APD 3393 Potentiometer Input Signal Splitters

The APD 3393 IsoSplitter accepts a potentiometer input and provides two optically isolated DC voltage or current outputs that are linearly related to the input. The input range and each output range are independent and can be specified as required.

This provides an economical solution when one signal must be sent to two different devices. Typical applications include isolation, output splitting, output device separation and redundancy (i.e. to prevent failure of the entire loop if one device fails), or a combination of these. The voltage drop across a stable 1 VDC excitation source is measured allowing any full-range 3-wire potentiometer to be used. The input signal is filtered, amplified, split, and then passed through an opto-coupler to the output stages. Full 4-way isolation (input, output 1, output 2, power) make this module useful for ground loop elimination, common mode signal rejection, and noise pickup reduction.