AD7980BCPZ-RL7 - 16-Bit 1 MSPS PulSAR ADC | Analog Devices
MPN: AD7980BCPZ-RL7 ✓ Hoạt độngAD7980BCPZ-RL7 Tóm tắt
An ADC (Analog-to-Digital Converter) is an electronic component that converts continuous analog signals into discrete digital values. The AD7980 belongs to the PulSAR family of SAR ADCs, which are known for their high precision, low power, and fast sampling rates. SAR ADCs are widely used in data acquisition systems, industrial process control, medical instrumentation, and portable devices where accuracy and speed are critical.
Key features of the AD7980 include 16-bit resolution with no missing codes, a maximum INL of ±1.25 LSB, and a SINAD of dB at 10 kHz. The device supports a pseudo-differential analog input range from 0 V to VREF, with VREF applied externally and independent of VDD. Power dissipation scales linearly with throughput, making it efficient for low-speed applications.
The AD7980 uses a charge redistribution SAR architecture, which provides excellent linearity and low noise. The SPI-compatible serial interface supports daisy-chaining multiple ADCs on a single 3-wire bus and includes an optional busy indicator. The device can interface with any 1.8 V to 5 V digital logic family, offering flexibility in system design.
Typical applications include battery-powered instruments, data acquisition systems, industrial process control, and medical devices. The low power dissipation and small package make it ideal for portable and high-density designs.
When designing with the AD7980, ensure that the reference voltage (REF) is stable and well-decoupled, as it directly affects conversion accuracy. The analog input should be driven by a low-impedance source to maintain the specified performance.
Bộ thay thế dễ dàng lắp đặt cho AD7980BCPZ-RL7 — 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 AD7980BCPZ-RL7 (cùng hình factor và footprint) — khác nhau ở Sampling Rate, Power Dissipation, Resolution, Package, Input Type.
AD7980BCPZ-RL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7982BCPZ-RL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7980BCPZ-RL7 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bits |
| Tỷ lệ lấy mẫu | 1 MSPS |
| Number of Inputs | 1 |
| Input Type | Pseudo-differential |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | External |
| Voltage - Supply, Analog | 2.3 V ~ 5.5 V |
| Voltage - Supply, Digital | 2.3 V ~ 5.5 V |
| INL (Max) | ±1.25 LSB |
| Hộp / Vỏ | 10-LFCSP-WD (3x3) |
| Nhiệt độ hoạt động | -40°C ~ +85°C |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD7980BCPZ-RL7
| Chân 1 | IN+ — Positive analog input |
| Chân 2 | IN- — Negative analog input |
| Chân 3 | GND — Ground |
| Chân 4 | VDD — Power supply |
| Chân 5 | VIO — Digital interface supply |
| Chân 6 | SDI — Serial data input |
| Chân 7 | SCK — Serial clock |
| Chân 8 | SDO — Serial data output |
| Chân 9 | CNV — Convert input |
| Chân 10 | REF — Reference voltage input |
Ứng dụng tiêu biểu
AD7980BCPZ-RL7 phù hợp cho 6 Áp dụngs: Battery-Powered Instruments, Data Acquisition Systems, Industrial Process Control, Medical Instrumentation, Portable Test Equipment, High-Speed Communication Systems.
Battery-Powered Instruments
The AD7980BCPZ-RL7's low power dissipation, which scales linearly with throughput, makes it ideal for battery-powered instruments. At lower sampling rates, power consumption drops significantly, extending battery life. Its 16-bit resolution ensures accurate measurements in portable multimeters, data loggers, and handheld analyzers. The compact 3x3 mm LFCSP package saves board space, and the SPI interface simplifies connection to low-power microcontrollers.
Được đề xuất
Data Acquisition Systems
With a 1 MSPS sampling rate and 16-bit resolution, the AD7980BCPZ-RL7 is well-suited for high-speed data acquisition systems. It can digitize multiple channels with an external multiplexer, and its SPI interface supports daisy-chaining for multi-device synchronization. The pseudo-differential input rejects common-mode noise, improving signal integrity in industrial environments. Its low power dissipation allows dense channel counts without excessive heat.
Được đề xuất
Industrial Process Control
The AD7980BCPZ-RL7 provides the precision and speed required for industrial process control, such as monitoring temperature, pressure, and flow. Its 16-bit resolution with no missing codes ensures accurate representation of sensor signals. The wide operating temperature range (-40°C to +85°C) and robust SPI interface make it suitable for harsh factory environments. The external reference allows calibration to a precise standard, enhancing measurement accuracy.
Được đề xuất
Medical Instrumentation
In medical devices like patient monitors and diagnostic equipment, the AD7980BCPZ-RL7 offers high accuracy and low power, which is critical for battery-operated and safety-critical systems. Its 16-bit resolution captures fine details in biosignals such as ECG and EEG. The small package enables compact device design, and the SPI interface allows easy integration with medical-grade microcontrollers. The device's low noise performance ensures reliable signal acquisition.
Được đề xuất
Portable Test Equipment
The AD7980BCPZ-RL7 is ideal for portable test equipment such as oscilloscopes, spectrum analyzers, and logic analyzers. Its 1 MSPS sampling rate allows real-time digitization of signals, while 16-bit resolution provides high dynamic range. The low power consumption extends battery life in handheld devices. The SPI interface supports high-speed data transfer to processors, and the compact package fits into space-constrained designs.
Được đề xuất
High-Speed Communication Systems
In communication systems, the AD7980BCPZ-RL7 can digitize baseband signals for software-defined radio and other applications. Its 1 MSPS sampling rate and 16-bit resolution provide sufficient bandwidth and dynamic range for many communication signals. The pseudo-differential input helps reject common-mode interference, and the SPI interface allows easy connection to FPGAs or DSPs. The low power dissipation is beneficial in multi-channel systems.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7980BCPZ-RL7 — 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 | AD7980BCPZ-RL | AD7982BCPZ-RL7 | AD7980BRMZ-RL7 |
|---|---|---|---|---|
| Package | 10-LFCSP-WD (3x3) | 10-LFCSP-WD (3x3) | 10-LFCSP-WD (3x3) | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 18 bits | 16 bits |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS |
| Input Type | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential |
| Data Interface | SPI | SPI | SPI | SPI |
| INL (Max) | ±1.25 LSB | ±1.25 LSB | ±1.25 LSB | ±1.25 LSB |
Bảo phân biệt quan trọng
- Pin-compatible with 18-bit AD7982 (vsAD7980BCPZ-RL)
- Low power dissipation scaling with throughput (vsAD7680BRMZ)
- Compact 3x3 mm LFCSP package (vsAD7980BRMZ-RL7)
Ghi chú thiết kế
The AD7980BCPZ-RL7 operates from a single VDD supply (2.3V to 5.5V). Decouple VDD with a 10uF ceramic capacitor and a 0.1uF capacitor close to the pin. The reference voltage (REF) should be decoupled with a 10uF capacitor to ensure stability and low noise, as it directly affects conversion accuracy.
For optimal performance, place the AD7980BCPZ-RL7 close to the signal source and keep analog input traces short and shielded. Use a solid ground plane and avoid routing digital signals near the analog input. The LFCSP package has an exposed pad that should be soldered to the ground plane for thermal and electrical performance.
Ensure the analog input source impedance is low enough to drive the ADC's sampling capacitor. A high-impedance source can cause settling errors. Use an op-amp buffer if necessary. Also, avoid exceeding the absolute maximum ratings on any pin, and ensure the reference voltage is within the specified range to prevent damage.
Thông tin tuân thủ
RoHS compliant per distributor data. Other compliance information not specified in the provided data.
