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AH9247 - MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

General Description

The AH9247 is a high sensitivity Hall-effect switch with internal pullup resistor on the output, designed for battery-operation, handheld equipments.

A chopper stabilized amplifier improves stability of magnetic switch points.

A sleep-awake logic controls the IC in sleep time or awake time.

Key Features

  • Micropower Operation.
  • 2.5V to 5.5V Power Supply.
  • Switching for Both Poles of a Magnet (Omnipolar).
  • Stabilized Chopper.
  • Superior Temperature Stability.
  • Digital Output Signal.
  • Built-in Pullup Resistor.
  • ESD (HBM): 6000V.
  • Small Low Profile DFN-2X2-3, Industry-Standard SC59 and TO92S (TYPE B) Packages.
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2).
  • Halogen and Antimony Free. “Green” Device (No.

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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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AH9247 HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH Description The AH9247 is a high sensitivity Hall-effect switch with internal pullup resistor on the output, designed for battery-operation, handheld equipments. A chopper stabilized amplifier improves stability of magnetic switch points. A sleep-awake logic controls the IC in sleep time or awake time. This function will reduce the average operating current of the IC. During the awake time, the output is changed with the magnetic flux density. During the sleep time, the output is latched in its previous state and the current consumption will reduce to some µA. The output can be switched on with either north or south pole of sufficient strength.