A3212LLHLT

Hall Effect Sensor 1mA Latch 2.75V 3Pin SOT-23W T/R

MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH

The A3212 integrated circuit is an ultra-sensitive, pole in de pendent Hall effect switch with a latched digital output. This sensor is es pe cial ly suited for operation in battery-operated, hand-held equip ment such as cellular and cordless tele phones, pagers, and palmtop com put ers. A 2.5 volt to 3.5 volt operation and a unique clocking scheme reduce the average operat ing power requirements to less than 15 µW with a 2.75 volt supply.

FEATURES

■ Micropower Operation

■ Operation with North orSouth Pole

■ 2.5 V to 3.5 V Battery Operation

■ Chopper Stabilized

   Superior Temperature Stability

   Extremely Low Switch-Point Drift

   Insensitive to Physical Stress

■ ESD Protected to 5 kV

■ Sol id-State  Reliability

■ Small Size

■Easily Manufacturable with Magnet Pole Independence