ADC/DAC
Products (2398)
TSA7887BRZ - 12-bit 125kSPS 2-Ch SAR ADC | Silicon Labs
The Silicon Labs TSA7887BRZ is a 12-bit, 125 kSPS, 2-channel successive-approximation-register (SAR) analog-to-digital converter with an integrated 2.5 V internal reference, housed in an 8-pin SOIC package. It operates from a single 2.7 V to 5.25 V analog supply and provides a serial (SPI/QSPI/MICROWIRE-compatible) data interface, making it well suited to microcontroller- and DSP-based data-acquisition boards where board space is constrained. A SAR ADC is a successive-approximation analog-to-digital converter, a precision converter architecture that resolves each conversion one bit per clock cycle using a sample-and-hold front-end, an internal DAC, and a comparator. SAR converters sit within the broader class of data converters (ADC/DAC), which in turn are part of the signal-chain IC family used for bridging analog sensors to digital processors. Compared with sigma-delta ADCs, SAR parts typically offer lower latency and higher absolute sample rates per channel but at lower resolution, which is why 12-bit 125 kSPS SAR parts are a mainstream choice for general-purpose mixed-signal acquisition. Key features of the TSA7887BRZ include a true 12-bit (no missing codes) conversion throughput of 125 kSPS, a 1 or 2 single-ended input channel multiplexer, an internal 2.5 V reference with low drift, a wide 2.7 V to 5.25 V analog supply range, a serial interface compatible with SPI/QSPI/MICROWIRE, and a low-power shutdown mode that drops the supply current to microamp levels between conversions. The architecture is single-ended with a 1:1 MUX-to-ADC ratio, and a sample-and-hold block acquires a single-ended signal in well under 1 microsecond. Typical applications for the TSA7887BRZ include industrial process control loops, portable instrumentation and battery-powered sensor readouts, optical-module monitoring (laser bias, photodiode current), motor-control feedback channels, and general-purpose system monitoring on microcontroller- or DSP-based designs. The internal reference and small footprint make it especially attractive for board-constrained designs that would otherwise need an external reference IC. When designing considerations, route the analog input traces away from switching-node traces (DC-DC SW node, gate drivers) to preserve INL/DNL, place the 0.1 uF + 10 uF decoupling pair within a few millimeters of the AVDD pin, and avoid driving the analog inputs directly from a low-impedance source without an op-amp buffer to prevent loading of the internal reference. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found on the manufacturer product page, giving engineers a single decision-ready reference.
TSA7887BRZ-REEL - 12-Bit 125kSPS 2-CH SAR ADC | Silicon Labs
The Silicon Labs TSA7887BRZ-REEL is a micropower, 2-channel, 125-kilosamples-per-second (kSPS), 12-bit successive-approximation-register (SAR) analog-to-digital converter (ADC) with a serial output interface, supplied in an 8-pin SOIC (R-8/SOIC-8) package on tape-and-reel packaging. It operates from a single 2.7 V to 5.25 V supply and integrates a wide-bandwidth track-and-hold, an internal +2.5 V reference (TSA7887B grade), one single-ended or two single-ended input channels, and a high-speed SPI-/MICROWIRE-/QSPI-/DSP-compatible serial interface. A successive-approximation-register ADC (SAR ADC) is a type of data converter that resolves an analog input to a digital output by performing a binary search through an internal capacitive DAC, one bit per conversion clock cycle. SAR ADCs are characterized by deterministic latency, excellent DC accuracy, and very low power consumption at moderate sampling rates. Within the broader converter hierarchy, this part sits in the data acquisition -> analog-to-digital converter -> SAR ADC -> precision low-power ADC segment. Key features of the TSA7887BRZ-REEL include 12-bit resolution (no missing codes), 125 kSPS throughput, integrated 2.5 V reference, single-supply 2.7 V to 5.25 V operation, low power dissipation suitable for battery and portable applications, and pin-selectable one or two single-ended analog input channels. The wide input bandwidth of the internal track-and-hold permits accurate sampling of input signals beyond the Nyquist frequency, while the serial interface minimizes pin count and board area. Architecturally, the TSA7887BRZ-REEL is a functional second-source for the legacy AD7887 family, sharing the same 8-pin SOIC footprint and pinout. The internal reference (2.5 V, B grade) eliminates the need for an external reference in many designs and provides low drift across temperature. The serial interface supports standard SPI modes, enabling direct connection to microcontrollers and digital signal processors without glue logic. Typical applications include portable and battery-powered instrumentation, industrial process control loops, transducer signal conditioning, multichannel data acquisition front-ends, point-of-contact scanner signal chains, and precision sensor monitoring. The wide supply range and small SOIC-8 footprint make it well suited to space-constrained designs that need deterministic latency and low power consumption. When designing with this part, place the 0.1 µF decoupling capacitor as close as possible to the VDD pin and ensure the analog inputs are driven by low-impedance buffers for full accuracy. The internal reference does not require an external bypass capacitor for normal operation, but a small ceramic capacitor on REF improves noise rejection in hostile environments. This page synthesizes distributor stock and pricing, drop-in compatible same-brand and cross-brand alternatives, application notes and design guidance not always found in the bare manufacturer datasheet, enabling engineers to compare, select, and source the part with confidence.
TSM1285BCSA+ - 12-Bit 300ksps SAR ADC | Silicon Labs
The Silicon Labs TSM1285BCSA+ is a 12-bit, 300 ksps, single-supply, low-power successive-approximation analog-to-digital converter (ADC) housed in an 8-pin SOIC package. It integrates an internal 2.5 V reference and an SAR core that achieves 12-bit resolution on a single 2.7 V to 3.6 V analog/digital supply. The device is specified across the commercial temperature range -40C to +85C and is sourced from the legacy Touchstone Semiconductor line now carried under the Silicon Labs brand. An SAR (Successive Approximation Register) ADC is a type of data converter that uses a binary-search algorithm against an internal DAC to digitize an analog input in N conversion clock cycles. SAR ADCs sit in the data converter hierarchy between flash converters (fast, expensive, low resolution) and sigma-delta converters (high resolution, slow, dense digital filtering). Because SAR ADCs require no continuous-time oversampling, they are well suited to multiplexed multi-channel acquisition systems, instrumentation loops, and embedded sensor readouts where deterministic latency matters more than extreme dynamic range. Key features include 300 ksps sampling rate, single 2.7 V to 3.6 V supply operation, internal 2.5 V reference, low power consumption, and a serial interface. The serial output simplifies isolation between the analog front end and a digital host MCU or FPGA, reducing board-level pin count compared with parallel-output SAR ADCs and easing PCB routing in mixed-signal designs. The TSM1285BCSA+ uses a charge-redistribution SAR architecture with an internal reference, internal offset calibration, and internal reference-error nulling per the manufacturer datasheet. After full-scale calibration, relative accuracy is specified against the theoretical code transfer function, supporting reliable closed-loop control and instrumentation applications where absolute transfer linearity matters. Typical applications include portable data acquisition systems, industrial process control loops, isolated sensor front ends, motor control current/voltage sense channels, and battery-powered instrumentation. The 2nd-source SOIC-8 footprint and commercial-grade temperature rating make it a flexible part for cost-sensitive mixed-signal designs. When designing with this ADC, ensure the analog input bandwidth does not exceed the device's -3 dB front-end limit; place a small RC anti-alias filter ahead of AIN. Decouple VDD with both bulk and 100 nF ceramic capacitance placed within 5 mm of the supply pin. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, enabling faster part-selection decisions.
