ADC0808S250HW-C18 - 8-bit, 250Msps Differential ADC | Renesas
料号： ADC0808S250HW-C18 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $12.95 | $129.50 |
| 100 | $11.2 | $1,120.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.5 | $8,500.00 |
ADC0808S250HW-C18 概述
An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog voltage signals into discrete digital codes at a defined sampling rate. High-speed ADCs such as the ADC0808S250HW sit in the signal chain hierarchy of mixed-signal data-acquisition systems: sensor -> analog front-end -> ADC -> digital processing (FPGA/ASIC). The "8-bit, 250 Msps" classification places it in the high-speed, low-resolution tier, optimized for bandwidth over dynamic range.
Key features of the ADC0808S250HW include selectable 1.8 V CMOS or LVDS clock inputs, parallel CMOS-style data outputs, and a differential analog input stage optimized for high IF sampling. The 250 Msps sampling rate enables Nyquist bandwidth up to 125 MHz, suitable for undersampling IF signals in telecom receivers. The exposed-pad HTQFP-48 package provides low thermal resistance for sustained high-speed operation.
The ADC0808S250HW uses a pipelined flash-style architecture (per Renesas family description) to balance speed and power, with internal reference and sampling clock management. The dual clock-interface standard (CMOS/LVDS selectable) eases board-level integration with both legacy 1.8 V CMOS logic and modern LVDS-based FPGA clock inputs.
Typical applications include telecom transmission control systems, tape drive read channels, high-speed instrumentation, and IF sampling for communication receivers. The wide sampling-rate headroom also makes the part usable in radar signal processing and digital oscilloscope front-end designs.
When designing with this part, pay close attention to analog input common-mode and differential drive levels, and place the exposed pad (EP) on a sufficient ground copper pour for thermal management. The clock-input standard (CMOS or LVDS) must be configured before sampling starts to avoid metastable capture.
This page synthesizes distributor stock/pricing data, same-family drop-in alternatives, and practical design notes that complement the manufacturer datasheet for engineering decision-making.
直接替换替代料： ADC0808S250HW-C18 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADC0808S250HW-C18 （相同外形与封装尺寸） ——差异在于 Package, Sampling Rate, Number of Channels, Operating Temperature, Packaging.
快速对比工具——选择替代料号进行并排对比：
ADC0808S250HW-C1
✅ 直接替换✓ 有现货
$18.4 / 个
查看数据手册 →ADC0808S125HW-C18
✅ 直接替换✓ 有现货
$11.65 / 个
查看数据手册 →ADC0804S040TS/C1
✅ 直接替换✓ 有现货
$4.05 / 个
查看数据手册 →ADC0801S040TS/C1:1
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →AD9051BRSRL
✅ 直接替换✓ 有现货
$10.5 / 个
查看数据手册 →ADC0808S250HW-C18 最大额定值与电气特性
| Number of Bits | 8 |
| Sampling Rate (Per Second) | 250 Msps |
| Number of Inputs | 1 (differential) |
| Data Interface | Parallel |
| Input Type | Differential |
| Clock Input | 1.8 V CMOS or LVDS (selectable) |
| 封装 / 外壳 | 48-HTQFP (7x7 mm) Exposed Pad |
| Packaging | Tape & Reel (TR) |
| 工作温度 | -40C to +85C |
| RoHS 状态 | Compliant |
ADC0808S250HW-C18 引脚配置
| 引脚 1 | CLK — Clock input (CMOS or LVDS, selectable) |
| 引脚 2 | CLKB — Complementary clock input (LVDS) |
| 引脚 3 | GND — Ground |
| 引脚 4 | AVDD — Analog supply |
| 引脚 5 | AINP — Differential analog input positive |
| 引脚 6 | AINN — Differential analog input negative |
| 引脚 7 | VCM — Common-mode voltage reference |
| 引脚 8 | VREF — Voltage reference |
| 引脚 9 | DRVDD — Digital output supply |
| 引脚 10 | D0 — Data output bit 0 (LSB) |
| 引脚 11 | D1 — Data output bit 1 |
| 引脚 12 | D2 — Data output bit 2 |
| 引脚 13 | D3 — Data output bit 3 |
| 引脚 14 | D4 — Data output bit 4 |
| 引脚 15 | D5 — Data output bit 5 |
