The OP5353 features 32 optically isolated input channels that operate in the 4-50V voltage range.

Main Features

Channel Description

The optically isolated inputs accept a wide input voltage range, from 4 to 50 Volts. They have a low threshold current; typically 3.6 mA. Each input has reverse voltage protection of up to 30 Volts provided by a Schottky diode.

The schematic below represents the electrical circuit of one channel, from the Din+/Din- input signals coming for the unit under test (on the right) to the Din_FPGA signal going to the FPGA processor of the real-time simulator (on the left).


Typical Use Cases

The circuit makes it possible to use the module for activation or open-circuit detection, both in the high or low active state.

Typical high side activation (user high Dout)

Typical low side activation (user low Dout)

Typical high side open circuit detection

Typical low side open circuit detection




For compatibility of this card, please consult the Software compatibility and Hardware compatibility tables.