AD7385BCPZ - 16-Bit Quad SAR ADC | Analog Devices
MPN： AD7385BCPZ ✓ 啟用中AD7385BCPZ 概覽
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values. The AD7385BCPZ is a SAR ADC, which uses a binary search algorithm to approximate the input voltage with high speed and accuracy. SAR ADCs are widely used in applications requiring a balance of speed, resolution, and power efficiency, such as motor control, power monitoring, and data acquisition systems. The AD7385BCPZ belongs to the family of high-speed, low-power ADCs from Analog Devices, which are known for their excellent AC performance and ease of use.
Key features of the AD7385BCPZ include 16-bit resolution, four simultaneously sampled input channels, and a maximum sampling rate of 2 MSPS (megasamples per second). The device supports both external and internal reference options, and includes a built-in FIFO buffer and soft reset functionality. It also features a power-on reset and simultaneous sampling capability, which is essential for applications that require accurate phase alignment between multiple channels. The ADC achieves a signal-to-noise ratio (SNR) of 86.7 dB and a total harmonic distortion (THD) of -100 dB, ensuring high-fidelity signal conversion.
From a technical perspective, the AD7385BCPZ integrates a precision reference buffer and a high-speed SPI interface that supports daisy-chaining for multiple devices. The device operates over a temperature range of -40°C to +125°C, making it suitable for harsh environments. The LFCSP package provides excellent thermal performance and a small footprint, enabling high-density PCB layouts. The ADC's low power consumption of 200 µA in standby mode makes it ideal for battery-powered and energy-efficient designs.
Typical applications for the AD7385BCPZ include motor control, power monitoring, data acquisition systems, and industrial automation. In motor control, the simultaneous sampling capability ensures accurate current and voltage measurements for precise control loops. In power monitoring, the high resolution and fast sampling rate enable accurate measurement of AC and DC power parameters. The device is also well-suited for vibration analysis and other condition monitoring applications where multi-channel synchronization is critical.
When designing with the AD7385BCPZ, it is important to provide a clean, low-noise power supply and proper decoupling to achieve optimal performance. The reference input should be bypassed with a 10 µF capacitor to ensure stability. Additionally, the SPI interface should be routed with controlled impedance to minimize signal integrity issues at high data rates.
直接替換替代品，適用於 AD7385BCPZ — 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： AD7385BCPZ （相同外形與佔位） — 差異在於 Number of Channels, Resolution, Sampling Rate, Reference Type, Input Type.
AD7386-4BCPZ
✅ 直接替換📋 參考替代品（不在目錄中）
AD7383-4BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD7384-4BCPZ
✅ 直接替換聯絡詢價
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 →AD4694BCPZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD7385BCPZ 最大額定值與電氣特性
| 解析度 | 16-bit |
| Number of Channels | 4 (simultaneous sampling) |
| 取樣率 | 2 MSPS |
| Input Type | Single-ended |
| 介面 | SPI |
| 供應電壓 | 3.0 V to 3.3 V |
| Reference Type | External, Built-in |
| SNR | 86.7 dB |
| THD | -100 dB |
| Power Consumption | 200 µA (standby) |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 24-LFCSP (4x4 mm) |
| 安裝類型 | Surface Mount |
| RoHS | Compliant |
| 功能特色 | FIFO buffer, soft reset, power-on reset, simultaneous sampling |
AD7385BCPZ 腳位配置
| 腳位 1 | VDD — Power supply (3.0V to 3.3V) |
| 腳位 2 | VIN1 — Analog input channel 1 |
| 腳位 3 | VIN2 — Analog input channel 2 |
| 腳位 4 | VIN3 — Analog input channel 3 |
| 腳位 5 | VIN4 — Analog input channel 4 |
| 腳位 6 | GND — Ground |
| 腳位 7 | REF — Reference input/output |
| 腳位 8 | SCLK — Serial clock input |
| 腳位 9 | SDI — Serial data input |
| 腳位 10 | SDO — Serial data output |
| 腳位 11 | CS — Chip select (active low) |
| 腳位 12 | RESET — Reset input |
典型應用
AD7385BCPZ 適用於 6 應用s: Motor Control, Power Monitoring, Data Acquisition Systems, Industrial Automation, Automotive Electronics, Medical Instrumentation.
Motor Control
The AD7385BCPZ is ideal for motor control applications due to its four simultaneous sampling channels and 2 MSPS sampling rate. It enables accurate measurement of phase currents and voltages, which is critical for field-oriented control (FOC) algorithms. The high SNR of 86.7 dB ensures precise current sensing, improving torque control and efficiency. The device's SPI interface allows easy integration with microcontrollers and DSPs. Its wide operating temperature range (-40°C to +125°C) makes it suitable for industrial motor drives. The compact LFCSP package saves PCB space, and the low power consumption (200 µA standby) is beneficial for energy-efficient designs.
