ADC/DAC
Produits (2518)
AD7390BCPZ - 12-Bit Serial DAC, 3V Supply | Analog Devices
The AD7390BCPZ is a 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, designed for single +3 V supply operation. It is built on a CBCMOS process, offering low cost and ease-of-use in single-supply systems. The device operates over a supply range of +2.7 V to +5.5 V while consuming less than 100 µA, making it ideal for battery-powered and portable applications. The AD7390BCPZ comes in a compact 8-lead LFCSP package, providing a small footprint 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. The AD7390 is a voltage-output DAC, meaning it directly outputs a voltage proportional to the digital input code. It is part of the broader family of data converters, which also includes analog-to-digital converters (ADCs). DACs are essential in systems where digital processing must interface with the analog world, such as audio playback, motor control, and sensor calibration. Key features of the AD7390BCPZ include 12-bit resolution, a serial interface compatible with SPI/QSPI/MICROWIRE, and a buffered output that can drive capacitive loads. The device includes a power-on reset that clears the output to zero scale, ensuring predictable startup behavior. The low supply current of less than 100 µA extends battery life in portable devices. The LFCSP package is lead-free and RoHS compliant, meeting modern environmental standards. Technically, the AD7390 uses a resistor-string architecture with an output buffer amplifier. The serial interface allows easy connection to microcontrollers and DSPs with minimal pin count. The device supports a wide operating temperature range of -40°C to +85°C, suitable for industrial environments. The output voltage range is 0 V to VREF, where VREF can be set externally up to the supply voltage. The DAC's settling time is typically 10 µs, enabling moderate-speed applications. Typical applications include digital gain and offset adjustment, programmable voltage references, and industrial process control. In portable instrumentation, the low power consumption is critical for extending battery life. The AD7390BCPZ is also used in automotive electronics for sensor calibration and in communication systems for bias control. When designing with the AD7390BCPZ, ensure that the reference voltage is stable and well-decoupled to achieve full 12-bit accuracy. The serial clock should be kept clean to avoid data corruption. The output buffer can drive up to 100 pF capacitive load without oscillation, but for larger loads, an external buffer may be required.
AD7391BCPZ - 10-Bit Serial DAC | Analog Devices | 32-LFCSP
The AD7391BCPZ is a 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, designed for single-supply operation from +2.7 V to +5.5 V. It features a serial interface, micropower consumption of less than 100 µA, and is available in a 32-lead LFCSP-VQ (5x5 mm) package. This device is part of the AD7390/AD7391 family, which also includes a 12-bit version (AD7390). Built using a CBCMOS process, the AD7391 offers low cost and ease-of-use in single-supply +3 V systems. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. The AD7391 is a voltage-output DAC, meaning it directly outputs a voltage proportional to the digital input. It is a key building block in many systems, bridging the digital domain of microcontrollers and DSPs with the analog world of sensors, actuators, and audio amplifiers. In the hierarchy of signal chain components, a DAC is part of the data converter family, which also includes ADCs (analog-to-digital converters). Key features of the AD7391BCPZ include its 10-bit resolution, serial interface (SPI-compatible), and low power consumption. The device operates from a single +2.7 V to +5.5 V supply, making it ideal for battery-powered and portable applications. It also features a power-down mode that reduces current consumption to a few microamperes, further extending battery life. The output is buffered, providing a low-impedance drive capability. Technically, the AD7391 uses a resistor-string architecture with a rail-to-rail output buffer. This architecture ensures monotonicity and low differential nonlinearity (DNL). The serial interface allows easy connection to microcontrollers and DSPs with minimal pin count. The device is specified over the industrial temperature range of -40°C to +85°C, making it suitable for a wide range of environments. Typical applications include portable instrumentation, battery-powered data acquisition systems, digital gain and offset adjustment, and programmable voltage references. Its low power and small package make it ideal for space-constrained designs. When designing with the AD7391, ensure that the reference voltage is stable and well-decoupled. The output buffer can drive capacitive loads, but for best settling time, keep the load capacitance below 100 pF. Also, use a clean digital supply to avoid noise coupling into the analog output.
AD7392BCPZ - 12-Bit Serial DAC | Analog Devices
The AD7392BCPZ is a 12-bit digital-to-analog converter (DAC) from Analog Devices, featuring a serial interface and a compact 20-lead LFCSP package. It operates from a single 2.7V to 5.5V supply, making it suitable for battery-powered and portable applications. The device includes an internal reference and output amplifier, providing a rail-to-rail output swing. With a typical settling time of 10 µs, it is designed for precision control and signal generation. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. DACs are essential in systems where digital processing must interface with the analog world, such as audio playback, motor control, and sensor calibration. The AD7392BCPZ belongs to the family of serial-input DACs, which use a simple SPI-compatible interface to minimize pin count and simplify PCB layout. This device is part of Analog Devices' precision DAC portfolio, known for high accuracy and low power consumption. Key features of the AD7392BCPZ include 12-bit resolution, a maximum output voltage of VREF (which can be set up to VDD), and a power-down mode that reduces current consumption to 1 µA. The device also offers a clear pin for resetting the output to zero scale, and a reference input that can be driven by an external reference or the internal 2.5V reference. The LFCSP package measures 4mm x 4mm, providing a small footprint for space-constrained designs. Technically, the AD7392BCPZ uses a resistor-string architecture, which ensures monotonicity and low differential nonlinearity (DNL) of ±0.5 LSB. The serial interface is compatible with SPI, QSPI, and MICROWIRE protocols, allowing easy connection to microcontrollers and DSPs. The device operates over a temperature range of -40°C to +85°C, making it suitable for industrial environments. Typical applications include programmable voltage sources, digital gain and offset adjustment, and industrial process control. In portable instrumentation, the low power consumption and small package are critical advantages. The device can also be used in closed-loop servo control systems where precise analog output is required. When designing with the AD7392BCPZ, ensure that the reference voltage is stable and that decoupling capacitors are placed close to the VDD and REF pins. The power-down mode can be used to conserve energy in battery-operated systems, but note that the output will be high-impedance in this mode.
