The Broadcom series HCPL-7800A isolation amplifier family was designed for current sensing and voltage sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-7800A. A differential output voltage is created on the other side of the HCPL-7800A optical isolation barrier. This differential output voltage is proportional to the motor current and can be converted to a single-ended signal by using an op-amp.

15 kV/us Common-Mode Rejection at VCM = 1000 V
Compact, Auto-Insert able Standard 8-pin DIP Package
0.00025 V/V/ degrees C Gain Drift vs. Temperature
0.3 mV Input Offset Voltage
100 kHz Bandwidth
0.004% Nonlinearity
Worldwide Safety Approval:
UL 1577 (3750 Vrms/1 min.), CSA and IEC/EN/DIN EN 60747-5-2
Advanced Sigma-Delta (S-D) A/D Converter Technology
Fully Differential Circuit Topology
Options available are:
300 = Surface Mount Option
500 = Tape and Reel Packaging Option