Allegro Microsystems Surface Hall Effect Sensor 2.5 V 3.5 V, SOT-23, 3-Pin

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RS-artikelnummer:
172-9254
Tillv. art.nr:
A3212ELHLT-T
Tillverkare / varumärke:
Allegro Microsystems
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Brand

Allegro Microsystems

Sensor Type

Hall Effect Sensors

Product Type

Hall Effect Sensor

Technology

CMOS, Chopper Stabilised

Mount Type

Surface

Magnetic Type

Omnipolar

Maximum Frequency Response

340kHz

Minimum Supply Voltage

2.5V

Package Type

SOT-23

Maximum Supply Voltage

3.5V

Minimum Operating Temperature

-40°C

Maximum Operating Temperature

85°C

Pin Count

3

Standards/Approvals

AEC-Q100

Width

1.91 mm

Length

2.98mm

Height

0.95mm

Series

A3211A3212

Automotive Standard

AEC-Q100

Supply Current

2mA

Response Time

45μs

A3211/2 Micropower, Ultra Sensitive Hall Effect Switches, Allegro Microsystems


The A3211/2 are ultrasensitive, pole independent, Hall-effect switches with latched digital output. Their 2.5 V to 3.5 V operation and unique clocking scheme reduces the average operating power to less than 15 μW with a 2.75 V supply.

Either a north or south pole turns on the output in the A3212 and removing the magnetic field turns the output is off. This is reversed on the A3211.

Chopper stabilisation improves stability which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.

Included on the chip is a Hall-voltage generator, small-signal amplifier, chopper stabilisation, a latch, and a MOSFET output.

Hall Effect Sensors, Allegro MicroSystems


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