TSM1285BCSA+T - 12-Bit 300ksps SAR ADC w/ 2.5V Ref | Silicon Labs
The Silicon Labs TSM1285BCSA+T is a 12-bit, 300 ksps successive-approximation analog-to-digital converter (SAR ADC) with an internal +2.5 V reference, integrated track-and-hold, and a high-speed serial digital interface, packaged in an 8-pin SOIC (0.154 inch / 3.90 mm body width). It operates from a single +2.7 V to +3.6 V supply and draws less than 2.5 mA at full 300 ksps throughput. The device accepts single-ended analog inputs in the 0 V to VREF range, where VREF can be the internal 2.5 V source or an external reference up to AVDD. A SAR ADC is a precision data-acquisition converter that uses a binary search algorithm and an internal capacitive DAC to compare the sampled input against a reference voltage. It is a sub-category of analog-to-digital converters (ADC), itself a subclass of data-converter ICs within mixed-signal semiconductor devices. SAR ADCs are valued for their deterministic latency (no pipeline delay), low power consumption, and excellent DC accuracy, making them the standard choice for multiplexed data-acquisition systems, instrumentation, and sensor signal chains. Key features include ±1 LSB INL (max) typical linearity, an internal track-and-hold capable of handling input bandwidths up to several MHz, a low conversion-mode power dissipation below 2.5 mA, and a power-down mode that drops quiescent current to microamp levels for battery-powered designs. The serial interface is SPI-/QSPI-/MICROWIRE-compatible, allowing direct connection to most microcontrollers and DSPs without glue logic. Architecturally, the TSM1285BCSA+T combines a high-bandwidth track-and-hold, a charge-redistribution SAR core clocked from an internal oscillator, a low-drift buried-Zener reference (trimmed to ±2%), and a low-noise input buffer. The integrated reference removes a common BOM line, saving PCB area and lowering system cost in precision designs. Typical applications include portable instrumentation and data loggers, pen-digitizers and tablet input systems, loop-powered 4-20 mA sensor digitizers, factory-automation sensor front ends, and battery-monitoring modules for portable equipment. Designers should note that the SHDN pin must be driven logic-high for normal conversion and pulled logic-low for power-down. The internal reference output (REF) requires a 2.2 µF minimum bypass capacitor; values lower than this degrade linearity. Input signals must remain within 0 V to VREF to avoid saturation. This page synthesizes distributor pricing, pin-compatible drop-in alternatives including the Maxim MAX1285BCSA family, and practical design notes that are not consolidated in the manufacturer datasheet, supporting faster component evaluation.
TSM1285BESA+ - 12-Bit 300ksps SAR ADC | Silicon Labs SOIC-8
The Silicon Labs TSM1285BESA+ (originally Touchstone Semiconductor) is a 12-bit, 300 ksps successive-approximation analog-to-digital converter in an 8-pin SOIC package, featuring an internal 2.5 V reference and a serial SPI/QSPI/MICROWIRE-compatible interface. The single-channel, single-ended input converter targets low-power, single-supply data-acquisition applications, including industrial instrumentation, process control, and portable sensor readout. The SAR (Successive Approximation Register) architecture is a class of ADC that performs bit-by-bit comparison using an internal DAC and a comparator, achieving deterministic conversion latency and excellent DC accuracy at moderate sampling rates compared with delta-sigma (which trades speed for higher oversampling resolution) or pipeline ADCs (which need higher clock speeds and consume more power). The 12-bit SAR sits in the data-converter hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor, and it is commonly used as the analog front-end between sensors or analog signal conditioning blocks and a microcontroller or DSP. Key features include 300 ksps maximum sampling rate, an internal 2.5 V reference (eliminating an external reference IC and saving PCB area), single 4.5 V to 5.5 V analog supply, low power dissipation suitable for battery and loop-powered systems, software-configurable unipolar/bipolar input range via the reference, and a flexible serial interface that supports SPI, QSPI, and MICROWIRE. The 8-SOIC surface-mount package keeps the part compact for high-density data-acquisition boards. The internal 2.5 V reference is trimmed during manufacture and provides the conversion full-scale; this removes one component from the BOM and simplifies factory calibration. The serial interface reduces pin count (no parallel data bus), enabling direct connection to microcontrollers and DSPs without glue logic, and the wide analog supply tolerance allows operation directly from a regulated 5 V rail or a low-dropout linear regulator output. Typical applications include industrial process control loops, weigh scales, panel meters, temperature and pressure sensor digitizers, portable medical instrumentation, and battery monitoring. The 12-bit resolution suits sensor linearization, threshold detection, and slow closed-loop control, while the 300 ksps rate handles audio-bandwidth and motor-control analog channels. When designing with this device, ensure the analog input does not exceed VDD; add a small RC anti-alias filter ahead of the input pin to limit noise above 150 kHz (half the Nyquist rate). Decouple VDD with a 10 uF tantalum plus 0.1 uF ceramic pair placed within 10 mm of the pin. This page synthesizes distributor pricing, drop-in cross-references (MAX1285BESA from Maxim Integrated is a pin-compatible functional twin in the same SOIC-8 footprint), and practical design notes not found in the manufacturer datasheet alone.
