XRD87L75AIUTR-F - 8-Bit 10MSPS Flash ADC, 20-SSOP | MaxLinear
MPN: XRD87L75AIUTR-F ✗ Cuối đờiXRD87L75AIUTR-F Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho XRD87L75AIUTR-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 XRD87L75AIUTR-F (cùng hình factor và footprint) — khác nhau ở Package, Resolution, Architecture, Number of Channels, Input Type.
XRD87L75AIUTR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
TLV2545IDGKR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLC549IDR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1285BCSA
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PCM4202IDBREP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →XRD87L75AIUTR-F Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 8 bit |
| Tỷ lệ lấy mẫu | 10 MSPS (10 MHz) |
| Number of Channels | 1 (Single) |
| Architecture | 2-Step Flash with internal S/H |
| Input Type | Single-Ended |
| Analog Input Voltage Range | 0 V to VDD |
| Reference Type | External |
| Reference Voltage Range | 1 V to VDD |
| Điện áp cung cấp | 3.3 V (single supply) |
| Power Dissipation | 25 mW typical (excluding reference) |
| Data Interface | Parallel (8-bit CMOS) |
| Sample-and-Hold | Internal (1:1 with ADC) |
| Configuration | S/H-ADC, 1 S/H : 1 ADC |
| Hộp | 20-SSOP (0.209 inch / 5.30 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tape & Reel (-F suffix) |
| Latch-up | Latch-up Free (CMOS) |
| RoHS / Lead-Free | Lead-free, RoHS compliant (-F suffix) |
| Part Status | Obsolete (per MaxLinear catalog) |
Cấu hình chân XRD87L75AIUTR-F
| Chân 1 | VREF — External reference input (1V to VDD) |
| Chân 2 | AIN — Analog input (single-ended, 0V to VDD) |
| Chân 3 | AGND — Analog ground |
| Chân 4 | DGND — Digital ground |
| Chân 5 | VDD — +3.3 V analog/digital supply |
| Chân 6 | D0 (LSB) — Parallel data output bit 0 (LSB) |
| Chân 7 | D1 — Parallel data output bit 1 |
| Chân 8 | D2 — Parallel data output bit 2 |
| Chân 9 | D3 — Parallel data output bit 3 |
| Chân 10 | D4 — Parallel data output bit 4 |
| Chân 11 | D5 — Parallel data output bit 5 |
| Chân 12 | D6 — Parallel data output bit 6 |
| Chân 13 | D7 (MSB) — Parallel data output bit 7 (MSB) |
| Chân 14 | /CS — Chip select (active low) |
| Chân 15 | /RD — Read strobe (active low) |
| Chân 16 | CLK — Sampling clock input |
| Chân 17 | OF/OFST — Offset adjust / calibration (per datasheet) |
| Chân 18 | NC — Not connected (per datasheet) |
| Chân 19 | NC — Not connected (per datasheet) |
| Chân 20 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
XRD87L75AIUTR-F phù hợp cho 6 Áp dụngs: Standard-Definition Video Digitizing, Digital Oscilloscope Front-End, CCD/CIS Sensor Front-End, Baseband IF Sampling, Low-Cost Digital Imaging, Portable Instrumentation.
Standard-Definition Video Digitizing
The XRD87L75AIUTR-F's 8-bit resolution at 10 MSPS aligns directly with standard-definition video bandwidth (~5 MHz video, sampled at 10 MSPS to satisfy Nyquist). According to the Exar/MaxLinear datasheet, the internal S/H supports full-Nyquist input bandwidth, and the parallel 8-bit CMOS output bus streams pixels directly into an FPGA or video encoder. Unlike a high-resolution SAR ADC, this part delivers low-latency conversion, no pipeline delay, and a low 25 mW typical power dissipation for portable capture cards.
Được đề xuất
Digital Oscilloscope Front-End
The XRD87L75AIUTR-F's 2-step flash architecture with internal S/H gives the low-latency, real-time sampling that a DSO front-end requires. Per the Exar/MaxLinear datasheet, the part digitizes a single-ended input up to VDD, accepting a 1V-VDD external reference so the engineer sets full-scale to match the front-end attenuator. The 20-SSOP footprint keeps the analog section on a small board area, and the parallel output bus feeds an FPGA capture buffer directly without complex serial-deserialize logic.
Được đề xuất
CCD/CIS Sensor Front-End
The XRD87L75AIUTR-F is well suited for digitizing CCD or CIS image sensor analog outputs at line-scan speeds up to 10 MSPS. Per the MaxLinear datasheet, the 1:1 internal S/H ratio and single-ended 0V-VDD input accept CIS-style video signals directly, and the parallel CMOS digital output drives an FPGA line buffer in real time. The 3.3 V single-supply operation matches typical CIS bias rails, eliminating the need for level shifting, and the 25 mW typical power dissipation keeps scanner/fax/copier thermal budgets on track.
Được đề xuất
Baseband IF Sampling
The XRD87L75AIUTR-F's 10 MSPS throughput makes it viable for narrowband baseband IF sampling in low-cost software-defined radio and communication receivers. According to the Exar/MaxLinear datasheet, the internal S/H and single 3.3 V supply keep the receiver's analog section compact, and the parallel CMOS outputs route directly into a baseband DSP or FPGA. An external anti-alias RC filter at AIN limits out-of-band noise, and the 1V-VDD external reference sets full-scale to match the IF chain's signal swing.
