AD7382BCPZ - 16-Bit Dual SAR ADC | Analog Devices
MPN： AD7382BCPZ ✓ 啟用中AD7382BCPZ 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 offers a good balance of speed, resolution, and power consumption, making it a popular choice for applications such as motor control, power monitoring, and industrial automation. SAR ADCs are known for their low latency and high accuracy, and they are widely used in systems where multiple channels need to be sampled simultaneously.
Key features of the AD7382BCPZ include dual-channel simultaneous sampling, a 4 MSPS throughput rate, and a 16-bit resolution. The device also features a pseudo-differential input configuration, which helps reject common-mode noise. It includes an internal reference buffer and supports both SPI and daisy-chain interfaces, simplifying system integration. The ADC operates over a temperature range of -40°C to +125°C, making it suitable for harsh environments.
The AD7382BCPZ uses a charge redistribution architecture with a capacitive DAC, ensuring excellent linearity and low noise. The device achieves a signal-to-noise ratio (SNR) of 92 dB and a total harmonic distortion (THD) of -110 dB, providing high-fidelity conversion for precision measurement applications. The internal reference buffer reduces external component count, while the flexible digital interface allows easy connection to microcontrollers and DSPs.
Typical applications include motor control, power monitoring, industrial automation, and data acquisition systems. The dual-channel simultaneous sampling capability is particularly useful for applications requiring phase-accurate measurements, such as three-phase power monitoring and motor control. The high throughput rate enables real-time processing of fast-changing signals.
When designing with the AD7382BCPZ, ensure that the reference voltage is stable and well-decoupled. The device requires a 3.3V analog supply and a separate digital supply, which should be properly filtered to minimize noise. The SPI interface should be configured for the desired sampling rate, and the conversion result can be read via the SDO pin.
直接替換替代品，適用於 AD7382BCPZ — 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： AD7382BCPZ （相同外形與佔位） — 差異在於 Input Type, Interface, Package, Resolution, Sampling Rate.
AD7380BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD7381BCPZ
✅ 直接替換聯絡詢價
查看資料表 →AD7381-4BCPZ
✅ 直接替換📋 參考替代品（不在目錄中）
AD7682BCPZ
✅ 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 →AD7382BCPZ 最大額定值與電氣特性
| 解析度 | 16 bits |
| Number of Channels | 2 |
| 取樣率 | 4 MSPS |
| Input Type | Pseudo-differential |
| 介面 | SPI, daisy-chain |
| 供應電壓 | 3.3 V |
| SNR | 92 dB |
| THD | -110 dB |
| 工作溫度範圍 | -40°C to +125°C |
| 封裝 | 16-LFCSP (3x3 mm) |
| 安裝類型 | Surface Mount |
| Reference Type | Internal buffer |
| RoHS 狀態 | Compliant |
AD7382BCPZ 腳位配置
| 腳位 1 | VDD — Analog power supply |
| 腳位 2 | VREF — Reference voltage input |
| 腳位 3 | GND — Ground |
| 腳位 4 | VINA — Analog input channel A |
| 腳位 5 | VINB — Analog input channel B |
| 腳位 6 | GND — Ground |
| 腳位 7 | SCLK — Serial clock input |
| 腳位 8 | SDI — Serial data input |
| 腳位 9 | SDO — Serial data output |
| 腳位 10 | CS — Chip select |
| 腳位 11 | VIO — Digital interface supply |
| 腳位 12 | GND — Ground |
| 腳位 13 | REFIN/REFOUT — Reference input/output |
| 腳位 14 | GND — Ground |
| 腳位 15 | VDD — Analog power supply |
| 腳位 16 | GND — Ground |
典型應用
AD7382BCPZ 適用於 6 應用s: Motor Control, Power Monitoring, Industrial Automation, Data Acquisition Systems, Medical Instrumentation, Test and Measurement.
Motor Control
The AD7382BCPZ's dual-channel simultaneous sampling and 4 MSPS throughput enable precise phase-current and voltage measurements in motor control loops. Its 16-bit resolution and 92 dB SNR ensure accurate current sensing, while the pseudo-differential inputs reject common-mode noise from PWM-driven motors. The SPI interface allows direct connection to MCUs for real-time control, and the wide temperature range supports industrial drives.
