AD7387BCPZ - 14-Bit Dual SAR ADC 4MSPS | Analog Devices
MPN： AD7387BCPZ ✓ 啟用中AD7387BCPZ 概覽
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.
直接替換替代品，適用於 AD7387BCPZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD7387BCPZ （相同外形與佔位） — 差異在於 Resolution, Input Type, Number of Inputs, Data Interface, Reference Type.
AD7386BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD7388BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD4684BCPZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD4685BCPZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7387-4BCPZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7387BCPZ 最大額定值與電氣特性
| 解析度 | 14 bits |
| Number of Inputs | 4 (2 differential or 4 single-ended) |
| Number of ADCs | 2 |
| 取樣率 | 4 MSPS per channel |
| Input Type | Single-ended or differential |
| 介面 | SPI |
| 供應電壓 | 3.0 V to 3.6 V |
| 工作溫度 | -40°C to +125°C |
| 封裝 | 16-LFCSP (3x3 mm) |
| 安裝類型 | Surface Mount |
| 功能特色 | Simultaneous sampling, multiplexers, built-in digital filter, FIFO buffer, soft reset, power-on reset |
| Architecture | SAR |
| Reference Type | Internal or external |
| RoHS 狀態 | Compliant |
AD7387BCPZ 腳位配置
| 腳位 1 | VDD — Power supply (3.0V to 3.6V) |
| 腳位 2 | VIN1A — Analog input channel 1A |
| 腳位 3 | VIN1B — Analog input channel 1B |
| 腳位 4 | GND — Ground |
| 腳位 5 | VIN2A — Analog input channel 2A |
| 腳位 6 | VIN2B — Analog input channel 2B |
| 腳位 7 | VREF — Reference voltage input |
| 腳位 8 | GND — Ground |
| 腳位 9 | SCLK — Serial clock input |
| 腳位 10 | SDI — Serial data input |
| 腳位 11 | SDO — Serial data output |
| 腳位 12 | CS — Chip select (active low) |
| 腳位 13 | GND — Ground |
| 腳位 14 | VIO — I/O supply voltage |
| 腳位 15 | GND — Ground |
| 腳位 16 | VDD — Power supply |
典型應用
AD7387BCPZ 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 AD7387BCPZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Dual simultaneous sampling (對比AD7386BCPZ)
- 14-bit resolution (對比AD7388BCPZ)
- Pin-compatible with AD7386/AD7388 (對比AD4684BCPZ)
設計說明
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.
合規資訊
RoHS compliant per distributor listings. AEC-Q100 not applicable for this non-automotive part.