AD7476AAKSZ-REEL - 12-bit 1MSPS SAR ADC SC-70 | ADI
部品番号: AD7476AAKSZ-REEL ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.32 | $6.32 |
| 10 | $5.69 | $56.90 |
| 100 | $5.05 | $505.00 |
| 500 | $4.54 | $2,270.00 |
| 1,000 | $4.04 | $4,040.00 |
AD7476AAKSZ-REEL 概要
An ADC is a data converter that transforms a continuous analog voltage into a discrete digital code. SAR (Successive Approximation Register) ADCs use a binary-search algorithm combined with an internal DAC to resolve each conversion in a fixed number of clock cycles, balancing speed, accuracy, and power efficiency. Within the converter hierarchy, this places the AD7476A in the precision, low-power, successive-approximation sub-family, well-suited for battery-powered and space-constrained instrumentation.
Key features of the AD7476A include 12-bit resolution, 1 MSPS throughput, a wide 2.35 V to 5.25 V single-supply input range, low power consumption, and a small 6-lead SC-70 outline. The -REEL suffix denotes tape-and-reel packaging for high-speed pick-and-place assembly. The part shares pinout with the 10-bit AD7477A and 8-bit AD7478A, allowing designers to migrate resolution by simply changing the device.
Typical applications include portable and battery-powered systems, instrumentation, data acquisition front-ends, optical sensor front-ends, and general-purpose analog monitoring in industrial, medical, and consumer designs. The SC-70 footprint makes it attractive where PCB real estate is at a premium.
When designing with this device, provide adequate decoupling near the supply pin and ensure the analog input is bandwidth-limited to avoid aliasing. The wide supply range simplifies integration into both 3.3 V and 5 V systems.
This page synthesizes distributor pricing, verified pin-compatible alternatives, and practical design notes curated for engineers — beyond what is found in the manufacturer datasheet.
ドロップイン代替品: AD7476AAKSZ-REEL — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: AD7476AAKSZ-REEL （同一形状・フットプリント） — 相違点: Architecture, Resolution, Data Interface, Input Type, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
AD7476AAKSZ-REEL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7477AAKSZ-REEL
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7478AAKSZ-REEL
✅ ドロップイン✓ 在庫あり
$1.52 / 個
データシートを見る →AD7476AAKSZ-500RL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7476AAKS-500RL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7476AAKSZ-REEL 最大定格＆電気的特性
| 分解能 | 12 bits |
| Number of Channels | 1 |
| Converter Type | SAR (Successive Approximation Register) |
| Throughput Rate | 1 MSPS |
| Supply Voltage Range | 2.35 V to 5.25 V (single supply) |
| Input Type | Single-ended analog input |
| パッケージ | SC-70-6 (6-lead) |
| 実装タイプ | Surface Mount |
| Packaging | Tape & Reel (REEL) |
| Architecture | Charge-redistribution SAR with internal track-and-hold |
| RoHS ステータス | Compliant |
AD7476AAKSZ-REEL ピン構成
| ピン 1 | GND — Ground reference for analog and digital sections |
| ピン 2 | VDD — Power supply input (2.35 V to 5.25 V) |
| ピン 3 | CS — Chip select input (active low) for serial interface |
| ピン 4 | SDATA — Serial data output |
| ピン 5 | SCLK — Serial clock input |
| ピン 6 | AIN — Analog input (single-ended) |
主な用途
AD7476AAKSZ-REEL の用途: 6 件s: Portable Battery-Powered Data Acquisition, Industrial Process Monitoring, Optical Sensor Front-End, Medical Patient Monitoring, Automotive Sensor Interfaces, General-Purpose Test & Measurement.
Portable Battery-Powered Data Acquisition
The AD7476AAKSZ-REEL fits portable data acquisition because its 2.35 V to 5.25 V single-supply range directly accepts Li-ion, 3.3 V, and 5 V rails without level shifting. The 12-bit / 1 MSPS SAR core digitizes sensor voltages with adequate speed for vibration, audio-bandwidth, and general telemetry signals. Placed between the sensor signal-conditioning op-amp and the MCU ADC interface, it converts analog measurements to digital codes. The SC-70-6 package preserves board space on wearable and handheld enclosures, and unlike higher-speed pipeline ADCs, the SAR architecture yields no pipeline latency, simplifying single-shot triggering.
おすすめ
Industrial Process Monitoring
The AD7476AAKSZ-REEL supports industrial process monitoring where 12-bit resolution over a 0 to VDD input span is sufficient for temperature, pressure, and flow transmitters. Its 1 MSPS throughput oversamples slowly varying 4-20 mA loop signals comfortably, allowing averaging filters in firmware to push effective resolution beyond 12 bits. Placed at the output of an op-amp current loop receiver, it converts 0-5 V sensor signals to digital codes for the MCU. The SC-70-6 footprint integrates into compact DIN-rail transmitter heads where PCB area is constrained.