Được đề xuất
Low-Cost Digital Imaging
The XRD87L75AIUTR-F provides 8-bit/10 MSPS throughput for cost-sensitive digital still camera or webcam front-ends, where 8-bit color depth is acceptable. Per the MaxLinear datasheet, the 2-step flash architecture is cheaper than full-flash and faster than a SAR, hitting the right cost/speed point for consumer imaging. The 20-SSOP footprint enables compact PCB layouts, and the parallel output bus interfaces directly to image-sensor ASICs or entry-level microcontrollers with DMA, avoiding a high-speed serial ADC's protocol stack.
Được đề xuất
Portable Instrumentation
The XRD87L75AIUTR-F's 25 mW typical power dissipation and 3.3 V single-supply operation suit handheld oscilloscopes, data loggers, and field-test gear where every milliwatt matters. According to the MaxLinear datasheet, the 8-bit/10 MSPS throughput captures transient signals while the internal S/H eliminates external track-and-hold components, shrinking BOM and PCB area. The 20-SSOP package supports dense board layouts typical of portable equipment, and the -F suffix part is lead-free and RoHS compliant for global sale.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho XRD87L75AIUTR-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 | XRD87L75AIUTR | TLV2545IDGK | TLC549ID | MAX1285BCSA | PCM4202IDBREP |
|---|---|---|---|---|---|---|
| Package | 20-SSOP (5.30 mm) | 20-SSOP (5.30 mm) - same | 20-SSOP (DGK) - same | 20-SOIC-class - same | 20-SSOP (CS) - same | 20-SSOP-class - same |
| Brand | MaxLinear (formerly Exar) | MaxLinear | Texas Instruments | Texas Instruments | Maxim Integrated | Texas Instruments |
| Resolution | 8 bit | 8 bit | 12 bit | 8 bit | 12 bit | 24 bit (audio) |
| Sampling Rate | 10 MSPS | 10 MSPS | 10 MSPS | ~45 kSPS | ~300 kSPS | 216 kSPS (audio) |
| Architecture | 2-Step Flash | 2-Step Flash | SAR | SAR | SAR | Delta-Sigma (audio) |
| Supply Voltage | 3.3 V | 3.3 V | 2.7V-5.5V | 3V-6V | 2.7V-5.5V | 3.3V-5V |
| Input Channels | 1 (Single-Ended) | 1 (Single-Ended) | 1 (Single-Ended) | 1 (Single-Ended) | 1 (Single-Ended) | 2 (Stereo audio) |
| Lifecycle Status | Obsolete (MaxLinear) | Obsolete (MaxLinear) | Active (TI) | Active (TI) | Active (Maxim) | Active (TI) |
| RoHS Compliance | Yes (lead-free -F suffix) | No (tin-lead non-F) | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- 2-Step Flash architecture for low cost vs full-flash (vsMAX1285BCSA (12-bit SAR))
- Integrated sample-and-hold eliminates external S/H (vsTLC549ID (8-bit SAR, no internal S/H at high rate))
- Single 3.3 V supply matches modern logic rails (vsPCM4202IDBREP (24-bit audio ADC))
Ghi chú thiết kế
Decouple VDD with a 0.1 uF X7R ceramic plus a 10 uF tantalum or ceramic bulk capacitor placed within 5 mm of the VDD pin. The XRD87L75AIUTR-F samples at 10 MSPS, so high-frequency switching transients on VDD directly couple into AIN via the internal capacitor network. Split analog VDD and digital VDD with a ferrite bead if the system rail is shared with a noisy digital IC, and place the analog bulk capacitor on the analog side of the bead.
Do not power the XRD87L75AIUTR-F from a 5 V supply; the part is a 3.3 V device and absolute-maximum VDD is below 5 V. The analog input range is 0V-VDD, so even though the input can tolerate 0-3.3 V, applying 5 V to AIN damages the part. If the source signal is 0-5 V, add an external resistor-divider or buffer amplifier with a 3.3 V rail to keep AIN within spec.
Place the input RC anti-alias filter directly at the AIN pin to limit out-of-band noise; a typical first-stage is a 50 ohm series resistor plus a 20 pF capacitor to ground. Route the parallel 8-bit CMOS output bus with matched trace lengths and a series-termination resistor (33-68 ohm) near the ADC to dampen reflections. Keep the analog ground pour solid and stitch it to digital ground only at a single point under the AGND pin to avoid ground-loop noise coupling.
Drive AIN with a low-output-impedance op-amp buffer capable of settling to 0.5 LSB in less than half the clock period at 10 MSPS. The XRD87L75AIUTR-F's switched-capacitor input draws transient current at each clock edge, so a slow op-amp introduces distortion. Recommended: an op-amp with at least 100 MHz GBW and 50 V/us slew rate, such as a current-feedback amplifier for video-bandwidth signals.
Thông tin tuân thủ
RoHS compliant per -F suffix designation (lead-free). Part is flagged obsolete by MaxLinear. Reach/halogen-free/conflict-mineral status not explicitly stated in available data; confirm with MaxLinear environmental compliance documents.
