HCPL-7800-500E AVAGO SOP8 进口 光电耦合器 Optically Isolated Amplifiers 4.5 - 5.5 SV 8 dB

The HCPL-7800(A) isolation amplifier family was designed
for current 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-7800(A). A differential output voltage is
created on the other side of the HCPL-7800(A) 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 as shown in
the recommended application circuit. Since commonmode voltage swings of several hundred volts in tens of
nanoseconds are common in modern switching inverter
motor drives, the HCPL-7800(A) was designed to ignore
very high common-mode transient slew rates (of at least
10 kV/μs).