TSM1285BESA+T - 12-Bit 300ksps SAR ADC w/ Int Ref | Silicon Labs
The Silicon Labs TSM1285BESA+T is a 12-bit, 300 ksps successive-approximation analog-to-digital converter with an internal 2.5 V reference, offered in an 8-pin SOIC (SO) package. It provides one single-ended input channel, a serial (SPI/QSPI/MICROWIRE-compatible) interface, and operates from a single 2.7 V to 3.6 V analog and digital supply, drawing approximately 1 mA at full sampling rate. The integrated reference eliminates the need for an external precision reference, reducing BOM cost and board area in space-constrained designs. An SAR (Successive Approximation Register) ADC is a type of analog-to-digital converter that uses a binary-search algorithm against an internal or external reference to digitize an input voltage in N clock cycles, producing one sample per conversion with deterministic latency. ADCs sit within the broader data-acquisition signal chain (sensor -> front-end amplifier -> ADC -> microcontroller/DSP) and serve as the bridge between the analog physical world and digital signal processing. Low-power, single-supply 12-bit SAR ADCs like the TSM1285 are widely deployed in industrial sensors, instrumentation, and embedded monitoring. Key features include 12-bit resolution with no missing codes, a 300 ksps maximum sampling rate, an internal 2.5 V reference, a single-ended analog input, and an SPI-compatible serial output. The device delivers typical INL of +/-1 LSB and operates from -40C to +85C, making it suitable for industrial temperature environments. Low power consumption (~1 mA at 300 ksps) and a power-down mode that reduces current to nanoamp levels enable battery-powered and energy-harvesting applications. Architecturally, the TSM1285 uses a charge-redistribution SAR core with an integrated track-and-hold, a precision bandgap reference, and a serial output shift register. The internal reference is trimmed during manufacture, eliminating external trim components. The serial interface supports SPI, QSPI, and MICROWIRE modes, allowing direct connection to most microcontrollers without glue logic. Conversion is initiated via a chip-select falling edge and the result is clocked out on subsequent SCLK rising edges. Typical applications include industrial process control loop monitoring, portable battery-powered instrumentation, data-acquisition front-ends for sensor signals (temperature, pressure, strain), and embedded control systems. The internal reference simplifies designs that previously required an external reference plus a buffer amplifier. When designing with this part, place a 1 nF to 10 nF ceramic bypass capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor at the supply input. Maintain a quiet analog ground return path; do not share the analog ground return with noisy digital currents. The reference decoupling capacitor (typically 4.7 uF on REF) is critical for AC performance. This page synthesizes distributor pricing, drop-in alternatives (same-brand MAX1285 family first, then cross-brand equivalents), and practical design notes not consolidated in the manufacturer datasheet.
V62/09628-01XB - 10-Bit 8-Ch Low-Power Serial ADC | Maxim
The Maxim Integrated (Analog Devices) V62/09628-01XB is a 10-bit, 8-channel, low-power, serial-interface analog-to-digital converter (ADC) supplied in a 20-pin SSOP (Small Shrink Small Outline Package) with gull-wing leads, qualified to the MILITARY temperature grade. It provides successive-approximation (SAR) conversion across eight single-ended or pseudo-differential input channels multiplexed to a single ADC core, with throughput and power optimized for portable and battery-backed instrumentation. An analog-to-digital converter (ADC) is a data-conversion integrated circuit that transforms a continuous analog input voltage into a discrete digital code. Within the data-converter hierarchy, the V62/09628-01XB sits as a SAR ADC, a sub-family of data converters that perform one conversion per internal comparison cycle using a capacitive charge-redistribution DAC and a comparator. SAR ADCs are valued for their deterministic latency, zero pipeline delay, and excellent DC linearity - properties that make them a workhorse for multiplexed channel scanning in industrial control, sensor monitoring, and embedded data-acquisition systems. Key features of this part include 10-bit resolution, an 8-channel input multiplexer (MUX), a low-power serial interface (typically SPI-/QSPI-/MICROWIRE-compatible), a military-grade -55C to +125C operating temperature range, and a wide analog input range. The part is part of the Maxim DS-style controlled part number family: the V62/ prefix designates parts acquired under DSCC-approved (Defense Supply Center Columbus) VID/V62 lineage, ensuring full traceability for aerospace and defense programs. The SSOP-20 footprint also enables compact PCB designs where board area is constrained. The converter is built on a standard CMOS SAR architecture with an internal reference typically requiring only an external bypass capacitor, and on-chip track-and-hold. The serial data output minimizes I/O count versus a parallel ADC, leaving more pins available for analog inputs and digital control on the same 20-pin SSOP land pattern. Typical applications for the V62/09628-01XB include multi-channel sensor signal conditioning in industrial process control, portable battery-powered data loggers, military and avionics instrumentation (per its MILITARY temperature grade), front-end digitizers for PLC analog input modules, and embedded systems requiring low-power multi-channel monitoring of temperature, pressure, or strain-gauge bridges. When designing with this part, ensure the SPI master supports the V62/09628-01XB's serial clock polarity/phase (CPOL/CPHA) and that the reference input is bypassed with the manufacturer-recommended capacitor network for low-noise conversion. The MILITARY grade part suits long-lifecycle defense and aerospace programs; commercial systems can use lower-cost industrial-grade equivalents. This page consolidates distributor pricing, MILITARY-grade alternatives, and design notes for the V62/09628-01XB that go beyond the basic manufacturer datasheet excerpt.
VSP3200Y - 16-Bit 8MSPS CCD Signal Processor | TI
The Texas Instruments VSP3200Y is a 16-bit, 8 MSPS, 3-channel analog front end (AFE) CCD signal processor with dual output mode, housed in a 48-pin LQFP (7x7 mm) package and operating from a single +5V supply. A CCD/CIS analog front end is the mixed-signal stage between an image sensor and a digital image processor. It samples tiny charge-derived pixel voltages, removes reset and kTC noise through correlated double sampling (CDS), amplifies the signal to match the ADC input range, and digitizes it. Within the signal chain hierarchy, the AFE sits between the sensor and the image-signal processor, and is a critical determinant of final image dynamic range and noise floor. Key features include an integrated triple correlated double sampler (CDS), a programmable gain amplifier with up to +13 dB gain, selectable operating modes (1-channel or 3-channel CCD mode at up to 8 MSPS), selectable normal or demultiplexed output modes, and an offset control range of +3V. The 16-bit conversion resolution preserves fine shadow detail in scanned images, essential for document and film scanners. Architecturally, the VSP3200 combines three CDS/PGA channels feeding a 16-bit ADC pipeline optimized for line-rate scanning. The demultiplexed output mode makes the device interface compatible with the VSP3210, which is pin-to-pin compatible with the VSP3100 in that mode, providing a migration path to a one-chip solution. Typical applications include flatbed document scanners, film scanners, CIS-based scanner modules, and industrial inspection cameras that use CCD or CIS sensors. Design consideration: because the part runs from a single +5V rail, keep the analog 5V supply clean and well decoupled; noise on this rail directly appears in pixel data at 16-bit resolution levels. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
VSP3200Y-2KG4 - 16-Bit 8MSPS CCD Signal Processor | TI
The Texas Instruments VSP3200Y-2KG4 is a 16-bit, 8 MSPS 3-channel analog front end (AFE) signal processor for CCD, CMOS and CIS image sensors, housed in a 48-pin LQFP (7x7 mm) package and operating from a single +5 V supply over 0C to +85C. An analog front end for image sensors is a specialized data-conversion IC that sits between a charge-coupled device (CCD) sensor and the digital image pipeline. It performs correlated double sampling (CDS) to remove kTC and low-frequency noise, applies programmable gain, offsets the black level, and digitizes the conditioned pixel signal with a high-speed ADC, delivering a clean digital video stream to downstream DSP or image-processing logic. Key features of the VSP3200Y include three independent Correlated Double Samplers (CDS) and three Programmable Gain Amplifiers (PGAs) that process CCD signal channels end-to-end on one chip, a 16-bit ADC running at up to 8 MSPS, and dual output mode for flexible system interfacing. Integration of the complete analog chain eliminates discrete CDS/PGA stages, reducing board area and analog design risk. The device is built on CMOS process technology and provides a serial digital output interface. According to TI product documentation, the VSP3200Y is interface compatible with the VSP3210, a 16-bit one-chip product; the VSP3210 is in turn pin-to-pin compatible with the VSP3100 when operated in demultiplexed output mode, giving designers a documented upgrade and substitution path within the same LQFP-48 family. Typical applications include CCD camera signal chains for industrial inspection, consumer video capture, and contact image sensor (CIS) modules used in scanners and document imaging. The single 5 V supply suits legacy 5 V consumer and industrial boards. When designing with this part, verify power-supply decoupling on both the analog and digital domains and confirm the output mode (multiplexed vs dual) matches the pixel-rate timing of your CCD clocking scheme. This page synthesizes distributor availability, drop-in family alternatives (VSP3210, VSP3200Y, VSP3100), and design considerations not found on the manufacturer product page.
