Analog Devices / Maxim Integrated MAXREFDES61 参考设计
美信 MAXREFDES60 参考设计带有 16 位、高精度四通道模拟输入，且有隔离的功率和数据。输入通道中有两个通道可接受 -10V 到 +10V 信号，另外两路输入支持 4mA 到 20mA 信号。MAXREFDES61 设计集成了一个双通道低噪声低失真缓冲器（MAX9633）；一个 16 位 4 通道多量程输入 ADC（MAX1301）；两个用于电流输入通道的高压 4-20mA 电流保护器（MAX14626）；一个超高精密度 4.096V 电压基准（MAX6126）；600VRMS 数据隔离器 (MAX14850)；一个 STM32F4 微控制器；一个 FTDI USB-UART 电桥ge; 和一个高效直流-直流转换器（MAX15062；及隔离式/稳压 +15V、+5V、和 -3V 电源轨（MAX17498C/MAX8719/MAX1659/MAX1735）。整个系统的典型功耗低于 500mW，封装尺寸类似于信用卡大小。MAXREFDES61 主要针对的是工业微型 PLC 应用，但也可以用于任何需要高精确模拟输出的应用。
The MAXREFDES61 design integrates a dual low-noise low-distortion buffer (MAX9633); a 16-bit 4-channel multirange input ADC (MAX1301); two high-voltage 4-20mA current protectors (MAX14626) for the current input channels; an ultra-high-precision 4.096V voltage reference (MAX6126); 600VRMS data isolation (MAX14850); a STM32F4 microcontroller; a FTDI USB-UART bridge; a high-efficiency DC-DC converter (MAX15062); and isolated/regulated +15V, +5V, and -3V power rails (MAX17498C/MAX8719/MAX1659/MAX1735).
The entire system typically operates at less than 500mW and fits into a space roughly the size of a credit card. While targeted for the industrial, Micro PLC application, MAXREFDES61 may be used in any application that requires high-accuracy analog-to-digital conversion.
特性
- High accuracy
- -10 to +10V ±20% voltage inputs
- 4 to 20mA +20% current inputs
- Isolated power and data
- Micro PLC form factor
- Device drivers
- Example C source code
- Test data
应用
- Industrial control and automation
- Process control
- PLC
Block Diagram
