AD7387BCPZ - 14-Bit Dual SAR ADC 4MSPS | Analog Devices
部品番号: AD7387BCPZ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $9.36 | $9.36 |
| 10 | $8.42 | $84.20 |
| 100 | $7.49 | $749.00 |
| 500 | $6.55 | $3,275.00 |
| 1,000 | $5.62 | $5,620.00 |
AD7387BCPZ 概要
A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and ease of use compared to other ADC architectures like delta-sigma or pipeline converters. SAR ADCs are widely used in applications requiring high resolution and fast sampling, such as motor control, data acquisition, and power monitoring.
Key features of the AD7387BCPZ include a 4-channel input with 2:1 multiplexers, a built-in digital filter, FIFO buffer, soft reset, and power-on reset. It supports simultaneous sampling of two channels, which is essential for applications that require accurate phase alignment between multiple signals. The device also features a channel sequencer mode for automatic scanning of multiple input channels.
The AD7387BCPZ uses a high-speed SAR architecture with an internal reference and track-and-hold circuit. It provides a serial interface (SPI) for communication with microcontrollers or DSPs. The device includes a built-in digital filter to reduce noise and improve signal-to-noise ratio (SNR). The FIFO buffer allows for efficient data transfer without overloading the host processor.
Typical applications include motor control, industrial automation, data acquisition systems, and power monitoring. The simultaneous sampling capability makes it ideal for three-phase motor control where accurate current and voltage measurements are required. The wide operating temperature range of -40°C to +125°C ensures reliable operation in harsh environments.
When designing with the AD7387BCPZ, ensure that the analog input signals are properly conditioned with anti-aliasing filters to avoid aliasing. The reference voltage should be stable and low-noise to achieve the specified SNR. The SPI interface should be isolated if the ADC is used in noisy industrial environments.
ドロップイン代替品: AD7387BCPZ — 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: AD7387BCPZ （同一形状・フットプリント） — 相違点: Resolution, Input Type, Number of Inputs, Data Interface, Reference Type.
クイック比較ツール — 並列比較する代替部品を選択:
AD7386BCPZ
✅ ドロップイン✓ 在庫あり
$46.01 / 個
データシートを見る →AD7388BCPZ
✅ ドロップイン✓ 在庫あり
$4.35 / 個
データシートを見る →AD4684BCPZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AD4685BCPZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AD7387-4BCPZ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AD7387BCPZ 最大定格＆電気的特性
| 分解能 | 14 bits |
| Number of Inputs | 4 (2 differential or 4 single-ended) |
| Number of ADCs | 2 |
| サンプリングレート | 4 MSPS per channel |
| Input Type | Single-ended or differential |
| インターフェース | SPI |
| 電源電圧 | 3.0 V to 3.6 V |
| 動作温度 | -40°C to +125°C |
| パッケージ | 16-LFCSP (3x3 mm) |
| 実装タイプ | Surface Mount |
| 特長 | Simultaneous sampling, multiplexers, built-in digital filter, FIFO buffer, soft reset, power-on reset |
| Architecture | SAR |
| Reference Type | Internal or external |
| RoHS ステータス | Compliant |
AD7387BCPZ ピン構成
| ピン 1 | VDD — Power supply (3.0V to 3.6V) |
| ピン 2 | VIN1A — Analog input channel 1A |
| ピン 3 | VIN1B — Analog input channel 1B |
| ピン 4 | GND — Ground |
| ピン 5 | VIN2A — Analog input channel 2A |
| ピン 6 | VIN2B — Analog input channel 2B |
| ピン 7 | VREF — Reference voltage input |
| ピン 8 | GND — Ground |
| ピン 9 | SCLK — Serial clock input |
| ピン 10 | SDI — Serial data input |
| ピン 11 | SDO — Serial data output |
| ピン 12 | CS — Chip select (active low) |
| ピン 13 | GND — Ground |
| ピン 14 | VIO — I/O supply voltage |
| ピン 15 | GND — Ground |
| ピン 16 | VDD — Power supply |
主な用途
AD7387BCPZ の用途: 6 件s: Motor Control, Data Acquisition Systems, Power Monitoring, Industrial Automation, Medical Instrumentation, Test and Measurement.