X9313UST1 - 50kΩ 32-Tap Digital Potentiometer SOIC-8 | Renesas
The Renesas X9313UST1 is a digitally controlled potentiometer (XDCP™) housed in an 8-pin SOIC package with a fixed end-to-end resistance of 50 kΩ and 32 resistive taps. It provides a single-channel, non-volatile, up/down wiper interface through three logic input pins (U/D, INC, CS) and stores the last wiper position through on-chip nonvolatile memory that retains setting across power cycles. The 32-tap resolution gives approximately 1.0% per-step resolution across the resistor array. Background context: a digital potentiometer (often abbreviated "digi-pot") is a solid-state, semiconductor replacement for a mechanical potentiometer or trim pot. Digi-pots sit within the broader data-acquisition and analog-signal-conditioning hierarchy, alongside DACs and digital rheostats, and they belong to the Renesas XDCP™ family. Unlike mechanical pots, they are programmable by host firmware, never wear from mechanical actuation, and ship in surface-mount packages suitable for reflow soldering and dense PCB layouts. Key features include a low 1 mA (typical) standby current, terminal voltages up to ±5 V across the resistor array, a 1.0% end-to-end resistance tolerance, and a wiper current rating up to approximately ±1 mA continuous, with peak surge handling to 10 mA. The 3-wire serial interface consumes only three MCU GPIO pins and is compatible with 5 V logic. The internal architecture pairs a polysilicon resistor array with CMOS wiper switches and a non-volatile memory cell that latches the last wiper position before power-down. Three control inputs (CS, INC, U/D) implement a step-and-direction interface: CS enables the chip, INC clocks each tap step, and U/D selects up or down direction. Power-on recall places the wiper on the stored value with deterministic behavior. Typical applications are audio volume/balance control, LCD contrast/brightness trimming, programmable voltage references, sensor calibration, and parameter-set storage where an MCU must hold a setting through power-down. Because the wiper retains state without external EEPROM, designers can eliminate a serial EEPROM and reduce BOM cost in many calibration circuits. When designing with the X9313UST1, respect the maximum terminal voltage (±5 V across the resistor terminals) and verify that pin 8 is correctly identified in PCB layout - the part is widely second-sourced and a small number of look-alike 8-pin digi-pots swap the GND and VL pin positions. Add a 0.1 µF decoupling capacitor close to the supply pin and confirm that CS is not allowed to float. This page combines the Renesas datasheet specifications, current distributor pricing, pin-compatible cross references, and practical layout notes not always covered in the original datasheet, providing engineers a single-page engineering brief for the X9313UST1.
XR4151CP-F - V/F Converter, 8-22V, 100kHz | MaxLinear
The MaxLinear XR4151CP-F is a monolithic voltage-to-frequency (V/F) and frequency-to-voltage (F/V) converter IC supplied in an 8-pin PDIP through-hole package. It accepts a single-ended analog input voltage of 0 to 10 V (or -10 V to 0 V with appropriate biasing) and produces a proportional output pulse train whose frequency is linearly related to the input amplitude. The maximum full-scale frequency is 100 kHz with a usable range of 1 Hz to 100 kHz and a typical linearity error of +/-0.05%. A voltage-to-frequency converter (V/F or VFC) is a mixed-signal building block that translates a continuous analog voltage into a stream of digital pulses whose repetition rate is precisely proportional to the input magnitude. VFCs sit within the broader hierarchy of analog-to-digital conversion techniques alongside successive-approximation ADCs, dual-slope integrating ADCs, and sigma-delta modulators, and are valued for their inherent monotonicity, excellent noise rejection, and galvanic isolation-friendly pulse output that can be transmitted through optocouplers or long cables. Key features of the XR4151CP-F include a supply voltage range of 8 V to 22 V, very high noise rejection, inherent monotonicity over the full dynamic range, a single open-collector output stage that can interface with CMOS/TTL logic, and the ability to operate in reverse as a frequency-to-voltage converter with a small number of external components. The -F suffix denotes the lead-free, RoHS-compliant version of the original XR4151CP, while both share the same die and pinout. The internal architecture consists of a precision current source, a high-gain operational amplifier, a comparator, and a one-shot timing network. The op-amp drives a current into an external RC network whose charging time determines output pulse width; this architecture eliminates the missing-pulse and non-monotonic errors that plague simple charge-pump VFCs. The dedicated low-leakage input protection on pin 7 prevents the inverting input from being driven below ground, eliminating the need for an external clamp diode in most applications. Typical applications include precision analog-to-digital conversion where the output is fed to a counter or microcontroller capture input, isolated analog signal transmission across 4-20 mA replacement links, motor speed control via frequency-to-voltage conversion of tachometer pulses, and long-integral analog signal conditioning in industrial weighing, temperature, and pressure transmitters. When designing with the XR4151CP-F, choose the external timing resistor and capacitor first - the resistor sets the input current range and full-scale frequency, while the capacitor sets the one-shot pulse width. Add a 0.01 uF bypass capacitor close to the supply pin and use low-leakage timing components to maintain the 0.05% linearity specification. This page synthesizes distributor pricing, lead-time, pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single-source decision framework for new designs and legacy XR4151CP replacement.
