AD7988-1BCPZ - 16-Bit 100kSPS SAR ADC | Analog Devices
部品番号: AD7988-1BCPZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
AD7988-1BCPZ 概要
An ADC (analog-to-digital converter) is a device that converts continuous analog signals into discrete digital numbers. The AD7988-1 is a SAR ADC, which uses a binary search algorithm to determine the digital output. SAR ADCs are known for their high speed, low power consumption, and ease of use. They are widely used in data acquisition systems, industrial process control, and medical instrumentation. The AD7988-1 is part of the PulSAR family of ADCs from Analog Devices, which are recognized for their high performance and low power.
Key features of the AD7988-1BCPZ include 16-bit resolution, 100 kSPS sampling rate, and low power consumption. It operates from a single 2.375V to 5.5V supply, and the separate VIO supply allows interface with 1.8V, 2.5V, 3V, or 5V logic. The device also features a daisy-chain capability using the SDI input, enabling multiple ADCs to be connected on a single 3-wire bus. The LFCSP package provides excellent thermal performance and a small footprint.
The AD7988-1 uses a capacitive DAC architecture with a precision comparator, achieving high accuracy and low noise. The device includes an internal reference buffer and supports both external and internal reference options. The SPI-compatible serial interface simplifies connection to microcontrollers and DSPs. The device is specified for operation from -40°C to +125°C, making it suitable for industrial and automotive environments.
Typical applications include battery-powered instruments, portable medical devices, data acquisition systems, and industrial process control. The low power consumption and small package make it ideal for portable and space-constrained designs. The high resolution and accuracy ensure reliable performance in precision measurement applications.
When designing with the AD7988-1, ensure proper decoupling of the VDD and VIO supplies with 0.1uF and 10uF capacitors. The reference input should be bypassed with a 10uF capacitor to maintain stability. The SCLK frequency should be within the specified range to ensure accurate conversion.
ドロップイン代替品: AD7988-1BCPZ — 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: AD7988-1BCPZ （同一形状・フットプリント） — 相違点: Interface, Package, Sampling Rate, Resolution, Architecture.
クイック比較ツール — 並列比較する代替部品を選択:
AD7988-5BCPZ
✅ ドロップイン✓ 在庫あり
$9.5 / 個
データシートを見る →AD7988-1BCPZ-RL7
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7988-1BCPZ-RL
✅ ドロップイン📋 参考代替品（カタログ未掲載）
AD7980BCPZ-RL7
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$18 / 個
データシートを見る →AD7988-1BCPZ 最大定格＆電気的特性
| 分解能 | 16 Bit |
| サンプリングレート | 100 kSPS |
| Number of Inputs | 1 |
| Input Type | Single-Ended |
| インターフェース | SPI |
| Supply Voltage Range | 2.375 V to 5.5 V |
| Logic Supply Voltage (VIO) | 1.8 V to 5.5 V |
| パッケージ | 10-LFCSP-WD (3x3 mm) |
| 動作温度範囲 | -40°C to +125°C |
| Daisy-Chain Support | Yes |
| RoHS ステータス | Compliant |
| 実装タイプ | Surface Mount |
AD7988-1BCPZ ピン構成
| ピン 1 | VDD — Power supply input |
| ピン 2 | GND — Ground |
| ピン 3 | IN — Analog input |
| ピン 4 | REF — Reference input |
| ピン 5 | VIO — Logic supply |
| ピン 6 | SDI — Serial data input (daisy-chain) |
| ピン 7 | SCLK — Serial clock |
| ピン 8 | SDO — Serial data output |
| ピン 9 | CNV — Convert input |
| ピン 10 | GND — Ground (exposed pad) |
主な用途
AD7988-1BCPZ の用途: 6 件s: Battery-Powered Instruments, Data Acquisition Systems, Portable Medical Devices, Industrial Process Control, Test and Measurement Equipment, IoT and Smart Sensors.
Battery-Powered Instruments
The AD7988-1BCPZ's low power consumption and small LFCSP package make it ideal for battery-powered instruments such as handheld multimeters and portable data loggers. Its 16-bit resolution ensures accurate measurements, while the 100 kSPS sampling rate is sufficient for most sensor signals. The SPI interface simplifies connection to low-power microcontrollers, and the wide supply range allows direct operation from a 3.3V or 5V battery. The device's low power dissipation extends battery life, making it a preferred choice for portable applications.
