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AH1888 - GENERAL-SENSITIVE HALL-EFFECT SWITCH

General Description

The AH1888 micro power Omni-polar Hall Effect switch IC designed for portable and battery powered equipment such as cellular phones, PDA’ s and portable PC’ s.

Key Features

  • Omni-polar (north or south pole) operation.
  • Single or dual output options.
  • Internal output pull up capability.
  • Micropower operation.
  • 1.65V to 3.3V operating range.
  • Chopper stabilized design provides.
  • Superior temperature stability.
  • Minimal switch point drift.
  • Enhanced immunity to stress.
  • Good RF noise immunity.
  • -40°C to 85°C operating temperature.
  • ESD (HBM)＞4KV for SOT553.
  • ESD (HBM)＞5KV for U-DFN2020-3 and U-DFN2020R-3.
  • Packa.

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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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PART OBSOLETE – NO ALTERNATE PART AH1888 MICROPOWER, GENERAL-SENSITIVE HALL EFFECT SWITCH Description The AH1888 micro power Omni-polar Hall Effect switch IC designed for portable and battery powered equipment such as cellular phones, PDA’ s and portable PC’ s. Based on two sensitive Hall Effect plates and chopper stabilized architecture the AH1888 provides a reliable solution over the whole operating range. To support portable and battery powered equipment the design has been optimized to operate over the supply range of 1.65V to 3.3V and consumes only 12.6µW with a supply of 1.8V. The outputs are switched with either a north or south pole of sufficient strength. When the magnetic flux density (B) is larger than operate point (Bop) the output is switched on.