Allegro Microsystems A3212ELHLT-T Hall Effect Sensor Switch 1 mA SOT-23 3 Pins 2.5 V 3.5

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

Applications

Sensing & Instrumentation, Consumer Electronics, Portable Devices

Warnings Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Other details

Brand	ALLEGRO MICROSYSTEMS
Part Number	A3212ELHLT-T
Quantity	Each (Supplied on Cut Tape)
Technical Data Sheet EN
Product Change Notice EN

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