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MAX49925 Datasheet Current-sense Amplifier

Manufacturer: Analog Devices

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General Description

The MAX49925 is a bidirectional current-sense amplifier (CSA) with an input common-mode range that extends from -40V to +76V, making it suitable for 48V HEV applications where there are large automotive transients.

This CSA has an extended input protection range of -42V to +80V against reverse-battery and highvoltage spikes.

The wider input protection range also helps relax TVS requirements, leading to lower BOM cost and reduced component size.

Key Features

  • Fast, 500ns PWM Edge Recovery from >500V/µs PWM Edges.
  • 140dB DC CMRR Rejection.
  • -40V to +76V Input Voltage Range.
  • -42V to +80V Protective Immunity.
  • 300kHz, -3dB Bandwidth.
  • On-the-fly Programmable Gain with two input pins: 10V/V, 20V/V, 50V/V, 100V/V.
  • 5μV (typ) Input Offset Voltage.
  • ±0.3% (max) Gain Error.
  • Rail-to-Rail Output.
  • 3mm x 3mm, 10-Pin TDFN with Side-Wettable Flanks.
  • -40°C to +125°C Temper.

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MAX49925 Distributor