DESCRIPTION
The IL300 linear optocoupler consists of an AlGaAs IRLED 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 (IP1) that can be used to servo the LED drive current. This technique compensates for the LED’s non-linear, time, and temperature characteristics. The output PIN photodiode produces an output signal (IP2) that is linearly related to the servo optical flux created by the LED.

FEATURES
• Couples AC and DC signals
• 0.01 % servo linearity
• Wide bandwidth, > 200 kHz
• High gain stability, ± 0.005 %/°C typically
• Low input-output capacitance
• Low power consumption, < 15 mW
• Isolation rated voltage 4420 VRMS
• Internal insulation distance, > 0.4 mm

APPLICATIONS
• Power supply feedback voltage / current
• Medical sensor isolation
• Audio signal interfacing
• Isolated process control transducers
• Digital telephone isolation