Description

The AH1802 is a high-sensitivity, micropower, omnipolar Hall Effect switch integrated circuit (IC) designed for portable and battery-powered equipment, such as cellular phones, PDAs, and portable PCs. Based on two sensitive Hall Effect plates and a chopper-stabilized architecture, the AH1802 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 2.5V to 5.5V and consumes only 24µW with a supply of 3V.

Features

● Omnipolar (North or South Pole) Operation

● 2.5V to 5.5V Operating Range

● High Sensitivity

● Single Open-Drain Output

● Micropower Operation

● 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 > 5kV for U-DFN2020-6, U-DFN2020-3 and X2- DFN2015-3

● ESD > 6kV for SC59

● Low Profile SC59, U-DFN2020-6, U-DFN2020-3 and X2-DFN2015-3 packages

● Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

● Halogen and Antimony Free. “Green” Device (Note 3)

Applications

● Open and Close Detect for Flip/Slide Cellular Phones

● Smart Cover or Dock Detect for Cellular Phones and Tablets

● Cover or Display Switch in Portable PCs (such as Ultrabook™)

● Display Switch for Portable PCs

● On/Off switch for PDAs and Digital Cameras

● Contactless Switch in Consumer Products