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HCPL-7840

Part Number	HCPL-7840
Manufacturer	Broadcom
Description	Isolation Amplifier
Published	Feb 20, 2022
Detailed Description	HCPL-7840 Isolation Amplifier Data Sheet Description The Broadcom® HCPL-7840 isolation amplifier family is designed fo...
Datasheet	HCPL-7840 PDF File

Overview

HCPL-7840 Isolation Amplifier Data Sheet Description The Broadcom® HCPL-7840 isolation amplifier family is 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-7840.
A differential output voltage is created on the other side of the HCPL-7840 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 common-mode voltage swings of several hundred volts in tens of nanoseconds are common in modern s...

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