User Manual
The FOD2742 is a Fairchild Semiconductor Corporation's optically isolated error amplifier. It combines the KA431 precision programmable shunt reference and an optocoupler. The product has a 2.5V reference, CTR 100% to 200%, 2500V RMS isolation, UL, BSI, VDE, CSA approvals, low temperature coefficient 50 ppm/°C maximum, 0.5%, 1% and 2% tolerance. It is mainly used for isolated ac to dc power supplies and dc/dc converters error amplifier/reference voltage/optocoupler function.
User Manual
The FOD2742 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide (GaAs) light emitting diode optically coupled to a silicon phototransistor. It comes in 3 grades of reference voltage tolerance = 2%, 1%, and 0.5%. The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding temperature coefficient of 50 ppm/°C. It is primarily intended for use as the error amplifier/reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc converters. When using the FOD2742, power supply designers can reduce the component count and save space in tightly packaged designs. The tight tolerance reference eliminates the need for adjustments in many applications. The device comes in a 8-pin small outline package.
User Manual
The FOD2742 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. It comes in 3 grades of reference voltage tolerance = 2%, 1%, and 0.5%. The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding temperature coefficient of 50 ppm/°C. It is primarily intended for use as the error amplifier/reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc converters.