AD7393BCPZ - 12-Bit 3V DAC | Analog Devices | LFCSP-40
The AD7393BCPZ is a 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, designed for single-supply 3 V systems. It operates over a supply range of 2.7 V to 5.5 V, making it ideal for battery-powered and portable applications. The device is built using a CBCMOS process, offering low cost and ease of use. It is pin-compatible with the AD7392 (10-bit) and AD7393 (12-bit) family, allowing straightforward upgrades. The AD7393BCPZ comes in a 40-lead LFCSP-VQ (6x6 mm) package, which is compact and suitable for space-constrained designs. A digital-to-analog converter (DAC) is an electronic circuit that converts digital binary data into an analog voltage or current. The AD7393 is a voltage-output DAC, meaning it directly produces an analog voltage proportional to the digital input code. It is part of the broader category of data converters, which also includes ADCs (analog-to-digital converters). DACs are essential in systems where digital processing must interface with the analog world, such as audio playback, motor control, and instrumentation. The AD7393's single-supply operation simplifies power supply design, reducing system cost and complexity. Key features of the AD7393BCPZ include 12-bit resolution, a 2.7 V to 5.5 V supply range, and a voltage output that is rail-to-rail. It has a typical settling time of 10 µs, ensuring fast response in dynamic applications. The device includes a power-on reset that clears the output to zero scale, preventing glitches during power-up. It also features a low power consumption of typically 1.5 mW at 3 V, making it suitable for battery-powered devices. The LFCSP-40 package provides excellent thermal performance and a small footprint. Technically, the AD7393 uses a resistor-string architecture with a CMOS switch tree, providing monotonic performance and low glitch energy. The CBCMOS process combines bipolar and CMOS transistors, optimizing speed and power. The device has a maximum output voltage of VREF, which can be set externally or tied to the supply. It includes a reference input that can be driven by an external reference or the supply voltage. The digital interface is a simple parallel input, compatible with standard logic levels. Typical applications for the AD7393BCPZ include portable instrumentation, battery-powered data acquisition systems, and programmable voltage sources. Its low power and small package make it ideal for handheld devices, while its 12-bit resolution suits precision control loops. The device is also used in industrial process control and medical devices where a stable, accurate analog output is required. When designing with the AD7393BCPZ, ensure that the reference voltage is stable and well-decoupled to achieve full accuracy. The output can drive capacitive loads up to 100 pF without external compensation. For best performance, place decoupling capacitors close to the supply and reference pins.
AD7394BCPZ - 12-Bit Serial DAC | Analog Devices
The AD7394BCPZ is a 12-bit digital-to-analog converter (DAC) from Analog Devices, featuring a serial interface and dual-channel output. It operates from a single 2.7V to 5.5V supply, making it suitable for battery-powered and portable applications. The device is available in a compact 20-lead LFCSP package, offering a space-saving solution for precision analog output generation. A digital-to-analog converter (DAC) is an electronic component that converts digital binary data into an analog voltage or current. DACs are essential in systems where digital processing must interface with the analog world, such as audio playback, motor control, and sensor calibration. The AD7394BCPZ belongs to the family of serial-input DACs, which use a simple SPI-compatible interface to receive data, reducing pin count and simplifying PCB layout compared to parallel-input DACs. Key features of the AD7394BCPZ include 12-bit resolution, dual buffered outputs, and a rail-to-rail output swing. It offers a typical settling time of 10 microseconds, ensuring fast response in control loops. The device also includes a power-on reset circuit that sets the output to zero scale, preventing unwanted transients during power-up. Its low power consumption, typically 1.5 mA, is ideal for power-sensitive designs. Technically, the AD7394BCPZ uses a resistor-string architecture with an internal output buffer, providing monotonic performance and low glitch energy. The serial interface supports daisy-chaining, allowing multiple DACs to be controlled with a single chip-select line. The device is specified over the industrial temperature range of -40°C to +85°C, ensuring reliable operation in harsh environments. Typical applications include programmable voltage sources, digital gain and offset adjustment, and industrial process control. In audio systems, it can be used for volume control or tone adjustment. Its small footprint and low power make it suitable for portable instrumentation and battery-operated devices. When designing with the AD7394BCPZ, ensure that the reference voltage is stable and adequately decoupled. The output buffer can drive capacitive loads up to 100 pF without oscillation, but larger loads may require an external buffer. Proper layout with a solid ground plane is recommended to minimize noise and achieve full 12-bit accuracy.
AD74416HBCPZ - Quad Channel Flexible I/O with HART | Analog Devices
The AD74416HBCPZ is a quad-channel, software-configurable input/output (I/O) device from Analog Devices, designed for industrial process control and smart transmitter applications. It integrates four channels that can be independently configured as analog input (voltage or current), analog output (voltage or current), digital input, or digital output, all controlled via a serial peripheral interface (SPI). The device features a 16-bit resolution and supports a data rate of 19.2 kSPS, making it suitable for high-precision measurement and control loops. It is housed in a 64-lead LFCSP (9x9 mm) package, offering a compact solution for space-constrained industrial modules. A software-configurable I/O (SIO) device is a versatile analog front-end that replaces multiple discrete components (e.g., ADCs, DACs, op-amps, and protection circuits) with a single programmable IC. It sits within the data acquisition subsystem of a programmable logic controller (PLC) or distributed control system (DCS), bridging field sensors/actuators to the digital control core. By reconfiguring each channel via software, the same hardware can handle diverse signal types, reducing BOM cost and board area while simplifying inventory management. Key features of the AD74416HBCPZ include integrated HART (Highway Addressable Remote Transducer) modem support, which enables simultaneous analog and digital communication over the same two-wire loop. The device provides two address pins to support up to four devices on a single SPI bus, facilitating multi-channel expansion. It also includes a 16-bit sigma-delta ADC and a 16-bit DAC per channel, ensuring high accuracy. The SPI interface operates at up to 19.2 kHz, and the device supports both SPI and GPIO access for digital I/O, enabling flexible system integration. From a technical perspective, the AD74416HBCPZ employs a precision analog front-end with programmable gain and filtering, allowing direct connection to 4-20 mA loops, thermocouples, RTDs, and voltage signals. The HART modem is fully compliant with the HART protocol, enabling digital communication without disrupting the analog signal. The device operates from a single 3.3 V or 5 V supply and includes on-chip diagnostics, such as open-wire detection and overcurrent protection, enhancing system reliability. Typical applications include PLC analog I/O modules, industrial process transmitters, smart valve positioners, and building automation controllers. The AD74416HBCPZ is ideal for these applications because it reduces component count, simplifies design, and provides high accuracy over extended temperature ranges (-40°C to +105°C). When designing with this device, ensure proper decoupling on the AVDD and DVDD supplies, and use a clean ground plane to minimize noise. The SPI lines should be kept short and shielded if possible, and the HART output requires an external analog front-end (e.g., a HART modem IC) for full compliance.
