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 to detect a zero current condition.
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