ADC/DAC
Produkte (2364)
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.