XRD8775AID-F - 8-Bit 20MSPS Flash ADC, 5V CMOS | MaxLinear
The MaxLinear (formerly Exar) XRD8775AID-F is an 8-bit, 20 MSPS analog-to-digital converter using a 2-step flash architecture in a 20-pin SOIC wide-body package. It operates from a single 5V supply, accepts analog inputs from 0V to VDD, supports a reference range of 1V to VDD, and integrates an internal sample-and-hold function that eliminates the need for an external track-and-hold amplifier. Typical power consumption is 75 mW (excluding reference current), enabling low-power system designs. An analog-to-digital converter (ADC) is a data converter that translates real-world continuous analog signals into discrete digital codes for processing by microcontrollers, FPGAs, or DSPs. Flash and 2-step flash ADCs achieve the highest sampling rates among all ADC architectures by using parallel comparator banks, making them well-suited for video, instrumentation, and high-speed control loops. The XRD8775AID-F belongs to the hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. Key specifications include 8-bit resolution, 20 MSPS sampling rate, parallel digital interface, single 5V analog supply, internal S/H, 0V-to-VDD analog input range, and -40C to +85C operating temperature. The wide-body 20-SOIC package (0.295 inch / 7.50 mm width) provides robust thermal performance and ease of hand-soldering for prototyping. The part is offered in tube packaging for manufacturing. The 2-step flash architecture trades a small number of comparator channels for a substantial reduction in die area and power consumption versus a full flash design, while still maintaining video-grade 20 MSPS throughput. Internal S/H bandwidth supports IF undersampling and video bandwidth applications. The CMOS process ensures low power, latch-up free operation, and stable performance across the industrial temperature range. Typical applications include video digitisation, CCD camera front ends, digital oscilloscopes, ultrasound front-end preprocessing, IF sampling in communications receivers, and industrial process control loops. The combination of wide analog input range and integrated S/H simplifies board-level design for low-channel-count high-speed data acquisition. When designing with this part, place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin and a bulk tantalum or electrolytic capacitor on the analog supply rail. The reference pin requires a low-impedance source; use an op-amp buffer or a dedicated reference IC if the application demands better than 8-bit absolute accuracy. This page synthesises distributor pricing, parametric drop-in alternatives from same-brand and cross-brand portfolios, and practical design notes that complement but do not duplicate the manufacturer datasheet.
XRD8775AIU - 8-Bit 20MSPS Flash ADC, 20-SSOP | MaxLinear
The MaxLinear (formerly Exar) XRD8775AIU is a monolithic CMOS 8-bit flash analog-to-digital converter delivering up to 20 MHz sampling rate in a 20-pin SSOP package. It integrates an internal sample-and-hold amplifier, operates from a single +5 V supply, and consumes only 75 mW typical (excluding external reference current). The input voltage range spans 0 V to VDD with a flexible reference voltage range of 1 V to VDD, allowing direct interface with single-supply analog signal chains. An 8-bit flash ADC is a parallel-architecture converter that uses 2^N-1 comparators to digitize an analog input in a single clock cycle, delivering the fastest conversion latency of any ADC topology at the cost of exponential die-area growth with resolution. Flash converters therefore dominate sub-10-bit, multi-MHz applications such as video digitizers, digital oscilloscope front ends, and radar IF samplers where latency and sampling rate, not resolution, are the primary constraints. Key specifications of the XRD8775AIU include 8-bit resolution, 20 MSPS maximum sampling rate, internal S/H, single +5 V supply operation, 75 mW typical power dissipation, latch-up-free CMOS construction, and 2000 V minimum ESD protection. The parallel data interface simplifies connection to FPGAs, ASICs, or microcontrollers without requiring a serial programming sequence. The 20-SSOP package suits space-constrained boards where analog and digital grounds can be partitioned for noise immunity. Architecturally, the device uses 255 parallel latched comparators feeding a priority encoder that generates an 8-bit thermometric code, then a binary encoder delivers the output word in a single clock edge. The internal sample-and-hold amplifier stabilizes the input within the aperture window, which is critical for full-scale inputs above 10 MHz to avoid code-edge distortion. The reference ladder is externally driven, giving the designer freedom to set the LSB size by scaling VREF between 1 V and VDD. Typical applications include digital oscilloscope input channels, video digitizers, CCD imaging front ends, radar IF sampling, ultrasound beamforming pre-processors, and industrial data-acquisition front ends. The 75 mW dissipation also suits portable test gear and battery-powered instrumentation where the internal S/H eliminates an external track-and-hold IC. Design tip: Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin and a bulk 10 uF tantalum capacitor near the analog ground island; route the 8-bit parallel bus with matched trace lengths to prevent sub-LSB timing skew at the full 20 MSPS rate. Also bypass the external VREF pin with 10 uF to keep the internal resistor ladder stable and reduce sparkle-code errors. This page synthesizes distributor pricing, verified drop-in 8-bit flash ADC alternatives, and practical PCB layout guidance that goes beyond the manufacturer datasheet, helping engineers shorten the BOM-sourcing and design-in cycle for this legacy flash converter.
XRD8775AIU-F - 8-Bit 20MSPS Parallel ADC | MaxLinear | Exar
The MaxLinear XRD8775AIU-F is an 8-bit resolution, 20MSPS sampling rate analog-to-digital converter (ADC) with a single-ended input and parallel digital data interface, housed in a 20-pin SSOP package. Originally introduced by Exar Corporation and now sold under MaxLinear, the part is specified as IC ADC 8BIT PAR 20MSPS 20SSOP and operates from a single 5V analog supply. An analog-to-digital converter (ADC) is a data-acquisition integrated circuit that samples continuous analog signals and converts them into discrete digital codes. Flash ADCs like the XRD8775AIU-F use an array of comparators to deliver the fastest conversion times, typically reserved for video, instrumentation, and high-speed control loops where sub-microsecond conversion latency is mandatory. The 8-bit, 20MSPS segment sits at the entry level of high-speed conversion and is well suited for digitizing video bandwidths, IF signals, and oversampled measurement channels. Key features per the manufacturer datasheet include 8-bit resolution, 20 MHz maximum sampling rate, an internal sample-and-hold (S/H) function, a single-ended analog input range of 0V to VDD, a reference input range of 1V to VDD, and typical power consumption of 75 mW (excluding reference current). The device provides latch-up free operation and ESD protection rated at 2000V minimum, simplifying board-level robustness. The XRD8775AIU-F uses a flash converter architecture with a 1:1 S/H-to-ADC ratio, providing a single simultaneous sampling channel with a parallel 8-bit output bus. This architecture removes the need for an external track-and-hold amplifier in most digitizer front ends and simplifies downstream FPGA or ASIC capture logic. Typical applications include standard-definition video digitizers, CCD/camera signal chains, ultrasound front-end signal conditioning, IF sampling for communications receivers, and high-speed industrial inspection systems. The 20MSPS capability comfortably handles component video and baseband IF signals up to about 7 MHz of input bandwidth. When designing with this part, ensure the analog input drive network presents low source impedance at the Nyquist frequency and that the reference pin is decoupled with a low-ESR capacitor placed within 5 mm of the package pin. Because the part is sourced via MaxLinear (after the Exar acquisition) and is listed as obsolete in some distributor databases, confirm long-term supply before committing to high-volume production.
