Vishay VOA300 linear optocoupler

The VOA300 linear optocoupler consists of an infrared emitter irradiating an isolated feedback and an output PIN photodiode in a bifurcated arrangement. The feedback photodiode captures a percentage of the LEDs flux and generates a control signal (I_P1) that can be used to servo the LED drive current. This technique compensates for the LED’s non-linear, time, and temperature characteristics.

Key features

• High gain linearity, ± 0.25 % typically
• Wide bandwidth, 1.4 MHz typically
• High gain stability, ± 0.005 %/°C typically
• High isolation voltage 5300 V_RMS

Additional features

• Faster response times
• Higher isolation voltage
• Transfer gain stability

Applications

• Galvanically isolated voltage and current sensing and current sensing of automotive batteries
• On board charger (OBC) voltage monitoring
• DC/DC converter and AC/DC inverter stage voltage monitoring
• Isolated signal transfer for temperature sensors