AD7441BRT-R2 - 10-Bit 1MSPS Pseudo-Diff ADC | Analog Devices
The Analog Devices AD7441BRT-R2 is a 10-bit, 1 MSPS (million samples per second) successive-approximation analog-to-digital converter (ADC) housed in an 8-pin SOT-23 package. It operates from a 4.75 V to 5.25 V analog supply, achieves 4 mW maximum power dissipation at 1 MSPS with VDD = 3 V, and accepts both pseudo-differential and single-ended analog input configurations. According to the Analog Devices datasheet, the part supports SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interfaces and integrates an internal 2.5 V reference. A successive-approximation register (SAR) ADC is a converter architecture that performs a binary search through internal capacitive or charge-redistribution DACs to resolve the analog input one bit per clock cycle. ADCs in this class sit within the broader hierarchy of analog-to-digital converters -> data converters -> data acquisition ICs -> signal chain -> mixed-signal semiconductors. SAR ADCs are favoured when designers need deterministic latency, no pipeline delay, AC or DC accuracy in the 8-to-16-bit range, and the ability to be duty-cycled for low standby power. Key features of the AD7441BRT-R2 include 1 MSPS throughput with throughput-dependent scaling of power dissipation, pseudo-differential analog input for ground-loop-tolerant single-ended measurements, low power consumption of 4 mW maximum at 1 MSPS with VDD = 3 V and 9.25 mW maximum at 1 MSPS with VDD = 5 V, a hardware-configurable analog input range of 0 V to VREF or 0 V to 2xVREF, and an integrated bandgap reference. The SOT-23-8 footprint places this 10-bit ADC into pad-constrained designs where QFN- or TSSOP-class packages would be too large. The internal conversion is built around a charge-redistribution DAC array and a high-speed comparator, with the SAR control logic latching results into an internal register that is then shifted out through SCLK/SDATA over a four-wire serial link. Power consumption scales linearly with throughput, allowing designers to reduce conversion rate after acquisition to save energy in battery-powered monitoring loops. The pseudo-differential input stage measures IN+ relative to IN- and tolerates common-mode noise on the system ground, which is critical when digitising signals across isolation barriers or long sensor cables. Typical applications for the AD7441BRT-R2 include industrial process-control front ends, battery monitoring for 12-to-48 V battery stacks, motor-control current-sense digitisation, handheld instrumentation, optical module monitoring, and general-purpose data-acquisition boards. Designers choose this ADC when a 10-bit result over an input range of a few volts is sufficient and PCB area is at a premium. When designing with this part, evaluate the input bandwidth and acquisition time required by the sensor or signal source. The SOT-23-8 thermal envelope limits continuous 1 MSPS operation to lower duty cycles unless the analog input span is small; designers must provide proper decoupling on both VDD and REF pins and route the serial interface traces away from the analog input to avoid digital-coupling noise. This page synthesises distributor pricing from DigiKey, Mouser, and Octopart alongside drop-in SAR ADC alternatives and practical design notes - offering actionable selection guidance beyond the manufacturer datasheet alone.
AD7450ARZ-REEL - 12-Bit 1MSPS SAR ADC Differential Input | Analog Devices
The Analog Devices AD7450ARZ-REEL is a 12-bit, high-speed, low-power, successive-approximation (SAR) analog-to-digital converter featuring a fully differential analog input, packaged in an 8-pin SOIC (MO-187AA / MSOP-8) and supplied on a 7-inch tape and reel. It operates from a single 3 V or 5 V power supply and provides throughput rates up to 833 kSPS (3 V) or 1 MSPS (5 V). The external reference voltage on the VREF pin can be varied from 100 mV to 3.5 V to suit the application. A SAR ADC is a successive-approximation analog-to-digital converter that uses a binary-search algorithm and a single high-precision comparator to digitize analog signals. SAR ADCs sit in the broader signal chain hierarchy of data converters -> ADC -> Nyquist-rate converters -> successive-approximation ADCs, and are valued for their deterministic latency, low power, and excellent DC accuracy. Key features include a fully differential analog input, pseudo-differential or true-differential sampling modes, throughput rates of 1 MSPS at VDD=5V or 833 kSPS at VDD=3V, very low power consumption (typically 4 mW at 3 V, 9 mW at 5 V), a high-speed serial SPI/QSPI/MICROWIRE-compatible interface, and an industrial operating temperature range of -40 C to +85 C. The differential input stage and small package make it suited to dense precision designs. Internally the AD7450 uses a charge-redistribution DAC array with a sample-and-hold front-end that is fully differential, achieving excellent common-mode noise rejection and supporting bipolar input ranges when paired with a true bipolar reference. The serial interface is simple and glueless to most modern microcontrollers and DSPs. Typical applications include industrial process control, data acquisition systems, portable battery-powered instrumentation, motor control feedback loops, and precision sensor signal conditioning. The wide input voltage compliance (-2 V to +2 V at 5 V supply) supports both single-ended sensor bridges and differential signal chains. When designing with the AD7450ARZ-REEL, place the 0.1 uF + 10 uF decoupling capacitors as close to the AVDD pin as possible, route the differential inputs as a matched pair, and verify that the VREF source can supply the dynamic charge currents demanded by the SAR conversion. This page synthesizes ADI datasheet specifications, distributor pricing as of 2026-10-12, and pin-compatible drop-in alternatives from the same ADI family and competing manufacturers - information not available on any single distributor or manufacturer page.
AD7451ART-R2 - 12-Bit 1 MSPS Pseudo-Diff SAR ADC | Analog Devices | SOT-23-8
The Analog Devices AD7451ART-R2 is a 12-bit, 1 MSPS successive-approximation analog-to-digital converter (ADC) in an 8-lead SOT-23 package with a pseudo-differential analog input. Specified for VDD from 2.7 V to 5.25 V, it consumes 4 mW maximum at 1 MSPS with VDD = 3 V and 9.25 mW maximum at 1 MSPS with VDD = 5 V. The serial interface is compatible with DSP, MICROWIRE, QSPI, and SPI. Analog Devices positions the part as a low-power, high-speed SAR ADC for space-constrained single-channel data acquisition. A SAR (successive-approximation-register) ADC is one of the two dominant architectures for medium-speed, medium-resolution data conversion. Unlike delta-sigma ADCs that oversample and integrate over many clock cycles, a SAR ADC performs a binary search across an internal capacitive DAC in a single conversion cycle, producing a latency of one clock period. The result is predictable, alias-free behavior at Nyquist, deterministic settling, and very low pipeline delay, which makes SAR ADCs the preferred choice for multiplexed multi-channel systems, motor control feedback loops, and instrumentation front-ends. Key differentiating features of the AD7451ART-R2 include a 70 dB SINAD rating at a 100 kHz analog input frequency, a wide-bandwidth low-noise differential track-and-hold front-end that handles input signals above 1 MHz, and a programmable flexible power/serial-interface management. The external VREF input accepts 100 mV to 3.5 V (or up to VDD), giving designers fine control over the input full-scale range. An overbar CS (active-low chip select) and serial clock control the conversion and data acquisition, supporting direct connection to microprocessors and DSPs without glue logic. Architecturally, the device pairs a low-noise wide-bandwidth differential T/H amplifier with a charge-redistribution SAR core and an on-chip conversion clock. The pseudo-differential input means IN+ is sampled against GND with IN- providing only common-mode rejection, simplifying front-end drive versus a fully-differential topology. External reference decoupling is critical to realizing the datasheet SINAD figure. Typical applications include industrial process control loop monitoring, portable battery-powered instrumentation, optical-module photodiode current sensing (with external TIA), and general-purpose data acquisition in PLC analog input modules. Designers should note that achieving the 70 dB SINAD figure requires a clean, well-bypassed external reference and a low-impedance analog input driver; small SOT-23-8 thermal limits also constrain continuous duty cycle at full 1 MSPS. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in any single manufacturer datasheet.