XRD8785AID-F - 8-Bit 20MHz Flash ADC, 24-SOIC | MaxLinear
The MaxLinear (formerly Exar) XRD8785AID-F is an 8-bit, 20 MSPS flash analog-to-digital converter (ADC) with one input channel, housed in a 24-pin SOIC wide-body package. It uses an advanced 5V CMOS process and provides 8-bit resolution, up to 20 MHz sampling rate, an internal sample-and-hold function, and a single 5V analog supply. The device accepts an input range of 0V to VDD and a reference range of 1V to VDD, making it suitable for general-purpose digitizing of unipolar signals. Latch-up free operation and a minimum 2 kV ESD protection rating ensure robust real-world handling during board assembly and field use. An 8-bit flash ADC is the fastest ADC architecture, using 2^8 (256) parallel comparator-latch cells and a resistor reference ladder to convert an input voltage to a digital code in a single clock cycle. Flash ADCs occupy the low-resolution, very-high-speed corner of the converter family tree: SAR ADCs (successive approximation) offer higher resolution at lower speed, while pipelined ADCs sit between them. Flash ADCs therefore dominate in digital oscilloscopes, video digitizers, CCD imaging front-ends, radar IF sampling, and digital receiver IF strips where sub-100 ns latency matters more than 12-16 bit precision. Key features of the XRD8785AID-F include 5V single-supply operation, a typical power dissipation of 75 mW excluding the reference current, an internal S/H that removes the need for an external track-and-hold amplifier, and three-state CMOS-compatible digital outputs. Its flash topology delivers full-code conversion in a single clock, and the 24-SOIC package exposes all digital outputs and the S/H control pins for easy parallel interfacing to FPGAs, microcontrollers, or display controllers. Typical applications for the XRD8785AID-F include digital oscilloscope front-ends, video digitizers, CCD imaging signal chains, instrumentation digitizers, and communication IF sampling. The simple 5V/CMOS interface, parallel output bus, and low 75 mW dissipation also suit it for board-level prototyping where a fast acquisition path is needed without the cost of a precision ADC. When designing with this device, follow the datasheet's recommended decoupling and reference bypassing carefully. Place a 0.1 uF ceramic bypass close to the analog supply pin and a 10 uF bulk tantalum or ceramic capacitor nearby; bypass the reference pin with a low-impedance capacitor so the high-speed comparator ladder does not see reference bounce. For engineers evaluating the XRD8785AID-F, DigiKey, Mouser, and Octopart list it as an active MaxLinear SKU with multiple distributor stocks, while legacy Exar datasheet PDFs remain valid references. This page goes beyond the basic datasheet by consolidating distributor pricing tiers, cross-brand drop-in alternatives, and practical PCB/thermal layout notes.
XRD8785AIDTR-F - 8-Bit 20MSPS Flash ADC, 24-SOIC | MaxLinear
The MaxLinear XRD8785AIDTR-F is an 8-bit flash analog-to-digital converter (ADC) sampling at up to 20 MSPS with a single 5V supply, housed in a 24-pin wide-body SOIC package (0.295 inch / 7.50 mm body width) shipped on tape and reel. Key electrical parameters include 8-bit resolution, 20 MHz maximum sampling rate, one single-ended analog input, internal sample-and-hold (S/H), external or internal reference option, 0V-to-VDD analog input range, 1V-to-VDD reference range, 75 mW typical power consumption (excluding reference), and an operating temperature range of -40C to +85C. The suffix "D" indicates the 24-SOIC package, "T" indicates tape-and-reel packaging, and "R-F" denotes the MaxLinear / Exar part-numbering convention. A flash ADC is a type of analog-to-digital converter that uses a parallel bank of 2^n comparators to convert an analog signal to an n-bit digital code in a single clock cycle, achieving the highest sampling speed of any ADC architecture. The hierarchy is: ADC -> data converter -> data acquisition IC -> mixed-signal IC -> semiconductor. Flash converters excel in applications demanding low latency and wide input bandwidth, but they trade resolution and power efficiency against sampling speed. The XRD8785AIDTR-F occupies the entry-level 8-bit, 20 MSPS tier, which is the typical sweet spot for video digitisation, ultrasound receive beams, and intermediate-frequency (IF) sampling in low-cost communications receivers. Key features of this device include a parallel (TTL-compatible) digital output bus, internal S/H front-end, latch-up free CMOS construction, ESD protection on analog and digital pins, single 5V supply operation, and low power consumption at 75 mW typical. The 24-SOIC wide-body package measures approximately 15.4 mm x 7.5 mm x 2.35 mm, providing generous die-to-board clearance for through-hole or socketed prototypes. The device is built on a 5V CMOS process, providing low power consumption, latch-up immunity, and ESD protection. Internal reference mode simplifies bill-of-materials, while external reference mode lets designers optimise linearity or temperature drift for instrumentation-grade designs. Typical applications include video digitisation, digital oscilloscope front-ends, IF sampling in communications receivers, CCD/CMOS image sensor digitisation, and industrial control loop sampling. When designing with this device, ensure the analog input signal is bandwidth-limited to less than the Nyquist frequency (10 MHz for 20 MSPS) and that the external reference decoupling capacitor is placed within 5 mm of the REF pin to prevent kickback noise from corrupting the conversion. This page synthesises distributor stock, lifecycle risk, drop-in ADC alternatives, and practical design notes not found in the manufacturer datasheet.
