Abstract: Based on a precision op amp (MAX4236), this loop-powered, high-compliance, precision current sink (or source) can be modified for use as a 4–20mA sink transmitter. Maxim > App Notes > Amplifier and Comparator Circuits Keywords: current-loop transmitter, loop calibrator, sink/source calibrator, precision op amps Jan 31, 2011 APPLICATION NOTE 4573 Precision Current-Transmitter/Source-Sink Calibrator Has Wide Compliance Range Abstract:Based on a precision op amp (MAX4236), this loop-powered, high-compliance, precision current sink (or source) can be modified for use as a 4……