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HCPL-7840 - Isolation Amplifier

Description

The HCPL-7840 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-7840.

Features

  • deliver unequaled isolationmode noise rejection, as well as excellent offset and gain accuracy and stability over time and temperature. This performance is delivered in a compact, auto-insertable, industry standard 8-pin DIP package that meets worldwide regulatory safety standards. (A gull-wing surface mount option #300 is also available). Features.
  • 15 kV/μs common-mode rejection at V = 1000 V CM.
  • Compact, auto-insertable standard 8-pin DIP package.
  • 0.00025 V/V/°C gain drift.

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Datasheet Details

Part number HCPL-7840
Manufacturer Avago
File Size 151.27 KB
Description Isolation Amplifier
Datasheet download datasheet HCPL-7840 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HCPL-7840 Isolation Amplifier Data Sheet Lead (Pb) Free RoHS 6 fully compliant RoHS 6 fully compliant options available; -xxxE denotes a lead-free product Description The HCPL-7840 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-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.
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