Complete Monolithic Current Transformer

AD694 converts a high-level voltage to a 0- or 4-20-mA current. Use it in process control loops and as a sensor transmitter

The AD694, a complete monolithic current transmitter, accepts high-level inputs and directly drives a single-ended 0- or 4-to-20-mA current loop. Included on-chip is an uncommitted buffer amplifier, a precision 2- or 10-volt programmable reference, a current-output driver with 4-mA offset, and an alarm circuit that detects an open 4-to-20-mA loop. Read full article



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Ian Bruce