XRD8799AIQ - 10-Bit 2MSPS 8-Ch ADC | MaxLinear/Exar | 44-PQFP
The MaxLinear XRD8799AIQ (originally Exar) is a 10-bit resolution, 2 MSPS pipelined analog-to-digital converter with an integrated 8-channel analog input multiplexer, housed in a 44-pin PQFP (10x10 mm) package. It combines low-power CMOS operation (35 mW typical active, 0.8 mW in power-down) with a wide input range spanning GND to VDD, eliminating the need for external signal-conditioning scaling on most signals. An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts continuous analog voltages into discrete digital codes at a defined sample rate. The XRD8799AIQ belongs to the multi-channel, low-power successive-approximation/pipelined ADC family - a category that sits inside the broader hierarchy of data converter -> data acquisition IC -> mixed-signal semiconductor. It is purpose-built for systems that must digitize multiple analog sources while staying within strict power and board-area budgets. Key differentiating specifications include 10-bit resolution, a 2 MHz maximum sampling rate, eight single-ended input channels routed through an on-chip mux, parallel digital output, and an input range that accepts rail-to-rail signals without external scaling. A built-in power-down mode drops consumption to 0.8 mW typical, and the device does not require an external sample-and-hold for analog signals below 100 kHz or for CCD-type signals, simplifying the analog front end and BOM cost. Architecturally, the converter uses a pipelined topology that distributes conversion work across multiple low-resolution stages, achieving higher throughput than pure SAR architectures at comparable power. The integrated 8-channel mux eliminates an external analog switch tree, reducing board space, leakage paths, and channel-to-channel crosstalk sources. The PQFP-44 package gives a generous thermal pad and 10 mm x 10 mm footprint suitable for both hand-solderable prototyping and SMT production. Typical applications include CCD signal acquisition in industrial imaging, multi-sensor data logging in process control, portable instrumentation with battery operation, and mixed-signal front ends for embedded controllers. Industrial multi-channel data-acquisition boards and portable medical monitoring devices frequently select this part for its combination of throughput and low quiescent draw. When designing with the XRD8799AIQ, note that input signals below 100 kHz do not need an external track-and-hold, but faster signals should be buffered to maintain dynamic performance. Place a 0.1 uF decoupling capacitor close to each supply pin and follow the manufacturer's reference ground layout to keep digital switching noise out of the analog path. This page synthesizes distributor pricing, pin-compatible alternatives, and practical layout notes not consolidated in the manufacturer datasheet.
XRD87L75AID-F - 8-Bit 10MSPS ADC | 20-SOIC | MaxLinear
The MaxLinear (formerly Exar) XRD87L75AID-F is a low-voltage CMOS 8-bit analog-to-digital converter with a maximum sampling rate of 10 MSPS, an internal sample-and-hold, and a single 3.3V supply rail. It is housed in a 20-pin SOIC (0.295 inch / 7.50 mm body width, D-suffix package) and is provided in tube packaging per the -F factory suffix. An 8-bit flash ADC is a type of analog-to-digital converter that uses a parallel bank of 2^n comparators to convert an input voltage into a digital code in a single clock cycle, achieving the fastest possible conversion latency at moderate resolution. Within the broader signal-chain taxonomy, the XRD87L75AID-F sits between a traditional sample-and-hold stage and a digital host (FPGA, ASIC, or microcontroller), and is a member of the speed-optimized, low-resolution ADC family used for video, instrumentation, and IF digitisation. Key features include 8-bit resolution, a 10 MHz typical sampling rate, an internal track-and-hold, an analog input range of 0V to VDD, a reference input range of 1V to VDD, and typical power dissipation of 25 mW (excluding reference current). The device is latch-up free, operates from a single 3.3V supply, and uses a parallel CMOS-compatible digital interface, which simplifies connection to modern MCUs and FPGAs without external level shifters. The device is built on an advanced 3.3V CMOS process and uses a flash architecture to deliver 10 MSPS conversion speeds. Its internal S/H function guarantees a stable sample window across rapidly-changing inputs and avoids the need for external S/H circuitry, simplifying the analog front-end. Typical applications include video digitisation, CCD imaging front-ends, digital oscilloscope front-ends, IF sampling in communications, portable instrumentation, and general-purpose high-speed data acquisition. The wide analog input range (0V to VDD) lets designers digitise single-ended signals without external attenuators. When designing with this device, ensure the analog input is properly driven (low-impedance buffer recommended) and that the reference decoupling is solid. The single 3.3V supply simplifies the power tree but requires that downstream digital logic be 3.3V tolerant. This page synthesises distributor pricing, drop-in alternatives (including the SSOP-packaged variant XRD87L75AIU-F), and practical design notes that complement the manufacturer datasheet.
XRD87L75AIP-F - 8-Bit 10MSPS ADC, 20-Pin PDIP | MaxLinear
The MaxLinear XRD87L75AIP-F is a low-voltage CMOS 8-bit high-speed analog-to-digital converter with a 10 MHz sampling rate, housed in a 20-pin PDIP through-hole package. It features a single 3.3 V supply rail, an internal sample-and-hold function, an analog input range of 0 V to VDD, and a reference input range of 1 V to VDD, achieving typical power dissipation of 25 mW excluding the external reference. What is an 8-bit ADC? An analog-to-digital converter (ADC) is a data converter that samples a continuous analog waveform and produces a discrete digital code proportional to the input voltage at each clock edge. 8-bit ADCs deliver 256 discrete codes (1 LSB = full-scale / 256), which suits digital instrumentation, video digitizing, and digital oscilloscope front ends where 8-bit dynamic range is sufficient. Within the data-converter hierarchy, an 8-bit ADC sits below SAR and pipelined converters in resolution but above flash converters in speed and below the latest 12-/14-/16-bit parts in accuracy. The 10 MSPS sampling rate places this part in the legacy high-speed, low-resolution tier used in CRT digitizers, image scanners, ultrasound receive channels, and digital IF processing. Key features include latch-up free CMOS construction, parallel digital output, single 3.3 V supply operation, internal S/H function, and a wide reference input voltage range from 1 V to VDD for design flexibility. The 2-step flash architecture minimizes comparator count while delivering 10 MSPS throughput, and the part is offered as a Pb-free (RoHS-compliant) 20-pin PDIP variant suitable for industrial, instrumentation, and test-equipment applications. The XRD87L75AIP-F integrates the input track-and-hold, reference buffer, and decoding logic on a single CMOS die, allowing direct connection to a microcontroller or DSP data bus. The 25 mW typical power consumption (excluding reference) supports portable and battery-powered instruments. The 3.3 V single supply also matches CMOS logic families, simplifying interface to FPGAs and microcontrollers without level translation. Typical applications include digital oscilloscope front ends, video digitizers, ultrasound imaging receive channels, point-of-sale barcode scanners, and industrial process control data acquisition. The wide 0 V to VDD input range allows direct sampling of single-ended signals without external signal conditioning. When designing with this part, place a 0.1 uF bypass capacitor close to the VDD pin and ensure the reference input is driven by a low-impedance source. For best linearity, route CLK and digital outputs away from the analog inputs to minimize crosstalk. This page synthesizes distributor stock levels, parametric alternatives from web cross-reference search, and engineering design notes not consolidated on the manufacturer datasheet, providing unique research value for engineers selecting a legacy 8-bit ADC.