推薦
Power Monitoring
The AD7385BCPZ is well-suited for power monitoring applications, such as smart meters and power quality analyzers. Its 16-bit resolution and 2 MSPS sampling rate allow accurate measurement of AC and DC power parameters, including voltage, current, and power factor. The simultaneous sampling capability ensures that voltage and current waveforms are captured with precise phase alignment, which is essential for accurate power calculations. The device's high SNR (86.7 dB) and low THD (-100 dB) contribute to reliable measurements. The SPI interface simplifies data transfer to a host processor, and the built-in reference reduces external component count. The wide temperature range supports outdoor and industrial installations.
推薦
Data Acquisition Systems
The AD7385BCPZ is an excellent choice for general-purpose data acquisition systems (DAQ) that require high-speed, multi-channel analog input. Its four simultaneously sampled channels allow synchronized capture of multiple signals, which is useful for vibration analysis, structural health monitoring, and test and measurement equipment. The 16-bit resolution provides fine granularity, and the 2 MSPS sampling rate captures fast transients. The device's SPI interface supports daisy-chaining, enabling expansion to more channels with minimal wiring. The built-in FIFO buffer helps manage data flow, reducing processor overhead. The compact package and low power consumption make it suitable for portable and embedded DAQ systems.
推薦
Industrial Automation
In industrial automation, the AD7385BCPZ can be used in programmable logic controllers (PLCs) and process control systems to monitor analog sensors such as temperature, pressure, and flow. Its 16-bit resolution ensures precise measurement, and the 2 MSPS sampling rate allows fast response to process changes. The simultaneous sampling feature is beneficial for applications that require correlation between multiple sensor inputs. The device's wide operating temperature range and robust design make it suitable for harsh industrial environments. The SPI interface simplifies integration with industrial microcontrollers, and the low power consumption helps reduce heat generation in control cabinets.
推薦
Automotive Electronics
The AD7385BCPZ is suitable for automotive applications such as battery management systems (BMS) and motor drives in electric vehicles. Its 16-bit resolution and 2 MSPS sampling rate enable accurate monitoring of battery voltage and current, which is critical for state-of-charge estimation. The simultaneous sampling capability ensures that voltage and current are measured at the same instant, improving power calculation accuracy. The device's wide temperature range (-40°C to +125°C) meets automotive requirements, and the compact LFCSP package is ideal for space-constrained electronic control units (ECUs). The SPI interface allows easy communication with automotive microcontrollers.
推薦
Medical Instrumentation
The AD7385BCPZ can be used in medical instrumentation such as patient monitoring systems and diagnostic equipment. Its high resolution (16-bit) and low noise (SNR 86.7 dB) are essential for accurate measurement of physiological signals like ECG and EEG. The simultaneous sampling capability is useful for multi-lead ECG systems where timing alignment is critical. The device's low power consumption is beneficial for battery-powered portable medical devices. The compact package allows for miniaturization of medical devices. The SPI interface simplifies integration with medical-grade microcontrollers, and the wide temperature range ensures reliable operation in clinical environments.
推薦
推薦產品摘要
工程參考資料，適用於 AD7385BCPZ — 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 | AD7386-4BCPZ | AD7383-4BCPZ | AD7384-4BCPZ |
|---|---|---|---|---|
| Package | 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 |
| Resolution | 16-bit | 16-bit | 14-bit | 12-bit |
| Sampling Rate | 2 MSPS | 2 MSPS | 2 MSPS | 2 MSPS |
| Number of Channels | 4 | 4 | 4 | 4 |
| Input Type | Single-ended | Single-ended | Single-ended | Single-ended |
| SNR | 86.7 dB | 86.7 dB | 86.7 dB | 86.7 dB |
| Supply Voltage | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V | 3.0V to 3.3V |
主要差異化特點
- Simultaneous sampling of four channels (對比AD7386-4BCPZ)
- 16-bit resolution with high SNR (對比AD7383-4BCPZ)
- Built-in FIFO buffer (對比AD7384-4BCPZ)
設計說明
Provide a clean, low-noise power supply to the VDD pin. Use a 10 µF ceramic capacitor in parallel with a 0.1 µF capacitor placed as close to the VDD pin as possible. This helps filter high-frequency noise and ensures stable operation of the ADC.
For optimal performance, route the analog input traces with controlled impedance and keep them away from digital signals. Use a solid ground plane under the ADC and avoid ground loops. Place the reference decoupling capacitor (10 µF) close to the REF pin to minimize noise.
Ensure that the SPI interface signals (SCLK, SDI, SDO, CS) are properly terminated and have adequate drive strength. Avoid long traces that can cause signal integrity issues at high data rates. Also, verify that the reference voltage is stable and within the specified range to maintain accuracy.
合規資訊
RoHS compliant per JLCPCB listing. AEC-Q100 qualification not specified; for automotive use, verify with manufacturer.