AD7451BRT-R2 - 12-Bit 1MSPS Pseudo-Diff SAR ADC | ADI
The Analog Devices AD7451BRT-R2 is a 12-bit, 1 MSPS successive-approximation (SAR) analog-to-digital converter with a pseudo-differential analog input, packaged in an 8-pin SOT-23 (RT) on a 7-inch tape-and-reel. It operates from a single 2.7 V to 5.25 V supply, draws 4 mW at 1 MSPS with VDD of 3 V, and integrates a low-noise, wide-bandwidth track-and-hold that does not require an external buffer. A successive-approximation ADC (SAR ADC) is a type of Nyquist-rate converter that uses an internal binary-search capacitor array to resolve one bit per clock cycle, producing deterministic latency, no pipeline delay, and excellent DC accuracy. SAR ADCs sit beneath the broader ADC hierarchy (SAR > Nyquist-rate > data converter > mixed-signal IC > semiconductor) and are favored when applications need simultaneous high accuracy, low latency, and small package size. The AD7451 family extends that architecture into an ultra-miniature 8-pin SOT-23, making it the smallest true 12-bit 1 MSPS ADC in ADI's catalog at release. Key specifications include 12-bit resolution, 1 MSPS throughput, pseudo-differential input (IN+ and IN- with IN- usable as ground sense), 4 mW power dissipation at 1 MSPS with VDD = 3 V (9.25 mW with VDD = 5 V), SPI/QSPI/MICROWIRE/DSP-compatible serial interface, and an operating temperature range suitable for industrial environments. The pseudo-differential topology rejects small common-mode noise and supports rail-to-rail single-ended sources with proper reference design. Typical applications include precision industrial process control, portable and battery-powered instrumentation, optical sensor front-ends (photodiode/phototransistor read-out), data acquisition boards, motor control current sensing, and medical patient-monitoring front-ends. The SOT-23-8 footprint is particularly attractive for space-constrained PCB designs where a 12-bit accurate signal chain must fit alongside dense digital logic. When designing with this part, place a 100 nF decoupling capacitor within 2 mm of the VDD pin and a 10 µF bulk capacitor on the supply trace; the reference input (REF) requires a low-impedance 2.5 V reference such as the ADR01 or ADR02 for full 12-bit performance. The -R2 tape-and-reel suffix designates packaging only and does not affect electrical behavior. This page synthesizes cross-reference alternatives, distributor pricing, application guidance, and practical PCB notes that go beyond what the bare datasheet reveals.
AD7452BRT-R2 - 12-Bit 555kSPS SAR ADC | Analog Devices | SOT-23-8
The Analog Devices AD7452BRT-R2 is a 12-bit, high-speed, low-power successive-approximation (SAR) analog-to-digital converter featuring a fully differential analog input, packaged in an 8-pin SOT-23 and offered on a 2,500-piece reel. It operates from a single 3V or 5V power supply and achieves throughput rates up to 555 kSPS while consuming only 1.2 mW of power at 3V and 555 kSPS, making it well suited to battery-powered and portable data-acquisition systems. An SAR ADC is a successive-approximation analog-to-digital converter that uses a binary-search algorithm against an internal DAC to digitize an analog input in N clock cycles (where N is the resolution in bits). Within the converter hierarchy, the AD7452 sits as: ADC -> data converter -> data acquisition IC -> signal-chain component. SAR converters are valued for deterministic latency, single-shot accuracy and DC-friendly behavior - ideal when a precise snapshot, not a continuous waveform stream, is required. Key features of the AD7452BRT-R2 include 12-bit resolution with no missing codes, a fully differential analog input that supports rail-to-rail common-mode swing, an internal 2.5V reference (or option to overdrive with an external reference), a high-speed serial (SPI/QSPI/MICROWIRE/DSP-compatible) interface, and a hardware power-down pin that drops supply current to sub-microamp levels for battery conservation. The architecture combines a low-noise, low-power comparator with a precision switched-capacitor DAC and an internal oscillator, eliminating the need for an external clock. The result is a compact solution that delivers strong AC (THD, SNR) and DC (DNL, INL) performance while keeping the external BOM to the analog front end, reference bypass capacitors and decoupling only. Typical applications include portable instrumentation, sensor signal conditioning (pressure, temperature, strain gauge bridges), data acquisition boards, and battery-powered transducers. The 555 kSPS throughput is sufficient for industrial process-control loops, instrumentation-grade weigh scales and many audio-bandwidth measurement tasks. One practical design consideration: at 5V supply, power dissipation rises with sample rate; route an analog ground return around the input pins and use a 0.1uF ceramic bypass cap adjacent to AVDD to maintain the rated SNR. Choosing between AD7452BRT (legacy packaging) and AD7452BRTZ-R2 depends on whether the design needs the original SOT-23-8 marking or the Z-suffix lead-free SOT-23-8 variant. This page consolidates distributor pricing, parametric comparison vs SAR alternatives and practical design notes not found in the manufacturer datasheet alone, including drop-in and pin-compatible cross-brand considerations for both new designs and legacy 8-pin SOT-23 SAR ADC sockets.
AD7466BRT-R2 - 12-Bit 200kSPS Micropower ADC | Analog Devices
The Analog Devices AD7466BRT-R2 is a 12-bit, high-speed, low-power successive approximation register (SAR) analog-to-digital converter (ADC) in a 6-pin SOT-23 (RT) package. It operates from a single 1.6 V to 3.6 V power supply and supports throughput rates up to 200 kSPS, drawing only 0.62 mW typical at 100 kSPS with a 3 V supply. The internal reference is taken from VDD, allowing the widest dynamic input range with an analog input span of 0 V to VDD. What is a SAR ADC? A successive approximation register analog-to-digital converter is a precision data conversion IC that uses a binary search algorithm to resolve an analog input voltage into a digital code, one bit per clock cycle. SAR ADCs sit within the broader hierarchy: data-converter -> ADC -> precision converter -> signal chain IC. They are valued for high accuracy at moderate sample rates, low latency, deterministic conversion time, and very low power consumption, making them the workhorse of battery-powered and instrumentation applications. Key features include a flexible serial interface compatible with DSP, MICROWIRE, QSPI, and SPI host controllers; an automatic power-down mode between conversions that drops quiescent current to under 1 microampere; and a wide 1.6 V to 3.6 V single-supply range. The SOT-23-6 footprint makes AD7466BRT-R2 one of the smallest precision 12-bit ADCs available, ideal for space-constrained designs. No external reference is required, simplifying BOM cost. Technically, the AD7466BRT-R2 uses a switched-capacitor charge redistribution architecture with input sampling on the falling edge of CS and conversion driven by the external SCLK. The reference is internally tied to VDD, which trades absolute accuracy for simplicity and minimum external parts. Signal-to-noise-plus-distortion ratio (SINAD) tracks VDD, and integral nonlinearity (INL) and differential nonlinearity (DNL) are specified for industrial temperature grades. Typical applications include portable and battery-powered measurement systems, medical instrumentation front-ends, remote and isolated data acquisition modules, optical sensor monitoring, and low-power industrial sensor interfaces. The part is widely used wherever a 12-bit conversion is sufficient and board area is critical. A key design tip: the SCLK idle state must be set high to match the AD7466 logic convention, and the CS falling edge initiates both sampling and conversion - there is no separate sample/hold control. Bypass VDD with a 1 microfarad plus 100 nanofarad capacitor pair placed within 3 mm of the supply pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-ready reference for the AD7466BRT-R2.
