XRD87L75AIP-F - 8-Bit 10MSPS ADC, 20-Pin PDIP | MaxLinear
N.º de pieza: XRD87L75AIP-F ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.5 | $6,50 |
| 10 | $5.85 | $58,50 |
| 100 | $5.2 | $520,00 |
| 500 | $4.65 | $2.325,00 |
| 1.000 | $4.15 | $4.150,00 |
XRD87L75AIP-F Descripción general
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.
Alternativas directas para XRD87L75AIP-F — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con XRD87L75AIP-F (mismo factor de forma y huella) — difiere en Architecture, Resolution, Package, Sampling Rate, Digital Interface.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
XRD87L75AID-F
✅ Sustitución directa✓ En stock
$3.79 / unidad
Ver hoja de datos →XRD87L75AIU
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$1.85 / unidad
Ver hoja de datos →MAX187CEWE
✅ Sustitución directa✓ En stock
$10.55 / unidad
Ver hoja de datos →MAX195BEWE
✅ Sustitución directa✓ En stock
$38.4 / unidad
Ver hoja de datos →XRD87L75AIP-F Valores máximos y características eléctricas
| Resolución | 8 bit |
| Frecuencia de muestreo | 10 MSPS |
| Number of Channels | 1 |
| Architecture | 2-step Flash |
| Tensión de alimentación | 3.3 V (single) |
| Analog Input Range | 0 V to VDD |
| Reference Input Range | 1 V to VDD |
| Power Dissipation | 25 mW typical (excluding reference) |
| Sample-and-Hold | Internal |
| Digital Interface | Parallel |
| Latch-Up | Latch-up free CMOS |
| Encapsulado | 20-pin PDIP |
| Tipo de montaje | Through-Hole |
| Estado RoHS | Compliant (Pb-free variant -F) |
Configuración de pines de XRD87L75AIP-F
| Pin 1 | GND — Ground reference |
| Pin 2 | AIN — Analog input (single-ended) |
| Pin 3 | VREF+ — Reference top (decouple to GND) |
| Pin 4 | VREF- — Reference bottom (typically tied to GND) |
| Pin 5 | VDD — +3.3 V analog supply |
| Pin 6 | CLK — Conversion clock input |
| Pin 7 | OE — Output enable (active low) |
| Pin 8 | GND — Digital ground |
| Pin 9 | DB7 — Data bit 7 (MSB) |
| Pin 10 | DB6 — Data bit 6 |
| Pin 11 | DB5 — Data bit 5 |
| Pin 12 | DB4 — Data bit 4 |
| Pin 13 | DB3 — Data bit 3 |
| Pin 14 | DB2 — Data bit 2 |
| Pin 15 | DB1 — Data bit 1 |
| Pin 16 | DB0 — Data bit 0 (LSB) |
| Pin 17 | GND — Ground |
| Pin 18 | VDD — +3.3 V digital supply |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
Aplicaciones típicas
XRD87L75AIP-F es adecuado para 6 aplicacións: Digital Oscilloscope Front End, Video Digitizer, Ultrasound Imaging Receive Channel, Industrial Process Control Data Acquisition, Barcode Scanner Front End, Digital Signal Processing Front End.
Digital Oscilloscope Front End
The XRD87L75AIP-F is well suited for legacy digital oscilloscope front ends, where 8-bit resolution and 10 MSPS sampling enable digitization of repetitive analog waveforms. Its 2-step flash architecture digitizes single-shot events up to 5 MHz input bandwidth, while the internal sample-and-hold captures fast transients without an external track-and-hold. Powered from a single 3.3 V rail and drawing 25 mW typical, it can be deployed in portable handheld scopes. The 0 V to VDD analog input range simplifies front-end scaling, and the parallel digital output connects directly to a 3.3 V FPGA for capture memory.
Recomendado
Video Digitizer
For video-digitizer cards that must convert composite or component video into 8-bit digital streams, the XRD87L75AIP-F offers adequate sampling rate for standard-definition digitizing (typ. 10 MSPS > 2x 4.43 MHz color carrier plus guard band). Its 3.3 V CMOS single supply matches 3.3 V FPGA logic, removing level-translator cost. The 25 mW typical power dissipation keeps board thermal rise modest in multi-channel designs. The 0 V to VDD input range allows direct sampling of ground-referred video, simplifying the analog front end.
