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HCPL-7800

Avago
Part Number HCPL-7800
Manufacturer Avago
Description Isolation Amplifer
Published Apr 12, 2015
Detailed Description HCPL-7800A/HCPL-7800 Isolation Amplifer Datasheet Lead (Pb) Free RoHS 6 fully compliant RoHS 6 fully compliant options a...
Datasheet PDF File HCPL-7800 PDF File

HCPL-7800
HCPL-7800

Overview
HCPL-7800A/HCPL-7800 Isolation Amplifer Datasheet Lead (Pb) Free RoHS 6 fully compliant RoHS 6 fully compliant options available; -xxxE denotes a lead-free product Description 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).
The high CMR capability of the HCPL-7800...


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