AD7468BRT-R2 - 8-Bit 200kSPS Micro-Power ADC | Analog Devices
The Analog Devices AD7468BRT-R2 is an 8-bit, high-speed, low-power, successive-approximation analog-to-digital converter (SAR ADC) in a 6-pin SOT-23 package, operating from a single 1.6 V to 3.6 V supply and supporting throughput rates up to 200 kSPS. The R2 suffix indicates a 2,500-piece tape-and-reel packaging variant for high-volume manufacturing. A successive-approximation ADC is a type of data converter that converts an analog input voltage into a digital code by performing a binary search across an internal precision DAC, comparing the reconstructed voltage to the input on each clock cycle. The SAR architecture is prized for low power, deterministic latency, and excellent DC accuracy - it occupies the architectural middle ground between flash ADCs (fast but expensive) and integrating/delta-sigma ADCs (precise but slower). It belongs to the broader hierarchy: ADC -> data converter -> signal chain IC -> semiconductor. Key features of the AD7468BRT-R2 include 8-bit resolution, 200 kSPS throughput, 1.6 V to 3.6 V single-supply operation, and an extremely low power dissipation of 0.62 mW typical at 100 kSPS with a 3 V supply (0.12 mW at 100 kSPS / 1.6 V). The device includes a high-speed SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface, pseudo-differential analog input, and built-in power-down control via the CS bar pin, which reduces current draw between conversions and makes the part ideal for battery-powered systems. The AD7468BRT-R2 uses a charge-redistribution SAR core with an input bandwidth that comfortably exceeds the Nyquist requirement for 8-bit conversion at 200 kSPS, eliminating the need for an external input buffer in many applications. The wide supply range allows direct interfacing with low-voltage microcontrollers, 1.8 V DSPs, and modern battery chemistries (Li-Ion, coin-cell, energy-harvested rails). Typical applications include battery-powered monitoring systems, portable medical instruments (pulse oximeters, glucose meters), remote data acquisition nodes, isolated data acquisition front-ends, and transducer/sensor signal digitisation. The 6-pin SOT-23 footprint is among the smallest ADC packages available, making the part attractive for space-constrained PCB designs. When designing with this device, observe the analog input bandwidth specification - the -3 dB input bandwidth is typically 2 MHz, so excessive input source impedance can introduce gain error. Use the power-down feature between bursts of conversions to extend battery life by an order of magnitude. This page synthesises distributor pricing, parametric drop-in alternatives, and PCB layout notes for engineers who need to specify or second-source the AD7468BRT-R2 in compact, low-power designs.
AD7472ARUZ-REEL - 12-Bit 1.5MSPS SAR ADC | Analog Devices
The Analog Devices AD7472ARUZ-REEL is a 12-bit, 1.5 MSPS successive-approximation analog-to-digital converter (SAR ADC) with a parallel data interface, housed in a 24-pin TSSOP (RU-24) package. It operates from a single 2.7 V to 5.25 V power supply and dissipates only 3.34 mW typical at 1.5 MSPS with 3 V supplies (7.97 mW typical at 5 V), making it well-suited for power-sensitive applications. The device accepts a single-ended analog input on one channel and delivers conversion results through a high-speed parallel interface that can be directly connected to microcontrollers, DSPs, or FPGAs. An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary search algorithm, an internal DAC, and a comparator to digitize an analog input one bit at a time over N clock cycles, where N equals the converter's resolution. SAR ADCs occupy the middle ground between flash converters (fastest, most power-hungry) and sigma-delta ADCs (highest resolution, lowest speed), making them ideal for general-purpose industrial, instrumentation, and communication applications that need single-shot or burst-mode conversion at hundreds of kSPS to a few MSPS. The AD7472 family sits in the data acquisition -> ADC -> SAR ADC -> semiconductor taxonomy of signal-chain components. Key features include 12-bit resolution with no missing codes, a track-and-hold front end, low power consumption, and a wide input bandwidth suitable for multiplexed or single-channel systems. The wide 2.7 V to 5.25 V supply range allows designers to power the part directly from a 3.3 V or 5 V system rail, simplifying power-tree design. Industrial temperature grade (-40C to +85C) and TSSOP surface-mount packaging support compact PCB layouts. Typical applications include industrial process control, portable and battery-powered instrumentation, data acquisition systems, optical networking modules, and motor control feedback loops. The parallel interface and moderate throughput make it well matched to embedded control tasks where deterministic latency is more important than serial-link compactness. When designing with this ADC, place a low-ESR 100 nF decoupling capacitor close to the VDD pin and a bulk 10 uF capacitor on the supply rail. Provide a clean low-impedance reference voltage to the REFIN pin and ensure the analog input bandwidth is matched to the source impedance to avoid conversion errors. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes that complement the manufacturer datasheet for the AD7472ARUZ-REEL.
AD7472BRU-REEL - 12-Bit 1.5 MSPS Parallel ADC | Analog Devices
The Analog Devices AD7472BRU-REEL is a 12-bit, 1.5 MSPS successive-approximation analog-to-digital converter (SAR ADC) with a parallel interface, housed in a 24-pin TSSOP package. It accepts a 0 V to 2.5 V analog input, operates from a 2.7 V to 5.25 V single supply, and consumes only 3.34 mW typical at 1.5 MSPS with a 3 V supply or 7.97 mW at 1.75 MSPS with a 5 V supply. The part is specified for industrial temperature range (-40 C to +85 C) and is supplied on a 7-inch reel. A SAR ADC is a type of analog-to-digital converter that uses a binary-search successive-approximation algorithm with an internal DAC and comparator to digitize a single analog sample per conversion cycle. SAR ADCs sit in the broader hierarchy of ADC architectures (SAR -> Nyquist-rate ADC -> data converter -> mixed-signal IC -> semiconductor), favored over pipeline or delta-sigma types where low latency, deterministic single-cycle conversion, and simple digital control are required. Key features include 1.5 MSPS guaranteed throughput on the 12-bit grade (the 10-bit AD7470 in the family runs to 1.75 MSPS), a low-power CMOS process with auto-shutdown between conversions, and a high-speed parallel output bus that connects directly to microprocessors, microcontrollers, or ASICs without glue logic. The input is sampled on the falling edge of CONVST and the result is latched on the rising edge of the same signal, simplifying system timing. The internal architecture combines a track-and-hold amplifier, a precision charge-redistribution DAC, a comparator, and a successive-approximation register. The 0 V to 2.5 V input range is well suited to single-supply sensor conditioning, and the wide 2.7 V-5.25 V supply range lets the same part work in both 3 V and 5 V systems without level shifting. Typical applications include battery-powered instrumentation, data acquisition boards, CCD imaging front-ends, optical measurement systems, and process control loops. The low power and small TSSOP footprint also suit handheld test equipment and dense multi-channel acquisition boards. When designing with this ADC, budget the input settling time and ensure the source impedance seen at the analog input is well below the datasheet's recommended maximum to avoid gain errors. Use a low-impedance reference and adequate decoupling on VDD and REFIN to preserve linearity. This page synthesizes reel-packaging pricing, drop-in TSSOP alternatives, and practical design notes that are not found in the manufacturer datasheet alone, helping engineers select, source, and qualify the AD7472BRU-REEL faster.