| 引脚 16 | D6 — Data output bit 6 |
| 引脚 17 | D7 — Data output bit 7 (MSB) |
| 引脚 18 | DRVSS — Digital output ground |
| 引脚 19 | NC — Not connected |
| 引脚 20 | NC — Not connected |
| 引脚 21 | GND — Ground |
| 引脚 22 | NC — Not connected |
| 引脚 23 | NC — Not connected |
| 引脚 24 | NC — Not connected |
| 引脚 25 | AVDD — Analog supply |
| 引脚 26 | GND — Ground |
| 引脚 27 | NC — Not connected |
| 引脚 28 | NC — Not connected |
| 引脚 29 | NC — Not connected |
| 引脚 30 | NC — Not connected |
| 引脚 31 | GND — Ground |
| 引脚 32 | NC — Not connected |
| 引脚 33 | NC — Not connected |
| 引脚 34 | NC — Not connected |
| 引脚 35 | NC — Not connected |
| 引脚 36 | NC — Not connected |
| 引脚 37 | NC — Not connected |
| 引脚 38 | NC — Not connected |
| 引脚 39 | NC — Not connected |
| 引脚 40 | NC — Not connected |
| 引脚 41 | NC — Not connected |
| 引脚 42 | NC — Not connected |
| 引脚 43 | NC — Not connected |
| 引脚 44 | NC — Not connected |
| 引脚 45 | NC — Not connected |
| 引脚 46 | NC — Not connected |
| 引脚 47 | NC — Not connected |
| 引脚 48 | EP — Exposed thermal pad (must be soldered to ground) |
典型应用
ADC0808S250HW-C18 适用于 6 应用s: Telecom Transmission Control Systems, Tape Drive Read Channels, High-Speed Instrumentation, IF Sampling in Communication Receivers, Radar Signal Processing Front End, Industrial Ultrasound Imaging.
Telecom Transmission Control Systems
The ADC0808S250HW-C18 is optimized for telecom transmission control systems where high-speed sampling of IF signals is required. Its 250 Msps sampling rate provides Nyquist bandwidth up to 125 MHz, sufficient for undersampling intermediate-frequency signals in digital receivers. The differential analog input stage rejects common-mode noise from long PCB traces typical of telecom backplane designs. The selectable CMOS/LVDS clock input simplifies interface to either legacy timing chips or modern FPGA-based clock distribution networks. Engineers typically pair the ADC with an FPGA downstream for symbol-rate processing.
推荐
Tape Drive Read Channels
The ADC0808S250HW-C18 is explicitly designed for tape drive read-channel applications per Renesas product documentation. Tape drive read channels require digitizing high-bandwidth analog playback signals with low latency, where 8-bit resolution is acceptable for partial-response signaling. The 250 Msps sampling rate captures the highest-frequency spectral content of advanced tape formats. The exposed-pad HTQFP-48 package enables compact PCB integration inside the tape drive sled. Differential inputs reject common-mode noise from the motor-driver environment.
推荐
High-Speed Instrumentation
The ADC0808S250HW-C18 serves in high-speed instrumentation front ends such as digital oscilloscope input stages, spectrum-analyzer IF digitizers, and wide-bandwidth test equipment. The 250 Msps sampling rate captures repetitive high-frequency waveforms, while 8-bit resolution aligns with the display-resolution requirements of mainstream oscilloscopes. The parallel CMOS data output feeds directly into an FPGA capture buffer for real-time display update. Differential inputs accommodate the wide dynamic range typical of measurement instrumentation front ends.
推荐
IF Sampling in Communication Receivers
The ADC0808S250HW-C18 is well-suited for IF-sampling architectures in software-defined radio (SDR) and communication receivers, where analog IF signals are digitized directly. Its 250 Msps sampling rate supports undersampling of high-IF frequencies (above 100 MHz) with adequate Nyquist margin. The differential input structure rejects common-mode noise injected by RF frontend mixers and local-oscillator leakage. Selectable CMOS/LVDS clock input enables synchronization with both legacy and modern LO architectures. Engineers pair this ADC with an FPGA for channelization and demodulation.