おすすめ
Data Acquisition Systems
In data acquisition systems, the AD7988-1BCPZ provides high-resolution conversion of analog signals from sensors and transducers. Its 16-bit resolution and 100 kSPS sampling rate are well-suited for industrial process control and test equipment. The SPI interface allows easy integration with DSPs and FPGAs, and the daisy-chain feature enables multiple ADCs to share a single bus, reducing wiring complexity. The device's wide operating temperature range (-40°C to +125°C) ensures reliable operation in harsh environments.
おすすめ
Portable Medical Devices
The AD7988-1BCPZ is suitable for portable medical devices such as glucose monitors and patient vital sign monitors. Its low power consumption is critical for battery-operated devices, and the 16-bit resolution provides the precision needed for medical measurements. The small LFCSP package saves board space, and the SPI interface connects easily to medical-grade microcontrollers. The device's wide supply range accommodates various battery chemistries, and its temperature range covers clinical environments.
おすすめ
Industrial Process Control
In industrial process control, the AD7988-1BCPZ converts analog signals from temperature, pressure, and flow sensors into digital data for monitoring and control. Its 16-bit resolution ensures high accuracy, and the 100 kSPS sampling rate is adequate for most process variables. The device's robust operating temperature range and SPI interface make it easy to integrate into PLCs and industrial controllers. The daisy-chain capability allows multiple channels to be read with minimal I/O pins, simplifying system design.
おすすめ
Test and Measurement Equipment
The AD7988-1BCPZ is used in test and measurement equipment such as digital multimeters and spectrum analyzers. Its high resolution and sampling rate enable accurate measurement of AC and DC signals. The SPI interface allows fast data transfer to the host processor, and the small package is ideal for compact benchtop instruments. The device's low power consumption reduces heat generation, improving measurement stability. The wide supply range supports various power architectures.
おすすめ
IoT and Smart Sensors
The AD7988-1BCPZ is well-suited for IoT and smart sensor nodes that require low power and high resolution. Its 16-bit resolution captures fine details from environmental sensors, and the 100 kSPS sampling rate is sufficient for most IoT applications. The SPI interface connects to low-power wireless MCUs, and the small LFCSP package fits into compact sensor modules. The device's low power consumption is essential for battery-powered IoT devices, and its wide supply range allows operation from energy harvesting sources.
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: AD7988-1BCPZ — 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 | AD7988-5BCPZ | AD7980BCPZ-RL7 | AD7690BRMZ |
|---|---|---|---|---|
| Package | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 Bit | 16 Bit | 16 Bit | 16 Bit |
| Sampling Rate | 100 kSPS | 500 kSPS | 1 MSPS | 400 kSPS |
| Input Type | Single-Ended | Single-Ended | Single-Ended | Single-Ended |
| Interface | SPI | SPI | SPI | SPI |
| Supply Voltage Range | 2.375V to 5.5V | 2.375V to 5.5V | 2.375V to 5.5V | 2.3V to 5.5V |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
主な差別化要因
- Lower power consumption compared to AD7988-5 （vs AD7988-5BCPZ)
- Pin-compatible with higher-speed AD7988-5 （vs AD7988-5BCPZ)
- Smaller package than AD7690 （vs AD7690BRMZ)
設計ノート
Decouple the VDD and VIO supplies with 0.1uF and 10uF capacitors placed close to the pins. The reference input should be bypassed with a 10uF capacitor to ensure stability. Use a low-noise LDO for the analog supply to minimize noise coupling into the ADC.
Keep the analog input trace short and shielded to reduce noise pickup. Use a ground plane under the ADC and avoid routing digital signals near the analog input. The exposed pad should be soldered to the ground plane for thermal and electrical performance.
Ensure the SCLK frequency does not exceed the maximum specified in the datasheet to avoid conversion errors. The CNV pin must be held low during conversion. Also, verify that the reference voltage is within the specified range to maintain accuracy.
コンプライアンス情報
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.