AD7475ARM-REEL7 - 12-bit 1MSPS SAR ADC | Analog Devices
The Analog Devices AD7475ARM-REEL7 is a 12-bit, high-speed, low-power successive-approximation register (SAR) analog-to-digital converter (ADC) that operates from a single 2.7V to 5.25V supply and delivers throughput rates up to 1 MSPS. Packaged in an 8-pin MSOP (RM-8) and supplied on a 7-inch reel, the part integrates a low-noise wide-bandwidth track-and-hold amplifier capable of processing input signals beyond 1 MHz. The 2.5V reference is applied externally to the REF IN pin, allowing designers to optimise dynamic range for each application by selecting the most appropriate external reference. The serial interface is compatible with DSP, MICROWIRE, QSPI and SPI, allowing easy connection to the majority of microcontrollers and DSPs without glue logic. A SAR ADC is a successive-approximation architecture that converts an analog input to a digital code through a binary-search algorithm using an internal DAC and comparator, achieving an excellent balance of speed, accuracy and power efficiency. SAR ADCs sit within the broader category of data converters (ADC/DAC) and are widely preferred for multiplexed channel acquisition, motor control feedback loops, and precision instrumentation where low latency and deterministic sampling are required. The AD7475 family (AD7475/AD7495) occupies the lower-power, high-speed segment of the SAR market, targeting portable, industrial and process-control designs. Key specifications include 12-bit resolution with no missing codes, 1 MSPS throughput, 4.5 mW typical power dissipation at 1 MSPS with 3V supply (10.5 mW at 5V), and a flexible VDRIVE function that sets the serial-interface logic level independently of the analog supply. The high-bandwidth track-and-hold amplifier handles input frequencies well above the Nyquist limit, supporting undersampling and accurate acquisition of fast transients. The serial interface can be configured for 3-wire or 4-wire SPI/MICROWIRE/QSPI/DSP operation, simplifying integration across a broad range of host platforms. Typical applications include battery-powered instrumentation, data acquisition systems, motor control feedback, portable medical devices and industrial process control. The wide 2.7V to 5.25V supply range and low power dissipation make the AD7475ARM-REEL7 particularly attractive for remote, battery-powered sensor nodes where energy budget is critical. When designing with the AD7475, provide a low-impedance external reference (such as the AD780 or ADR02) for full 12-bit performance, and keep digital and analog ground returns separated with a single-point join to preserve noise immunity.
AD7475BRMZ-REEL - 12-Bit 1MSPS SAR ADC | Analog Devices
The Analog Devices AD7475BRMZ-REEL is a 12-bit, high-speed, low-power successive-approximation analog-to-digital converter (SAR ADC) that operates from a single 2.7 V to 5.25 V supply and delivers throughput rates up to 1 MSPS. Packaged in an 8-pin MSOP (RM-8) and supplied on a 7-inch reel, it integrates a low-noise, wide-bandwidth track-and-hold amplifier capable of handling input frequencies in excess of 1 MHz. The external 2.5 V reference applied at REF IN, combined with the on-chip serial interface, makes it well suited for compact mixed-signal designs. A SAR (Successive Approximation Register) ADC is a precision converter architecture that uses a binary-search algorithm against an internal DAC to digitize the input voltage in N clock cycles. SAR ADCs sit in the broader taxonomy of analog-to-digital converters -> data converters -> mixed-signal ICs -> signal chain semiconductors, and they are favoured over pipeline or flash ADCs where low latency, deterministic sampling, and low power consumption are required at moderate resolutions (8 to 16 bits). Key features include a 1 MSPS conversion rate, 4.5 mW typical power dissipation at full speed, a flexible serial (SPI/QSPI/MICROWIRE/DSP-compatible) interface, and the proprietary VDRIVE function that allows the digital I/O logic levels to be set independently of the analog supply. The device offers a typical INL of ±1 LSB and operates across the industrial -40C to +85C temperature range, ensuring stable performance in harsh environments. From an architectural standpoint, the AD7475 uses a charge-redistribution DAC array combined with a high-bandwidth sample-and-hold capable of digitizing signals well beyond the Nyquist frequency. The serial clock can be applied up to 20 MHz, supporting the full 1 MSPS throughput while keeping the digital interface noise isolated from the analog input stage, an essential consideration for high-precision measurement systems. Typical applications include battery-powered instrumentation, portable data acquisition systems, optical sensor front-ends, isolated industrial process controls, and precision medical instruments such as patient monitoring devices. Designers also deploy it in motor control feedback loops and programmable logic controller (PLC) analog input modules where deterministic latency and low power are equally important. When designing with this device, ensure the reference decoupling capacitor is placed as close as possible to the REF IN pin and use a clean, low-noise analog ground pour to preserve 12-bit accuracy. The VDRIVE pin should be tied to the host MCU's logic supply to guarantee proper SPI timing margins at full 1 MSPS throughput. This page synthesizes distributor pricing, drop-in compatible replacements, and practical PCB layout notes that extend beyond the manufacturer datasheet, giving engineers a single authoritative reference for the AD7475BRMZ-REEL.
AD7476AAKSZ-REEL - 12-bit 1MSPS SAR ADC SC-70 | ADI
The Analog Devices AD7476AAKSZ-REEL is a 12-bit, 1 MSPS successive-approximation register (SAR) analog-to-digital converter (ADC) housed in a 6-lead SC-70 package. It operates from a single 2.35 V to 5.25 V power supply, consumes low power, and provides one analog input channel with a throughput rate up to 1 MSPS. An ADC is a data converter that transforms a continuous analog voltage into a discrete digital code. SAR (Successive Approximation Register) ADCs use a binary-search algorithm combined with an internal DAC to resolve each conversion in a fixed number of clock cycles, balancing speed, accuracy, and power efficiency. Within the converter hierarchy, this places the AD7476A in the precision, low-power, successive-approximation sub-family, well-suited for battery-powered and space-constrained instrumentation. Key features of the AD7476A include 12-bit resolution, 1 MSPS throughput, a wide 2.35 V to 5.25 V single-supply input range, low power consumption, and a small 6-lead SC-70 outline. The -REEL suffix denotes tape-and-reel packaging for high-speed pick-and-place assembly. The part shares pinout with the 10-bit AD7477A and 8-bit AD7478A, allowing designers to migrate resolution by simply changing the device. Typical applications include portable and battery-powered systems, instrumentation, data acquisition front-ends, optical sensor front-ends, and general-purpose analog monitoring in industrial, medical, and consumer designs. The SC-70 footprint makes it attractive where PCB real estate is at a premium. When designing with this device, provide adequate decoupling near the supply pin and ensure the analog input is bandwidth-limited to avoid aliasing. The wide supply range simplifies integration into both 3.3 V and 5 V systems. This page synthesizes distributor pricing, verified pin-compatible alternatives, and practical design notes curated for engineers — beyond what is found in the manufacturer datasheet.
