14-Bit, 4-20 mA, Loop Powered, Thermocouple Temperature Measurement System Using ARM Cortex-M3

May 07, 2014 // By Analog Devices
CIRCUIT FUNCTION AND BENEFITS The circuit shown in Figure 1 is a complete loop powered thermocouple temperature measurement system where the 4 mA-to-20 mA output current is controlled using the PWM function of a precision analog microcontroller.
ADI, Analog devices, Power