XRD87L75AIP-F - 8-Bit 10MSPS ADC, 20-Pin PDIP | MaxLinear
MPN: XRD87L75AIP-F ✗ Cuối đờiXRD87L75AIP-F Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho XRD87L75AIP-F — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với XRD87L75AIP-F (cùng hình factor và footprint) — khác nhau ở Architecture, Resolution, Package, Sampling Rate, Digital Interface.
XRD87L75AID-F
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →XRD87L75AIU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MAX187CEWE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX195BEWE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →XRD87L75AIP-F Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 8 bit |
| Tỷ lệ lấy mẫu | 10 MSPS |
| Number of Channels | 1 |
| Architecture | 2-step Flash |
| Điện áp cung cấp | 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 |
| Hộp | 20-pin PDIP |
| Kiểu lắp đặt | Through-Hole |
| Trạng thái RoHS | Compliant (Pb-free variant -F) |
Cấu hình chân XRD87L75AIP-F
| Chân 1 | GND — Ground reference |
| Chân 2 | AIN — Analog input (single-ended) |
| Chân 3 | VREF+ — Reference top (decouple to GND) |
| Chân 4 | VREF- — Reference bottom (typically tied to GND) |
| Chân 5 | VDD — +3.3 V analog supply |
| Chân 6 | CLK — Conversion clock input |
| Chân 7 | OE — Output enable (active low) |
| Chân 8 | GND — Digital ground |
| Chân 9 | DB7 — Data bit 7 (MSB) |
| Chân 10 | DB6 — Data bit 6 |
| Chân 11 | DB5 — Data bit 5 |
| Chân 12 | DB4 — Data bit 4 |
| Chân 13 | DB3 — Data bit 3 |
| Chân 14 | DB2 — Data bit 2 |
| Chân 15 | DB1 — Data bit 1 |
| Chân 16 | DB0 — Data bit 0 (LSB) |
| Chân 17 | GND — Ground |
| Chân 18 | VDD — +3.3 V digital supply |
| Chân 19 | NC — Not connected (per datasheet) |
| Chân 20 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
XRD87L75AIP-F phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho XRD87L75AIP-F — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- True single 3.3 V supply with internal S/H (vsMAX195BEWE)
- 2-step flash architecture at 10 MSPS (vsMAX187CEWE)
- PDIP-20 through-hole package (vsXRD87L75AID-F)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.