Recomendado
Ultrasound Imaging Receive Channel
In ultrasound receive paths, the XRD87L75AIP-F serves as the front-end digitizer for analog echo signals up to 5 MHz. Its 10 MSPS sampling rate exceeds the Nyquist requirement for typical medical-imaging bandwidth, and 8-bit resolution is sufficient for envelope detection. The internal S/H gives sub-nanosecond aperture, preserving transient echo fidelity. The low 25 mW typical power dissipation helps manage heat in multi-element probe arrays. The 20-pin PDIP package simplifies test-fixture loading for beam-former prototyping.
Recomendado
Industrial Process Control Data Acquisition
Industrial process-control DAQ systems use the XRD87L75AIP-F to digitize 0-3.3 V transducer outputs in a through-hole form factor for legacy PLC and SCADA interfaces. The 8-bit resolution (256 codes, approx. 12.9 mV per LSB at 3.3 V) is sufficient for temperature, pressure, and flow-rate channels. The single 3.3 V supply integrates with 3.3 V sensor rails and FPGA-based controllers. The wide reference range (1 V to VDD) allows scaling to maximize SNR for low-voltage sensor outputs.
Recomendado
Barcode Scanner Front End
Handheld and fixed-mount barcode scanners benefit from the XRD87L75AIP-F's 10 MSPS throughput and 3.3 V single supply. The fast sample rate captures the high-frequency amplitude variations of reflected laser signals during a single sweep, while 8-bit resolution delivers sufficient dynamic range for grayscale discrimination. The low 25 mW typical power contributes to long battery life in cordless scanners. The PDIP-20 package suits the through-hole assembly commonly used in legacy scanner main boards.
Recomendado
Digital Signal Processing Front End
For digital IF processing in software-defined radio and digital-signal-acquisition designs, the XRD87L75AIP-F converts analog IF signals to digital baseband at 10 MSPS. The 8-bit dynamic range is sufficient for envelope/amplitude processing, particularly when paired with digital filtering and decimation. The 3.3 V CMOS outputs match 3.3 V DSP data buses without external buffers. The internal S/H minimizes sample-to-sample jitter, critical for synchronous demodulation and FFT analysis.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para XRD87L75AIP-F — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | XRD87L75AID-F | XRD87L75AIU | MAX187CEWE | MAX195BEWE |
|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin SOIC | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP |
| Brand | MaxLinear | MaxLinear | MaxLinear | Analog Devices | Analog Devices |
| Resolution | 8 bit | 8 bit | 8 bit | 12 bit | 12 bit |
| Supply Voltage | 3.3 V single | 3.3 V single | 3.3 V single | +5 V single | +/-5 V or +5 V |
| Internal S/H | Yes | Yes | Yes | Yes | Yes (SAR) |
| Architecture | 2-step Flash | 2-step Flash | 2-step Flash | SAR | SAR |
Diferenciadores clave
- True single 3.3 V supply with internal S/H (frente a MAX195BEWE)
- 2-step flash architecture at 10 MSPS (frente a MAX187CEWE)
- PDIP-20 through-hole package (frente a XRD87L75AID-F)
Notas de diseño
Estimated: place a 0.1 uF ceramic bypass capacitor within 5 mm of the VDD pin and add a 10 uF bulk capacitor near the IC. Provide a low-impedance analog ground plane; the PDIP package's lead inductance (typ. 1-2 nH per pin) benefits from short ground and supply traces. Keep analog input traces short and routed away from digital outputs (DB0-DB7, CLK) to minimize digital switching noise coupling.
The reference input (VREF+ to VREF-) must be driven by a low-noise, low-impedance source. Reference noise directly translates into conversion noise; for full 10 MSPS throughput, use a high-stability reference with < 10 uVrms broadband noise and adequate decoupling (10 uF tantalum + 0.1 uF ceramic in parallel). Estimated VREF input current at 10 MSPS is typically a few mA; budget accordingly for the reference driver.
To preserve ADC dynamic performance, the CLK input should be driven by a low-jitter source. Estimated: aperture jitter sensitivity is on the order of 50-100 ps per LSB at 10 MSPS; use a clean CMOS clock with sharp edges and short trace length. Route DB0-DB7 in parallel matched-length traces if the bus is terminated into an FPGA register to limit bus skew.
Do not power the analog and digital sides from separate, poorly-coupled rails; if using split analog/digital grounds, tie them together at a single point under the ADC. Avoid driving AIN above VDD or below GND (clamp protection diodes conduct), which can damage the input. Verify the output-enable (OE) timing in the datasheet to avoid bus contention when cascading multiple ADCs on the same data bus.
Información de cumplimiento
RoHS compliant per -F suffix. Not AEC-Q100 qualified; this is a commercial/industrial-grade part. Operating temperature range not specified in the verified web data; see datasheet for full range.
