AD7389BCPZ - 16-Bit Quad SAR ADC 2MSPS | Analog Devices
MPN： AD7389BCPZ ✓ 啟用中AD7389BCPZ 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 excellent accuracy. SAR ADCs are widely used in applications such as motor control, data acquisition systems, and industrial automation, where precise and fast conversion is required. The AD7389BCPZ is part of the AD7389-4 family, which includes quad-channel, simultaneous sampling SAR ADCs with internal reference and differential inputs.
Key features of the AD7389BCPZ include 16-bit resolution, 2 MSPS throughput, quad differential inputs, internal reference, and simultaneous sampling. The device also features a wide common-mode input voltage range, making it ideal for applications with varying input signal levels. The internal reference eliminates the need for an external reference, simplifying the design and reducing component count. The device operates from a single 3.3 V supply, making it compatible with modern digital systems.
The AD7389BCPZ uses a SAR architecture with a capacitive DAC and a comparator, achieving high accuracy and low power consumption. The device includes a track-and-hold circuit that samples all four channels simultaneously, ensuring accurate phase alignment between channels. The digital interface is SPI-compatible, allowing easy connection to microcontrollers and DSPs. The device also features a busy indicator and a conversion result readback, simplifying the data acquisition process.
Typical applications for the AD7389BCPZ include motor control, power monitoring, data acquisition systems, and industrial automation. The device is also suitable for medical instrumentation and test and measurement equipment, where high accuracy and speed are critical. The wide common-mode input range and differential inputs make it ideal for bridge sensors and other differential signal sources.
When designing with the AD7389BCPZ, ensure that the power supply is well decoupled and that the reference voltage is stable. The device requires a clean analog supply and a separate digital supply to minimize noise coupling. The SPI interface should be properly terminated to avoid signal integrity issues. The device is available in a 24-lead LFCSP package, which provides good thermal performance and is suitable for compact PCB layouts.
直接替換替代品，適用於 AD7389BCPZ — 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： AD7389BCPZ （相同外形與佔位） — 差異在於 Input Type, Sampling Rate, Reference Type, Package, Resolution.
AD7380-4BCPZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7381-4BCPZ
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
AD7383-4BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD7384-4BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD4696BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD4695BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD7389BCPZ 最大額定值與電氣特性
| 解析度 | 16 bit |
| Number of Inputs | 4 |
| Input Type | Differential |
| 取樣率 | 2 MSPS |
| Architecture | SAR |
| 供應電壓 | 3.0 V to 3.6 V |
| 封裝 | 24-LFCSP (4x4 mm) |
| 安裝類型 | Surface Mount |
| Reference Type | Internal |
| 介面 | SPI |
| Simultaneous Sampling | Yes |
| Common-Mode Voltage Range | Wide |
| RoHS 狀態 | Compliant |
AD7389BCPZ 腳位配置
| 腳位 1 | AVDD — Analog power supply |
| 腳位 2 | AIN0+ — Positive analog input channel 0 |
| 腳位 3 | AIN0- — Negative analog input channel 0 |
| 腳位 4 | AIN1+ — Positive analog input channel 1 |
| 腳位 5 | AIN1- — Negative analog input channel 1 |
| 腳位 6 | AIN2+ — Positive analog input channel 2 |
| 腳位 7 | AIN2- — Negative analog input channel 2 |
| 腳位 8 | AIN3+ — Positive analog input channel 3 |
| 腳位 9 | AIN3- — Negative analog input channel 3 |
| 腳位 10 | GND — Ground |
| 腳位 11 | VREF — Reference voltage input/output |
| 腳位 12 | DVDD — Digital power supply |
| 腳位 13 | SCLK — Serial clock input |
| 腳位 14 | SDI — Serial data input |
| 腳位 15 | SDO — Serial data output |
| 腳位 16 | CS — Chip select |
| 腳位 17 | BUSY — Busy indicator output |
| 腳位 18 | CONVST — Conversion start input |
| 腳位 19 | GND — Ground |
| 腳位 20 | AVDD — Analog power supply |
| 腳位 21 | AIN0+ — Positive analog input channel 0 |
| 腳位 22 | AIN0- — Negative analog input channel 0 |
| 腳位 23 | AIN1+ — Positive analog input channel 1 |
| 腳位 24 | AIN1- — Negative analog input channel 1 |
典型應用
AD7389BCPZ 適用於 6 應用s: Motor Control, Power Monitoring, Data Acquisition Systems, Industrial Automation, Medical Instrumentation, Test and Measurement.
