The A3212ELHLT-T is a micropower ultra sensitive hall effect switch with latched digital output in 3 pin SOT2-3 package. Improved stability is made possible through chopper stabilization (dynamic offset cancellation) which reduces residual offset voltage normally caused by device over moulding, temperature dependencies and thermal stress. A 2.5V to 3.5V operation and unique clocking scheme reduce the average operating power requirements to less than 15µW with 2.75V supply. The A3212ELHLT-T includes hall voltage generator, small signal amplifier, chopper stabilization, latch and MOSFET output on a single silicon chip. Advanced BiCMOS processing is used to take advantage of low voltage and low power requirements, component matching, very low input offset errors and small component geometries.
Small size, solid state reliability
Supply current (IDD(AVG)) of 5.1µA at VDD = 2.75V
0.1% duty cycle
Chopping frequency (fc) is 340KHz
Superior temperature stability
Extremely low switchpoint drift
Insensitive to physical stress
High ESD protection
Easily assembly into applications due to magnetic pole independence
Operating ambient temperature range from -40°C to 85°C
