bit digital-to-analog converter (DAC) from Analog Devices, featuring a high-stability voltage reference integrated on a single monolithic chip. It is packaged in a 16-pin hermetically sealed ceramic DIP (CDIP) and is designed for military temperature range operation from -55°C to +125°C. The device uses ten precision high-speed current-steering switches, a control amplifier, and a laser-trimmed thin-film SiCr resistor network to produce a fast, accurate analog output current. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD561SD/883B is a current-output DAC, meaning it outputs a current proportional to the digital input, which can be converted to a voltage using an external op-amp. DACs are fundamental building blocks in data acquisition systems, where they generate analog signals for control, waveform generation, and audio applications. The AD561SD/883B belongs to the family of precision DACs, offering 10-bit resolution and a built-in reference, simplifying system design. Key features of the AD561SD/883B include its 10-bit resolution, monolithic construction with integrated voltage reference, and military-grade screening. The device operates over the full military temperature range of -55°C to +125°C, making it suitable for aerospace and defense applications. The hermetically sealed ceramic DIP package ensures reliability in harsh environments. The laser-trimmed thin-film resistor network provides excellent linearity and accuracy, with a typical settling time of [DATA_NEEDED: settling time] and a gain error of [DATA_NEEDED: gain error]. The AD561SD/883B is designed for high-performance applications where precision and reliability are critical. Its current output can be easily converted to a voltage using an external operational amplifier, and the integrated reference eliminates the need for an external reference source. The device is pin-compatible with other members of the AD561 family, allowing for easy upgrades or replacements. The military-grade screening ensures compliance with stringent quality standards, making it ideal for mission-critical systems. Typical applications include military avionics, radar systems, industrial process control, and test and measurement equipment. The wide operating temperature range and hermetically sealed package make it suitable for extreme environments. When designing with the AD561SD/883B, ensure proper decoupling on the power supply pins and consider the output current-to-voltage conversion circuit to achieve optimal performance.
AD561TD/883B - 10-Bit DAC, Military Grade | Analog Devices
The AD561TD/883B is a low-cost, 10-bit monolithic digital-to-analog converter (DAC) manufactured by Analog Devices, designed for military-grade applications. It features a 10-bit resolution with a settling time of 500 ns, ensuring fast and accurate conversion for high-speed systems. The device operates from a single +5V supply and provides a bipolar output range of ±5V, making it suitable for a wide range of analog output applications. Housed in a 16-pin CERDIP package, the AD561TD/883B is designed for through-hole mounting, offering robust mechanical stability in harsh environments. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD561TD/883B is a specific type of DAC known as a multiplying DAC, which allows the reference voltage to be varied to produce a scaled output. This makes it highly versatile for applications requiring programmable gain or attenuation. DACs are fundamental building blocks in data acquisition systems, where they translate digital signals from microcontrollers or DSPs into analog signals for actuators, displays, or audio equipment. Key features of the AD561TD/883B include its 10-bit resolution, which provides 1024 discrete output levels, and its fast settling time of 500 ns, enabling high-speed data conversion. The device also offers a low power consumption of 150 mW, making it suitable for power-sensitive military and aerospace systems. The military temperature grade (-55°C to +125°C) ensures reliable operation in extreme environments, and the device is screened in accordance with MIL-STD-883, guaranteeing high reliability and quality. Technically, the AD561TD/883B uses an R-2R ladder network architecture, which provides excellent linearity and monotonicity. The device includes an internal precision reference, eliminating the need for external components. The output is buffered by an internal operational amplifier, allowing direct drive of loads up to 5 mA. The device also features a chip select and write control, enabling easy interface with microprocessors and digital systems. Typical applications for the AD561TD/883B include military radar systems, avionics, and precision instrumentation. Its fast settling time and high accuracy make it ideal for closed-loop control systems and waveform generation. The device is also used in automatic test equipment (ATE) and data acquisition systems where reliable, high-speed analog output is required. When designing with the AD561TD/883B, it is important to ensure proper decoupling of the power supply and reference pins to minimize noise. The output should be buffered if driving loads greater than 5 mA. Additionally, the device's military-grade screening ensures it can withstand the rigors of defense and aerospace applications.
