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AH9249 - HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

General Description

The AH9249 is an ultra-sensitive Hall-effect switch with digital latched output, mainly designed for battery-operation, hand-held equipments.

Special CMOS process is used for low-voltage and low-power requirement.

A chopper stabilized amplifier improves stability of magnetic switch points.

Key Features

  • SOT-23-3 DFN-2×2-3.
  • 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 Pull-up Resistor.
  • ESD Rating: 4000V (Human Body Model) 600V (Machine Model).
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2).
  • Halogen and Antimony Free. “Green” Device (Note 3).

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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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NOT RECOMMENDED FOR NEW DESIGN USE AH9247 AH9249 HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH Description The AH9249 is an ultra-sensitive Hall-effect switch with digital latched output, mainly designed for battery-operation, hand-held equipments. Special CMOS process is used for low-voltage and low-power requirement. 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.