The OP8320-3 board is used to clamp the current in both directions (source/sink) to prevent exceeding a device current rating, thus preventing damage to the device.
This board provides no customizable components. All settings are factory-configured.
Example of Bidirectional Current
D+ and D- are connected back to back so they clamp the current in either direction. The default setting is ±15mA. The current can be limited from 0.1mA to 18mA, using a current regulator diode, chosen according to your requirements.