应用功能： 4–20 mA Transmitter The AD694 is a monolithic current transmitter that acceptshigh level signal inputs to drive a standard 4–20 mA currentloop for the control ofvalves,actuators, and other devices commonlyused in process control. The input signal is buffered byan input amplifier that can be used to scale the input signal orbuffer theoutputfromacurrentmodeDAC.Precalibratedinputspans of 0 V to 2 V and 0 V to 10 V are selected bysimplepin strapping; other spansmaybeprogrammed with xternalresistor.