Motor Control
The AD7389BCPZ is ideal for motor control applications due to its 2 MSPS sampling rate and simultaneous sampling of four channels. It enables accurate current and voltage sensing in multi-phase motor drives, ensuring precise control and protection. The differential inputs reject common-mode noise, improving measurement accuracy in noisy industrial environments. The internal reference simplifies design, and the SPI interface allows easy integration with microcontrollers. The wide common-mode input range accommodates various sensor configurations, making it a versatile choice for servo drives, inverters, and robotics.
推薦
Power Monitoring
The AD7389BCPZ is well-suited for power monitoring applications, such as three-phase power quality analyzers and smart grid equipment. Its simultaneous sampling ensures accurate phase alignment between voltage and current channels, which is critical for calculating real, reactive, and apparent power. The 16-bit resolution and 2 MSPS sampling rate capture fast transients and harmonics. The differential inputs allow direct connection to current transformers and voltage dividers, while the internal reference reduces component count. The SPI interface enables fast data transfer to a host processor for real-time analysis.
推薦
Data Acquisition Systems
The AD7389BCPZ is an excellent choice for high-speed data acquisition systems in test and measurement, scientific instrumentation, and industrial automation. Its 2 MSPS sampling rate and 16-bit resolution provide high-speed, high-precision conversion. The quad simultaneous sampling capability allows synchronized acquisition of multiple signals, which is essential for applications like vibration analysis and multi-channel sensor monitoring. The differential inputs reject common-mode noise, and the internal reference simplifies the design. The compact 24-LFCSP package saves board space, and the SPI interface ensures easy integration with FPGAs and microcontrollers.
推薦
Industrial Automation
In industrial automation, the AD7389BCPZ provides precise analog-to-digital conversion for process control, robotics, and factory automation. Its high speed and simultaneous sampling enable real-time monitoring of multiple sensors, such as pressure, temperature, and position. The differential inputs and wide common-mode range make it robust in electrically noisy environments. The internal reference reduces external component count, and the SPI interface allows seamless connection to PLCs and industrial controllers. The device's small footprint and low power consumption make it suitable for distributed I/O modules and compact control systems.
推薦
Medical Instrumentation
The AD7389BCPZ is suitable for medical instrumentation, such as patient monitoring and diagnostic equipment, where high accuracy and reliability are critical. Its 16-bit resolution and 2 MSPS sampling rate enable precise measurement of physiological signals, such as ECG, EEG, and blood pressure. The simultaneous sampling capability is useful for multi-channel monitoring. The differential inputs reject common-mode interference, improving signal quality. The internal reference and small package make it ideal for portable devices. The SPI interface allows easy integration with medical-grade microcontrollers.
推薦
Test and Measurement
The AD7389BCPZ is a key component in test and measurement equipment, such as oscilloscopes, data loggers, and spectrum analyzers. Its high sampling rate and 16-bit resolution allow accurate capture of fast signals. The quad simultaneous sampling enables multi-channel measurements, which is essential for comparing signals. The differential inputs provide high common-mode rejection, and the internal reference ensures stable performance. The compact package and SPI interface make it easy to integrate into benchtop and portable instruments. The device's low power consumption is beneficial for battery-powered test equipment.
推薦
推薦產品摘要
工程參考資料，適用於 AD7389BCPZ — 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 | AD7380-4BCPZ | AD7381-4BCPZ | AD7383-4BCPZ | AD7384-4BCPZ | AD4696BCPZ | AD4695BCPZ |
|---|---|---|---|---|---|---|---|
| Package | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) | 24-LFCSP (4x4 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 2 MSPS | 2 MSPS | 2 MSPS | 2 MSPS | 2 MSPS | 500 kSPS | 500 kSPS |
| Number of Inputs | 4 | 4 | 4 | 4 | 4 | 8 | 8 |
| Input Type | Differential | Differential | Differential | Differential | Differential | Differential | Differential |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- Simultaneous sampling of four channels (對比AD4696BCPZ)
- Higher sampling rate (對比AD4696BCPZ)
- Wide common-mode input range (對比AD7380-4BCPZ)
設計說明
Decouple the AVDD and DVDD pins with 0.1 uF and 10 uF capacitors placed as close to the pins as possible. Use separate analog and digital ground planes to minimize noise coupling. The AD7389BCPZ operates from 3.0 V to 3.6 V, so ensure the supply is clean and stable.
For optimal performance, route the differential input traces symmetrically and keep them away from digital signals. Use a solid ground plane under the ADC. The 24-LFCSP package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference voltage is stable and well-decoupled. The internal reference requires a 1 uF capacitor on the VREF pin. Avoid driving the analog inputs beyond the specified common-mode range to prevent conversion errors. Also, ensure the SPI interface timing meets the datasheet specifications.
合規資訊
RoHS compliant per distributor listings. Other compliance details not specified in the provided data.