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Power Monitoring
In power monitoring systems, the AD7382BCPZ provides simultaneous sampling of voltage and current channels, enabling accurate calculation of active, reactive, and apparent power. The 16-bit resolution and 4 MSPS rate capture fast transients, while the internal reference buffer simplifies design. The device's low THD (-110 dB) ensures minimal distortion in AC measurements, making it suitable for energy metering and grid monitoring.
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Industrial Automation
The AD7382BCPZ is ideal for industrial automation applications such as PLC analog input modules and process control. Its dual-channel simultaneous sampling allows synchronized acquisition of multiple process variables, while the 16-bit resolution provides high measurement accuracy. The device's SPI interface simplifies integration with industrial microcontrollers, and its -40°C to +125°C temperature range ensures reliable operation in harsh factory environments.
推薦
Data Acquisition Systems
The AD7382BCPZ is well-suited for high-speed data acquisition systems, offering 4 MSPS sampling with 16-bit resolution. Its dual-channel simultaneous sampling enables synchronized capture of multiple signals, which is essential for applications like vibration analysis and transient recording. The device's low noise and high linearity ensure accurate representation of fast-changing signals, and the compact LFCSP package saves board space in multi-channel systems.
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Medical Instrumentation
In medical instrumentation, the AD7382BCPZ provides high-resolution, low-noise conversion for applications such as patient monitoring and diagnostic equipment. The 16-bit resolution and 92 dB SNR ensure accurate measurement of physiological signals, while the dual-channel simultaneous sampling allows synchronized acquisition of multiple parameters. The device's small package and low power consumption make it suitable for portable medical devices.
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Test and Measurement
The AD7382BCPZ is ideal for test and measurement equipment such as oscilloscopes and spectrum analyzers, where high-speed, high-resolution data conversion is critical. The 4 MSPS sampling rate and 16-bit resolution enable accurate capture of fast waveforms, while the dual-channel simultaneous sampling supports differential measurements. The device's SPI interface allows easy integration with FPGAs and DSPs for real-time signal analysis.
推薦
推薦產品摘要
工程參考資料，適用於 AD7382BCPZ — 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 | AD7380BCPZ | AD7381BCPZ | AD7381-4BCPZ | AD7682BCPZ |
|---|---|---|---|---|---|
| Package | 16-LFCSP (3x3 mm) | 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 | Analog Devices |
| Resolution | 16 bits | 16 bits | 14 bits | 14 bits | 16 bits |
| Sampling Rate | 4 MSPS | 4 MSPS | 4 MSPS | 4 MSPS | 250 kSPS |
| Number of Channels | 2 | 2 | 2 | 4 | 4 |
| Input Type | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential |
| SNR | 92 dB | 92 dB | 88 dB | 88 dB | 92 dB |
| THD | -110 dB | -110 dB | -100 dB | -100 dB | -110 dB |
主要差異化特點
- Higher resolution than AD7381BCPZ (對比AD7381BCPZ)
- Faster sampling rate than AD7682BCPZ (對比AD7682BCPZ)
- Dual-channel simultaneous sampling (對比AD7682BCPZ)
設計說明
The AD7382BCPZ requires a clean 3.3V analog supply (VDD) and a separate digital supply (VIO). Use low-ESR ceramic capacitors (e.g., 0.1uF and 10uF) placed close to the VDD and VIO pins to decouple high-frequency noise. The reference input (VREF) should also be decoupled with a 10uF capacitor to ensure stable operation.
For optimal performance, place the AD7382BCPZ close to the signal source to minimize trace inductance. Use a solid ground plane and avoid routing digital signals near the analog inputs. The SPI lines (SCLK, SDI, SDO, CS) should be kept short and shielded if necessary to prevent crosstalk.
Ensure that the reference voltage is within the specified range and is stable. Do not exceed the absolute maximum ratings for VDD and VIO. Also, verify that the SPI clock frequency does not exceed the maximum specified in the datasheet to avoid data corruption.
合規資訊
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this non-automotive part.