述了一个简单的电路，转换成4-20mA信号到0V到5V的模拟电压转换到数字与模拟到数字转换器（ADC ）的理想。从传感器4毫安水平产生0V输出的20mA的水平产生5V输出。电流检测放大器产生这种模拟0V至5V输出。此外，该电路提供了一个比较，可以用来检测零电流条件下的输出。 Maxim > App Notes > A/D and D/A Conversion/Sampling Circuits Amplifier and Comparator Circuits Interface Circuits Sensors Keywords: 4-20mA transducers, 4-20mA translator, 4 to 20mA converter, A/D, ADC, a to d, analog digital, analog to digital converters, Nov 27, 2001 convertor APPLICATION NOTE 823 Two ICs Convert 4-20mA Signal to 0-5V Output Abstract:This design idea describes a simple circuit that converts a 4-20mA signal to a 0V to 5V analog voltage ideal for conversion to digital with an analog-to-digital converter (ADC). The 4mA level from the transducer produces a 0V output and the 20mA level produces a 5V output. A current sense amplifier generates this analog 0V to 5V output. In addition, the circuit provides a comparator output that can be used……