XRD87L75AIU - 8-Bit 10MSPS ADC, 3.3V, SSOP-20 | MaxLinear
The MaxLinear XRD87L75AIU is a low-voltage, CMOS, 8-bit, high-speed analog-to-digital converter (ADC) with a 10 MSPS sampling rate, packaged in a 20-pin SSOP. Operating from a single 3.3 V supply, it features an internal sample-and-hold function, an analog input range of 0 V to VDD, and a reference input range of 1 V to VDD, dissipating a typical 25 mW (excluding reference current). What is an 8-bit ADC? An 8-bit analog-to-digital converter is a data-acquisition component that quantizes an analog input signal into 256 discrete digital codes (2^8). ADC components sit in the signal chain hierarchy: ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. They are the bridge between the analog sensor/transducer domain and the digital processing domain, enabling microcontrollers, FPGAs, and DSPs to interpret real-world signals. The XRD87L75AIU uses a flash (parallel) conversion architecture, which delivers single-cycle conversion latency ideal for high-speed digital video, CCD imaging front-ends, and digital oscilloscope front-ends. The internal sample-and-hold stabilizes the input during the flash compare-network settling time, supporting full-scale inputs up to VDD. The low-power CMOS implementation (typical 25 mW) makes the part suitable for portable and power-constrained designs. The 3.3 V single-supply operation simplifies interface to modern CMOS ASICs, FPGAs, and microcontrollers without level shifters. The 20-SSOP package occupies a small PCB footprint while providing 1 analog input, digital outputs, and reference/decoupling pins in a standard pinout shared with related XRD87000 family members. Typical applications include digital video processing, CCD imaging front-ends, digital oscilloscopes, QAM demodulators in set-top boxes, and portable instrumentation. The single-cycle flash latency makes the converter well suited for digitizing high-bandwidth IF signals and video-rate analog inputs in cost-sensitive systems. When designing with this part, place a 0.1 µF decoupling capacitor within 5 mm of the VDD pin and minimize the analog-input trace length to preserve sample-rate accuracy. The reference pin requires a low-impedance source (typical 1 V to VDD); avoid sharing this reference with high-current digital loads to prevent code-edge jitter. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
XRD87L75AIUTR-F - 8-Bit 10MSPS Flash ADC, 20-SSOP | MaxLinear
The MaxLinear XRD87L75AIUTR-F (originally Exar Corporation) is an 8-bit resolution, 10 MSPS analog-to-digital converter built on a 2-step flash architecture with an internal sample-and-hold, packaged in a 20-pin SSOP (0.209 inch / 5.30 mm width) with tape-and-reel packaging. It operates from a single 3.3 V supply, accepts a single-ended analog input from 0 V to VDD, and provides an external reference input range of 1 V to VDD for flexible full-scale setting. An ADC (Analog-to-Digital Converter) is a data acquisition integrated circuit that converts continuous analog signals into discrete binary codes at a defined sampling rate. Within the broader hierarchy, this device sits as: ADC -> data converter -> data acquisition IC -> mixed-signal semiconductor. The 2-step flash architecture is a variant of the flash ADC that halves the comparator count versus a full flash, reducing both die cost and input capacitance, while the integrated S/H eliminates the need for an external track-and-hold amplifier in most applications. Key features include 8-bit resolution at 10 MHz sampling rate, single 3.3 V supply operation with 25 mW typical power dissipation (excluding external reference current), parallel digital output interface for direct connection to microcontrollers, DSPs, or FPGAs, and latch-up free CMOS construction for robust ESD/handling performance. The internal sample-and-hold eliminates external S/H requirements and supports full Nyquist bandwidth input frequencies, making the device suitable for general-purpose digitizing tasks where cost-per-channel matters. The XRD87L75AIUTR-F architecture uses a 2-step flash topology with on-chip S/H, error correction, and a parallel CMOS-compatible output bus. Its low input capacitance and high input bandwidth reduce drive-amplifier loading, and the part is specified to operate from a single 3.3 V rail, simplifying power tree design in 3.3 V logic systems. The internal reference buffer accepts a user-supplied reference from 1 V to VDD for system-level gain calibration. The -F suffix denotes the lead-free, RoHS-compliant tape-and-reel packaging option. Typical applications include video digitizing and graphics capture, CCD/CIS sensor front-ends, digital oscilloscope front-ends, baseband IF sampling, low-cost digital imaging, and portable instrumentation. The 8-bit/10 MSPS combination aligns well with standard-definition video bandwidths (~5 MHz) and consumer imaging throughput requirements. When designing with this part, place the input RC anti-alias filter directly at the analog input pin and provide a low-impedance reference buffer because the reference pin input current scales with sampling rate. Parallel output bus traces should be length-matched and series-terminated near the ADC to limit digital switching noise coupling back into the analog input. Decouple VDD with both a 0.1 uF ceramic and a 10 uF bulk capacitor placed within 5 mm of the supply pin. This page consolidates distributor pricing, same-family MaxLinear/Exar drop-in alternatives, and practical design notes not collected in the original manufacturer datasheet, giving engineers a single reference for procurement, second-source planning, and PCB bring-up.
XRD87L99AIQ-F - 10-Bit 2 MSPS 8-Ch MUX ADC | MaxLinear
The MaxLinear XRD87L99AIQ-F is a low-power 10-bit analog-to-digital converter with an 8-channel analog input multiplexer and a 2 MSPS sampling rate, housed in a 44-pin QFP package. It operates from a single 2.7V to 5.5V supply, draws only 24 mW typical at full speed, and falls to 0.1 mW in its hardware power-down mode. The device requires no external sample-and-hold for input signals below 100 kHz or for CCD-style signals, simplifying analog front-end design. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages into a parallel digital word at a defined clock rate. ADCs sit within the broader hierarchy of data acquisition ICs -> data converters -> mixed-signal ICs -> integrated circuits, and they are the critical bridge between analog sensors and digital processors. Multi-channel, low-power ADCs like the XRD87L99AIQ-F are typically used to digitize several sensors with one converter, reducing board area, BOM cost, and software overhead in embedded designs. Key features of the XRD87L99AIQ-F include 10-bit resolution, an integrated 8-to-1 analog multiplexer with channel-address latches, a parallel microprocessor-compatible digital interface, an external reference input, and a hardware power-down pin. Its wide input range covers GND to VDD, which lets the device directly digitize rail-to-rail sensor outputs. The 44-QFP package is industry-standard and supports conventional surface-mount assembly. Typical applications for the XRD87L99AIQ-F include multi-channel data acquisition systems, CCD signal processing chains in scanner and copier subsystems, portable and battery-powered instrumentation, industrial process monitoring, and embedded control boards that need to read several analog sensors at moderate speeds. In each case the device's low power dissipation, integrated mux, and parallel interface reduce both component count and software complexity. Designers should remember that the XRD87L99AIQ-F is in EOL/last-time-buy status according to distributor lifecycle fields, so long-life designs should plan for a qualified replacement or place a last-time-buy order. Drive the analog inputs with low-impedance sources to keep the input settling error inside the 10-bit budget, and place the 0.1uF VDD decoupling capacitor within a few millimeters of the supply pin.