AD7382BCPZ - 16-Bit Dual SAR ADC | Analog Devices
MPN: AD7382BCPZ ✓ Hoạt độngAD7382BCPZ Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho AD7382BCPZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với AD7382BCPZ (cùng hình factor và footprint) — khác nhau ở Input Type, Interface, Package, Resolution, Sampling Rate.
AD7380BCPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD7381BCPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD7381-4BCPZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7682BCPZ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →AD4696BCPZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →AD7382BCPZ Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bits |
| Number of Channels | 2 |
| Tỷ lệ lấy mẫu | 4 MSPS |
| Input Type | Pseudo-differential |
| Giao diện | SPI, daisy-chain |
| Điện áp cung cấp | 3.3 V |
| SNR | 92 dB |
| THD | -110 dB |
| Khoảng nhiệt độ hoạt động | -40°C to +125°C |
| Hộp | 16-LFCSP (3x3 mm) |
| Kiểu lắp đặt | Surface Mount |
| Reference Type | Internal buffer |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD7382BCPZ
| Chân 1 | VDD — Analog power supply |
| Chân 2 | VREF — Reference voltage input |
| Chân 3 | GND — Ground |
| Chân 4 | VINA — Analog input channel A |
| Chân 5 | VINB — Analog input channel B |
| Chân 6 | GND — Ground |
| Chân 7 | SCLK — Serial clock input |
| Chân 8 | SDI — Serial data input |
| Chân 9 | SDO — Serial data output |
| Chân 10 | CS — Chip select |
| Chân 11 | VIO — Digital interface supply |
| Chân 12 | GND — Ground |
| Chân 13 | REFIN/REFOUT — Reference input/output |
| Chân 14 | GND — Ground |
| Chân 15 | VDD — Analog power supply |
| Chân 16 | GND — Ground |
Ứng dụng tiêu biểu
AD7382BCPZ phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7382BCPZ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Higher resolution than AD7381BCPZ (vsAD7381BCPZ)
- Faster sampling rate than AD7682BCPZ (vsAD7682BCPZ)
- Dual-channel simultaneous sampling (vsAD7682BCPZ)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this non-automotive part.