Motor Control
The AD7387BCPZ is ideal for motor control applications due to its dual simultaneous sampling capability. It can sample two current or voltage signals at the same time, ensuring accurate phase alignment for three-phase motor drives. The 4 MSPS sampling rate and 14-bit resolution provide sufficient performance for high-speed control loops. The device operates from 3.0 V to 3.6 V, making it suitable for low-power industrial drives. Its built-in digital filter and FIFO buffer simplify data acquisition and reduce processor load.
おすすめ
Data Acquisition Systems
The AD7387BCPZ is well-suited for data acquisition systems requiring high-speed, simultaneous sampling of multiple channels. Its 4 MSPS throughput and 14-bit resolution enable accurate capture of fast transient signals. The device features a channel sequencer mode for automatic scanning of multiple inputs, simplifying system design. The SPI interface allows easy integration with microcontrollers and FPGAs. The wide operating temperature range of -40°C to +125°C ensures reliable operation in industrial environments.
おすすめ
Power Monitoring
The AD7387BCPZ is used in power monitoring systems to measure voltage and current with high accuracy. Its dual simultaneous sampling capability ensures that voltage and current are sampled at the same instant, enabling accurate power calculations. The 14-bit resolution provides fine granularity for detecting small changes in power consumption. The device's low power operation and small package make it suitable for smart grid and energy metering applications. The built-in digital filter helps reduce noise from power lines.
おすすめ
Industrial Automation
The AD7387BCPZ is suitable for industrial automation systems that require precise analog-to-digital conversion. Its high sampling rate and simultaneous sampling capability make it ideal for monitoring multiple sensors in real-time. The device operates over a wide temperature range, ensuring reliability in harsh factory environments. The SPI interface simplifies connection to PLCs and industrial controllers. The built-in FIFO buffer reduces the need for frequent interrupts, improving system efficiency.
おすすめ
Medical Instrumentation
The AD7387BCPZ is used in medical instrumentation for high-speed, high-resolution data acquisition. Its 14-bit resolution and 4 MSPS sampling rate enable accurate capture of biological signals such as ECG and EEG. The device's low power consumption is beneficial for portable medical devices. The small LFCSP package allows for compact designs. The simultaneous sampling feature is useful for applications requiring synchronized measurements from multiple sensors.
おすすめ
Test and Measurement
The AD7387BCPZ is ideal for test and measurement equipment that requires high-speed, accurate data conversion. Its 4 MSPS sampling rate and 14-bit resolution allow for precise measurement of waveforms. The device's dual simultaneous sampling capability is useful for applications like impedance spectroscopy where two signals must be measured simultaneously. The SPI interface enables easy integration with FPGAs for custom test systems. The wide temperature range ensures stable performance in benchtop and field instruments.
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: AD7387BCPZ — 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 | AD7386BCPZ | AD7388BCPZ | AD4684BCPZ |
|---|---|---|---|---|
| Resolution | 14 bits | 16 bits | 12 bits | 16 bits |
| Sampling Rate | 4 MSPS | 4 MSPS | 4 MSPS | 4 MSPS |
| Number of Inputs | 4 | 4 | 4 | 4 |
| Supply Voltage | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V | 3.0V to 3.6V |
| Package | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Simultaneous Sampling | Yes | Yes | Yes | Yes |
| Operating Temperature | -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
- Dual simultaneous sampling （vs AD7386BCPZ)
- 14-bit resolution （vs AD7388BCPZ)
- Pin-compatible with AD7386/AD7388 （vs AD4684BCPZ)
設計ノート
The AD7387BCPZ operates from a 3.0V to 3.6V supply. Use a low-noise LDO to provide a clean supply voltage. Decouple the VDD and VIO pins with 0.1uF and 10uF capacitors placed close to the pins. The VIO pin should be connected to the same supply as the host interface to ensure proper logic levels.
For optimal performance, place the AD7387BCPZ close to the signal source to minimize trace length and reduce noise pickup. Use a solid ground plane under the device. Route analog inputs away from digital signals to avoid crosstalk. Ensure the reference voltage (VREF) is well-filtered and stable.
Avoid exceeding the absolute maximum ratings for the analog inputs. The input voltage should not exceed VDD + 0.3V or go below -0.3V. Ensure the SPI interface is properly configured for the correct clock polarity and phase. The CS pin must be low during data transfer. Use a series resistor on the SDO line to reduce ringing if the trace is long.
コンプライアンス情報
RoHS compliant per distributor listings. AEC-Q100 not applicable for this non-automotive part.