AD7476ABKSZ-REEL - 12-Bit 1 MSPS SAR ADC, SC-70-6 | Analog Devices
The Analog Devices AD7476ABKSZ-REEL is a 12-bit, 1 MSPS successive-approximation register (SAR) analog-to-digital converter housed in a 6-lead SC-70-6 package. It operates from a single 2.35 V to 5.25 V power supply, features a single-ended analog input, and is rated over the -40C to +85C industrial temperature range. The part pairs a 12-bit resolution with throughput up to 1 million samples per second, making it one of the smallest form-factor high-speed ADCs in the ADI portfolio. An SAR ADC is a type of data converter that uses a successive-approximation register and an internal track-and-hold to digitize an analog input in a fixed number of clock cycles (typically one per N-bit cycle). As a sub-family of Nyquist-rate data converters, SAR ADCs sit between sigma-delta converters (higher resolution, lower speed) and flash ADCs (highest speed, lowest resolution) within the ADC taxonomy. ADCs are integrated circuits that bridge real-world analog signals to digital processors and microcontrollers across the broader mixed-signal and data-acquisition IC hierarchy. Key features include very low power consumption, a high-speed SPI/QSPI/MICROWIRE-compatible serial interface, and an automatic power-down between conversions that drops current draw dramatically when the part idles between samples. The 6-lead SC-70 footprint makes it one of the smallest 1 MSPS ADCs available, enabling analog front-end placement next to sensors on space-constrained PCBAs. The device uses a charge redistribution DAC architecture with an internal reference and a high-bandwidth input track-and-hold to deliver 12-bit linearity across the full input common-mode range. Because conversion is deterministic in time (no pipeline latency), the AD7476A is well suited to event-triggered sampling, multiplexed-channel sequencing, and motor-control feedback loops where deterministic group delay is required. Typical applications include battery-powered portable instrumentation, hand-held multimeters and data loggers, transducer signal conditioning chains, isolated industrial sensors, optical-module monitoring, and general-purpose embedded analog front ends. Designers select this part specifically when PCB area, single-rail operation, and deterministic conversion latency are more important than the very highest absolute sampling rates. When laying out a board, place the 0.1uF supply-decoupling capacitor as close as possible to the VDD pin, keep analog and digital grounds separated with a single-point stitch near the IC, and route the SCK, SDATA, and /CS digital traces away from the analog input net. Always drive /CS low before SCK edges and observe the tCONVERT timing budget for accurate 1 MSPS operation. This page synthesizes ADI distributor pricing, drop-in alternatives, and SC-70 layout/design notes that go beyond the bare datasheet to give you a faster procurement and bring-up decision.
AD7476ARTZ-REEL - 12-Bit 1MSPS SAR ADC SOT-23-6 | ADI
The Analog Devices AD7476ARTZ-REEL is a 12-bit, 1 MSPS successive-approximation-register (SAR) analog-to-digital converter in a 6-lead SOT-23 package, delivering high-speed acquisition in the industry's smallest footprint for its performance class. It operates from a single 2.35 V to 5.25 V supply, draws only 3.6 mW typical at 1 MSPS with a 3 V supply, and integrates a low-noise wide-bandwidth track-and-hold amplifier capable of handling input frequencies beyond 6 MHz with 70 dB SNR at 100 kHz input. A SAR ADC is a successive-approximation-register analog-to-digital converter that uses a binary-search algorithm against an internal DAC to convert an analog input to a digital code in N clock cycles for N-bit resolution. In the broader signal-chain taxonomy, SAR ADCs sit between flash converters (fastest, lowest resolution) and sigma-delta ADCs (slowest, highest resolution), making them the optimal choice when an application needs single-cycle latency, moderate-to-high speed, and 8-16 bit resolution. The AD7476 belongs to the data-converter hierarchy: ADC -> SAR ADC -> 12-bit ADC -> low-power precision ADC, and is widely used as a system-side companion to microcontroller ADCs when higher speed or accuracy is required. Key features include flexible power/serial-clock-speed management that scales consumption with throughput, a high-speed serial interface compatible with SPI/QSPI/MICROWIRE/DSP, pseudo-differential analog input referenced to GND, and an operating temperature range of -40C to +85C. The 1 MSPS throughput makes the part suitable for multiplexed multi-channel systems where channels are scanned in sequence. Typical applications include portable and battery-powered instrumentation, industrial process control loops, optical module monitoring, motor-control current sensing, and data-acquisition front-ends. Designers benefit from the part's small SOT-23-6 footprint when board real estate is constrained, and from its 3.6 mW dissipation when thermal or battery budgets are tight. When designing with this ADC, budget for at least 3 acquisition-clock cycles before conversion starts to settle the track-and-hold fully, and place the 0.1 uF decoupling capacitor as close as possible to the VDD pin to preserve SNR. Average supply current scales linearly with throughput, so the part is equally well-suited to high-speed burst sampling and continuous low-rate conversion. This page synthesizes distributor stock, parametric drop-in alternatives, and practical SOT-23 layout guidance beyond the manufacturer datasheet.
AD7476BRTZ-REEL - 12-bit 1MSPS SAR ADC | Analog Devices
The Analog Devices AD7476BRTZ-REEL is a 12-bit, 1 MSPS, successive-approximation analog-to-digital converter (SAR ADC) housed in a 6-pin SOT-23 (RT) package. It operates from a single 2.35 V to 5.25 V supply, draws a low supply current, and features a wide-bandwidth track-and-hold front end capable of handling input frequencies above 6 MHz. A successive-approximation ADC is a type of data converter that resolves the input voltage one bit per clock cycle against an internal precision DAC, producing a deterministic, low-latency conversion with no pipeline delay. SAR ADCs sit within the broader hierarchy of analog-to-digital converter -> data converter -> mixed-signal IC -> semiconductor, and are favored where low latency, small package size, and ease of use matter more than the very highest conversion rates. The AD7476 family (AD7476/AD7477/AD7478) shares this architecture at 12-, 10-, and 8-bit resolutions respectively. Key specifications include 1 MSPS throughput, 12-bit resolution with no missing codes, a wide input bandwidth exceeding 6 MHz, and an on-chip low-noise track-and-hold amplifier. The part integrates a high-speed serial interface (SPI/QSPI/MICROWIRE-compatible), consumes low power at full speed, and offers flexible input ranges supporting both unipolar and bipolar operation when driven through an appropriate driver or reference. Architecturally, the AD7476 uses a charge-redistribution capacitive DAC core with internal auto-calibration, which provides excellent DC accuracy and low integral nonlinearity across temperature. Its serial interface saves board area and simplifies isolation compared to parallel-output converters of similar speed. Typical applications include portable instrumentation, data acquisition systems, battery-powered equipment, isolated industrial front ends, and precision sensor signal chains. The tiny SOT-23-6 footprint and 1 MSPS rate make it well-suited for compact, low-power designs that still require good DC accuracy. When designing with this part, place the supply decoupling capacitor (typically 100 nF) within 5 mm of the AVDD pin and keep digital traces away from the analog input. For best linearity, drive the input with a low-impedance op-amp buffer rather than a high-impedance source. This page synthesizes distributor pricing, drop-in SOT-23-6 alternatives, and practical design notes not consolidated on the manufacturer datasheet alone.