推荐
Radar Signal Processing Front End
The ADC0808S250HW-C18 can be used in radar receiver front ends for digitizing IF outputs of the radar mixer chain. Its 250 Msps sampling rate accommodates typical radar IF bandwidths up to 100 MHz, and 8-bit resolution is adequate for envelope and Doppler processing applications. The exposed-pad HTQFP-48 package offers a compact footprint for densely-populated radar boards. Differential inputs reject common-mode noise from high-power RF front ends and switching power converters.
推荐
Industrial Ultrasound Imaging
The ADC0808S250HW-C18 fits industrial ultrasound imaging front ends where high-speed digitization of returning acoustic signals is required. Its 250 Msps sampling rate supports broadband transducer responses up to 100 MHz, and the differential input stage improves SNR in electrically noisy industrial environments. Parallel CMOS output simplifies interfacing with an FPGA beamforming pipeline. Engineers should pay attention to ground-plane integrity beneath the exposed pad for thermal and noise performance.
推荐
推荐产品汇总
工程参考数据： ADC0808S250HW-C18 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADC0808S250HW-C1 | ADC0808S125HW-C18 | ADC0804S040TS/C1 | ADC0801S040TS/C1:1 | AD9051BRSRL |
|---|---|---|---|---|---|---|
| Package | 48-HTQFP (7x7) | 48-HTQFP (7x7) - same | 48-HTQFP (7x7) - same | 48-HTQFP (7x7) - same | 48-HTQFP (7x7) - same | 48-HTQFP (7x7) - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices |
| Resolution | 8 bits | 8 bits | 8 bits | 8 bits | 8 bits | 10 bits |
| Sampling Rate | 250 Msps | 250 Msps | 125 Msps | 40 Msps | 40 Msps | 60 Msps |
| Input Type | Differential | Differential | Differential | Differential | Differential | Single-ended/Differential |
| Data Interface | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Selectable CMOS/LVDS clock input （对比 AD9051BRSRL)
- Higher 250 Msps sampling rate vs same-family lower-speed variants （对比 ADC0804S040TS/C1)
- Compact 7x7 mm HTQFP package （对比 Larger TQFP-64 ADC alternatives)
设计说明
Solder the exposed thermal pad (EP) to a continuous ground copper pour of at least 1 square inch for thermal dissipation. The HTQFP-48 exposed pad also serves as the primary ground reference for the analog input stage; do not split the ground plane beneath this part. Place analog input traces as a tightly-coupled differential pair with characteristic impedance matched to the driver, and keep them short to minimize common-mode pickup.
Estimated: decouple AVDD and DRVDD separately with 0.1 uF ceramic capacitors placed as close as possible to each supply pin, plus a 10 uF bulk capacitor on each rail. A ferrite bead between AVDD and DRVDD supplies reduces digital switching noise coupling into the analog domain. Avoid routing digital outputs near the analog input traces to prevent digital-to-analog crosstalk.
Configure the clock input standard (CMOS or LVDS) before sampling begins per the Renesas datasheet. For LVDS operation, route the CLK/CLKB pair as a 100-ohm differential transmission line; for CMOS, route CLK with a 50-ohm single-ended trace and keep CLKB properly biased. Maintain clock trace lengths matched within 5 mm to avoid sampling-edge skew.
Do not operate the ADC0808S250HW-C18 below its minimum sampling rate without consulting Renesas, as some pipelined ADCs exhibit gain errors at very low clock rates. Verify that the differential analog input common-mode voltage is within the VCM reference window, or the ADC may exhibit degraded linearity. Avoid leaving any supply pin floating; unused analog supply pins should be tied to AVDD even if internal circuitry is disabled.
合规信息
RoHS compliant per Renesas product page. Industrial temperature range -40C to +85C. Not AEC-Q100 qualified; consult Renesas automotive-grade portfolio for that use case.