おすすめ
Optical Sensor Front-End
The AD7476AAKSZ-REEL digitizes photodiode or ambient-light sensor signals at up to 1 MSPS, fast enough for pulsed optical encoders and proximity sensors. Its 2.35 V to 5.25 V supply range supports both low-voltage LED drivers and 5 V photodiode bias rails. Placed between the transimpedance amplifier output and the MCU, it provides digital codes for ambient light, colorimeter, or smoke-detector front-ends. The SAR core's inherent single-cycle conversion avoids pipeline delay, critical for closed-loop optical control loops.
おすすめ
Medical Patient Monitoring
The AD7476AAKSZ-REEL suits low-power medical monitoring applications such as pulse oximeter waveform digitizers and body-temperature loggers. Its 12-bit resolution meets IEC 60601-1-4 general-purpose data acquisition thresholds, while the SC-70-6 footprint enables compact, wearable form factors. Placed after the analog front-end (current-to-voltage converter + filter), it provides digital codes for the MCU's arrhythmia or temperature algorithm. Unlike higher-power pipelined ADCs, the SAR architecture's duty-cycled operation extends battery life in portable patient monitors.
おすすめ
Automotive Sensor Interfaces
The AD7476AAKSZ-REEL digitizes sensor signals in non-safety automotive body electronics such as climate-control temperature sensors, seat-position encoders, and battery-management telemetry. Its 2.35 V to 5.25 V supply range accepts 12 V battery rails after regulator step-down. Placed after the sensor conditioning op-amp and anti-aliasing RC, it provides digital codes to the body control module. The SC-70-6 package integrates into space-constrained ECU modules behind dashboards and in door panels.
おすすめ
General-Purpose Test & Measurement
The AD7476AAKSZ-REEL supports benchtop and handheld test equipment where 12-bit resolution at 1 MSPS is sufficient for digitizing transducer outputs. Its single 2.35 V to 5.25 V supply simplifies USB-powered or 9 V battery-powered instrument designs. Placed after the input attenuator and instrumentation amplifier, it provides digital codes for the MCU's display and logging functions. The SC-70-6 package allows integration into compact meter enclosures, and the SAR architecture's lack of pipeline latency simplifies triggered measurements.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: AD7476AAKSZ-REEL — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | AD7476AAKSZ-REEL7 | AD7477AAKSZ-REEL | AD7478AAKSZ-REEL | AD7476AAKSZ-500RL7 | AD7476AAKS-500RL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | SC-70-6 | SC-70-6 | SC-70-6 | SC-70-6 | SC-70-6 | SC-70-6 |
| Resolution | 12 bits | 12 bits | 10 bits | 8 bits | 12 bits | 12 bits |
| Throughput | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Supply Voltage | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V | 2.35 V to 5.25 V |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Reel Quantity | 10000 (13-inch) | 1000 (7-inch) | 10000 (13-inch) | 10000 (13-inch) | 500 | 500 |
主な差別化要因
- Smallest 12-bit 1 MSPS SAR ADC in SC-70-6 （vs AD7477AAKSZ-REEL)
- Wide 2.35 V to 5.25 V single-supply input （vs AD7478AAKSZ-REEL)
- Pin-compatible family migration path （vs AD7476AAKSZ-REEL7)
設計ノート
Decouple the VDD pin (pin 2) with a 0.1 uF ceramic capacitor placed within 3 mm of the pin, with a short, direct ground return to the GND pin. For 1 MSPS operation the supply must be able to source the peak transient current demanded by the SAR charge-redistribution DAC during each conversion. A larger 1 uF to 10 uF bulk capacitor near the supply rail improves noise immunity in mixed-signal layouts.
Keep the analog input trace (pin 6) short and routed away from the digital SCLK (pin 5) and SDATA (pin 4) lines to minimize digital-to-analog coupling. Use a ground plane reference under the SC-70-6 footprint. The compact SC-70 land pattern means that careful component placement is essential — do not run high-frequency digital lines beneath the ADC.
If the analog input source impedance exceeds the datasheet limit, add an op-amp buffer between the source and AIN. Source impedance directly affects the SAR acquisition time and can degrade AC performance at high throughput rates. Use a low-impedance RC anti-aliasing filter (typically 100 ohm + 1 nF) directly at the input pin.
Do not leave CS floating — it must be driven low to initiate a conversion. Ensure the SCLK frequency is within the datasheet's specified range; over-clocking will cause conversion errors. The reference for the SAR DAC is derived from VDD, so VDD noise directly couples into the conversion result — use a clean, well-decoupled supply.
コンプライアンス情報
RoHS compliance per Analog Devices product page. Not AEC-Q100 qualified — this is an industrial/consumer grade part. For automotive applications requiring AEC-Q100, review the ADI automotive-grade portfolio.