AD567SD/883B - 12-Bit DAC, 28-CDIP | Analog Devices
The AD567SD/883B is a complete high-speed 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 dual-in-line package (CDIP) and is designed for military and aerospace applications, meeting MIL-STD-883 Class B standards. The device provides a 12-bit resolution with a settling time of typically 500 ns, ensuring fast and accurate analog output for demanding applications. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD567SD/883B is a voltage-output DAC that uses 12 precision high-speed bipolar current-steering switches and a laser-trimmed thin-film resistor network to achieve high accuracy and fast settling. It is part of the AD567 family of DACs, which are known for their reliability and performance in industrial and military environments. Key features of the AD567SD/883B include a 12-bit resolution, a buried zener reference for low drift, a double-buffered input latch for microprocessor compatibility, and a settling time of 500 ns. The device operates from a +5V and -5V supply, with a full-scale output range of 0V to +10V. It also features a power-on reset that clears the output to zero scale, ensuring predictable startup behavior. The AD567SD/883B is designed for high-reliability applications, with a ceramic package that provides excellent thermal and mechanical stability. The device is fully specified over the military temperature range of -55°C to +125°C, making it suitable for avionics, defense systems, and other harsh environments. Its double-buffered input allows for simultaneous update of multiple DACs, which is critical in multi-channel systems. Typical applications include precision instrumentation, automatic test equipment, military radar systems, and industrial process control. The device's fast settling time and high accuracy make it ideal for waveform generation and closed-loop control systems. When designing with the AD567SD/883B, ensure proper decoupling of the power supplies and a clean analog ground plane to minimize noise. The reference output should be buffered if driving external loads. The device is a mature product and may be subject to obsolescence; verify availability before new designs.
AD570SD/883B - 8-Bit ADC, 25us, MIL-STD-883B | Analog Devices
The AD570SD/883B is a monolithic 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices, processed to MIL-STD-883B Class B for military and high-reliability applications. It integrates a DAC, voltage reference, clock, comparator, successive approximation register, and output buffers on a single chip, requiring no external components for a full-accuracy 8-bit conversion in 25 microseconds. The device operates from -15 V and +5 V supplies (also functional with -12 V) and is packaged in a side-brazed ceramic DIP-18 (SBDIP) with an operating temperature range of -55°C to +125°C. An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital numbers, enabling digital systems to process real-world signals. The AD570 is a successive approximation ADC, a type that uses a binary search algorithm to converge on the digital representation, balancing speed and resolution. It belongs to the broader category of data converters, which are essential in signal processing chains bridging analog sensors and digital processors. Key features include 8-bit resolution, a conversion time of 25 microseconds, and a parallel output interface with 8-bit access. The device offers unipolar and bipolar input ranges, with full-scale calibration and offset adjustments. It is guaranteed to operate with -15 V and +5 V supplies, and also supports -12 V operation. The military-grade processing ensures reliability in harsh environments, with a temperature range of -55°C to +125°C. Technically, the AD570 integrates all conversion functions on a single chip, eliminating the need for external clock or reference components. The successive approximation architecture provides a deterministic conversion time, making it suitable for real-time sampling. The device features a tri-state output buffer for bus-oriented systems, and its bipolar input capability allows direct connection to bipolar analog signals without external level shifting. Typical applications include military avionics, industrial process control, data acquisition systems, and test and measurement equipment where high reliability and wide temperature operation are critical. The AD570SD/883B is particularly suited for legacy military systems requiring a drop-in replacement for the original AD570. When designing with this device, ensure proper supply decoupling and consider the input impedance and settling time for accurate conversions. The device's parallel interface simplifies connection to microprocessors, but timing requirements must be observed for reliable data transfer.
AD571SD/883B - 10-Bit A/D Converter | Analog Devices | Military
The AD571SD/883B is a complete 10-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 comparator in a single 18-pin side-brazed ceramic DIP (SBDIP) package, offering a compact and robust solution for converting analog signals to digital data. The device accepts either unipolar (0 V to +10 V) or bipolar (-5 V to +5 V) analog inputs, selectable by grounding or opening a single pin, and provides true 10-bit accuracy with no missing codes over its full operating temperature range of -55°C to +125°C. An analog-to-digital converter (ADC) is an electronic component that transforms a continuous analog voltage into a discrete digital number proportional to the amplitude of the signal. The AD571SD/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 suitable for a wide range of data acquisition systems. In the hierarchy of signal processing, the ADC sits between the analog sensor/amplifier and the digital processor, serving as the critical bridge that enables digital systems to interpret real-world analog signals. Key features of the AD571SD/883B include a 10-bit resolution, a maximum conversion time of 25 microseconds, and a parallel digital interface for easy connection to microprocessors and digital logic. The device operates from dual supplies of +5 V and -12 V or -15 V, and includes an internal clock and reference, eliminating the need for external components. The military-grade screening (883B) ensures compliance with MIL-STD-883, providing enhanced reliability for demanding environments. Technically, the AD571SD/883B employs a laser-trimmed thin-film resistor network and a high-speed comparator to achieve its accuracy. The device features a full-scale calibration capability, allowing users to adjust the gain and offset for precise measurements. The bipolar offset and unipolar offset pins provide flexibility in configuring the input range, while the differential nonlinearity is guaranteed to be within ±1 LSB over the entire temperature range. Typical applications include military avionics, radar systems, industrial process control, and high-reliability data acquisition systems. The device's wide operating temperature range and hermetic ceramic package make it ideal for harsh environments where standard commercial ADCs would fail. When designing with the AD571SD/883B, ensure that the analog input is properly buffered and that the power supplies are well-decoupled to minimize noise. The internal reference is trimmed at the factory, but external calibration may be required for absolute accuracy in critical applications.
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.