A3212ELHLT-T Allegro Microsystems, Omnipolar Hall Effect Sensor Switch, 3-Pin SOT-23

Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): PH
Product Details

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

Specifications
Attribute Value
Magnetic Type Omnipolar
Mounting Type Surface Mount
Pin Count 3
Minimum Magnetic Sensor Release Point 10 Gs
Maximum Magnetic Sensor Operating Point 55 Gs
Minimum Operating Supply Voltage 2.5 V
Maximum Operating Supply Voltage 3.5 V
Length 2.98mm
Width 1.91mm
Height 0.95mm
Dimensions 2.98 x 1.91 x 0.95mm
Minimum Operating Temperature -40 °C
Maximum Operating Temperature +85 °C
Package Type SOT-23
Typical Magnetic Sensor Hysteresis 5.9 Gs
Available to back order for despatch 14/07/2020
Price Each (On a Reel of 3000)
£ 0.407
(exc. VAT)
£ 0.488
(inc. VAT)
Units
Per unit
Per Reel*
3000 +
£0.407
£1,221.00
*price indicative
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