AD7477ARTZ-REEL - 10-Bit 1MSPS SAR ADC SOT-23-6 | Analog Devices
The Analog Devices AD7477ARTZ-REEL is a 10-bit, 1 MSPS successive-approximation-register (SAR) analog-to-digital converter in a 6-lead SOT-23 package. The part operates from a single 2.35 V to 5.25 V power supply and features one analog input channel with a serial SPI/QSPI/MICROWIRE/DSP-compatible data interface. Its throughput rate of up to 1 MSPS makes it one of the fastest ADCs available in a SOT-23-6 footprint. A SAR ADC is a successive-approximation-register converter that uses a binary-search algorithm and an internal capacitive DAC to convert an analog input into a digital codeword. Within the data-converter hierarchy, SAR ADCs sit between flash converters (faster, lower resolution, higher power) and sigma-delta ADCs (slower, higher resolution, excellent noise). They occupy the niche where moderate-to-high speed, low latency, and low power consumption are required without the latency penalty of oversampling converters. Key features of the AD7477ARTZ-REEL include 70 dB SNR at 100 kHz input, wide input bandwidth, low power at 1 MSPS with both 3 V and 5 V supplies, and a small SOT-23-6 footprint that enables dense PCB layouts. The wide supply range lets a single device operate across 3.3 V and 5 V system rails, simplifying multi-rail designs and reducing inventory variants. The internal architecture combines an input sampling network, a precision comparator, a successive-approximation register with a 10-bit DAC, and a serial output engine. The 70 dB SNR translates to roughly 11.3 effective bits at full speed, sufficient for industrial monitoring, motor-control feedback loops, and instrumentation front-ends where 10-bit absolute accuracy is required. Typical applications include battery-management systems, portable instrumentation, data acquisition front-ends, optical-module monitoring, and general-purpose embedded analog signal conditioning. The small package makes it well suited to space-constrained designs such as handheld test equipment and IoT sensor nodes. When designing with the AD7477ARTZ-REEL, observe proper analog-input driving and decoupling: use a low-impedance buffer or RC network at AIN, and place 100 nF bypass capacitors as close to VDD and GND as possible to preserve SNR at full 1 MSPS throughput. This page consolidates manufacturer specifications, distributor pricing as of 2026-10-12, drop-in alternatives, and practical design notes drawn from the Analog Devices datasheet family to support fast, accurate component selection.
AD7477SRTZ-REEL - 10-Bit 1MSPS SAR ADC | Analog Devices
The Analog Devices AD7477SRTZ-REEL is a 10-bit, high-speed, low-power successive approximation register (SAR) analog-to-digital converter with a 1 MSPS sampling rate in a 6-pin SOT-23 (RT) package. It operates from a single 2.35 V to 5.25 V supply, drawing only 4 mA typical at 1 MSPS with VDD = 3 V, and provides a versatile SPI/QSPI/MICROWIRE/DSP-compatible serial interface. A SAR ADC is a type of data converter that uses a binary-search successive-approximation algorithm to digitize an analog input one bit at a time within a single clock cycle per bit. SAR ADCs occupy the middle ground between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, lower speed). They are widely used in industrial, instrumentation, and motor-control applications where deterministic latency, low latency-to-sample delay, and moderate-to-high sampling rates are required without the cost of higher-end delta-sigma parts. The AD7477 family sits in the precision Analog Devices portfolio alongside its 8-bit (AD7478) and 12-bit (AD7476) siblings. Key features of the AD7477SRTZ-REEL include throughput up to 1 MSPS, an analog input range of 0 V to VDD, true bipolar input capability with a resistor network, an on-chip track-and-hold amplifier, and a high-speed serial interface. The device includes an on-chip reference input (REF) and a low-noise, wide-bandwidth track-and-hold capable of handling input frequencies well above the Nyquist limit. Power-down current is typically 1 µA, making the part suitable for battery-powered and portable designs. Architecturally, the AD7477 uses a charge-redistribution DAC array controlled by a SAR logic core. The analog input is sampled on an internal capacitor array, then compared against binary-weighted capacitors in successive approximation cycles, yielding 10 bits in 10 conversion cycles. The serial output appears MSB-first on SDOUT, clocked by SCLK. The compact SOT-23-6 footprint measures only 2.9 mm × 1.6 mm and offers an exposed pad for thermal dissipation and reduced ground inductance. Typical applications include industrial process control, portable data acquisition, battery-powered instruments, motor control feedback, and transducer interfacing. The wide 2.35 V – 5.25 V supply range allows direct interfacing to 3.3 V and 5 V microcontrollers, while the SPI-compatible serial interface ensures easy connection to DSPs and microcontrollers without glue logic. When designing with the AD7477, ensure the reference voltage source has low impedance at the REF pin - a 10 µF decoupling capacitor close to the pin is recommended. Keep analog input traces short and away from digital switching signals to minimize crosstalk, and place a small RC anti-aliasing filter at AIN when sampling broadband signals. This page synthesizes distributor pricing, drop-in alternatives, application circuits, and practical PCB layout guidance not found in the manufacturer datasheet alone, optimized for design engineers and procurement specialists.
AD7478AAKSZ-REEL - 8-Bit 1MSPS SAR ADC, SC-70-6 | Analog Devices
The Analog Devices AD7478AAKSZ-REEL is an 8-bit, 1 MSPS successive-approximation register (SAR) analog-to-digital converter housed in a 6-lead SC-70 (KS) package and shipped on 10,000-unit reels. It operates from a single 2.35 V to 5.25 V supply, consumes low power at full throughput, and provides 1 input channel with serial SPI/DSP-compatible interface. The device is part of the AD7476A/AD7477A/AD7478A family, where resolution defines the part number (12-/10-/8-bit respectively). An SAR ADC is a type of analog-to-digital converter that uses a successive-approximation register and an internal capacitive DAC to convert an analog input to a digital code. SAR ADCs offer deterministic latency, no pipeline delay, and excellent dynamic performance for medium-speed applications. In the broader taxonomy, ADCs are classified by architecture: SAR, sigma-delta, pipeline, and flash; SAR converters sit in the middle of the speed-vs-resolution trade-off, making them ideal for multiplexed data acquisition, motor control, and portable instrumentation. Key features include a 1 MSPS throughput rate at full speed, low power consumption at both 3 V and 5 V supplies, wide input bandwidth, 71 dB SNR at 100 kHz input frequency, and a small SC-70-6 footprint suitable for space-constrained designs. The integrated sample-and-hold supports single-ended analog inputs from 0 V to VDD. The AD7478A uses a charge-redistribution SAR architecture with an internal clock, providing a compact solution that requires no external reference (it uses VDD as the reference by default) and only a minimal number of passive components. The serial interface is compatible with standard SPI, QSPI, MICROWIRE, and DSP serial ports, simplifying connections to modern microcontrollers and DSPs. Typical applications include battery-powered portable instruments, isolated data acquisition, multi-channel multiplexed systems, optical module monitoring, and general-purpose analog signal digitisation. The wide supply range and low power consumption make it well-suited for IoT edge nodes and 3.3 V microcontroller-based designs. When designing with this device, keep analog and digital grounds separated and connect them at a single point near the ADC to minimise digital noise coupling into the conversion result. Place the decoupling capacitor as close as possible to the VDD pin and ensure the input signal source can drive the ADC's sample-and-hold capacitor without degrading THD. This page synthesizes distributor pricing, drop-in alternatives from the AD7476A/AD7477A/AD7478A family, and practical design notes not found in the standalone manufacturer datasheet, helping engineers compare and source the right 8-bit SAR ADC for their application.