A3212ELHLT-T Allegro Microsystems,, Omnipolar Hall Effect Sensor Switch, 2.5 → 3.5 V, 3-Pin SOT-23

Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
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
On back order for despatch 03/12/2020, delivery within 5 working days from despatch date.
Price (ex. GST) Each (On a Reel of 3000)
$ 1.219
(exc. GST)
$ 1.402
(inc. GST)
units
Per unit
Per Reel*
3000 +
$1.219
$3,657.00
*price indicative
Related Products
The ambient light sensor, VEML7700 has high accuracy ...
Description:
The ambient light sensor, VEML7700 has high accuracy based on the sensitive photodiode and 16-bit resolution analogue to digital converter. The surface mount package has a side view form. I²C serial communication interface. Operation voltage from 2.5 V to 3.6 ...
The AS5601 is an easy-to-program 12-bit On-Axis Magnetic ...
Description:
The AS5601 is an easy-to-program 12-bit On-Axis Magnetic Rotary Position Sensor with quadrature incremental and push button output. This contactless Encoder measures the absolute angle of a diametric magnetised on-axis magnet. Contactless angle measurement insensitive to dust and dirt. Simple ...
A range of Hall-effect magnetic sensors from Silicon ...
Description:
A range of Hall-effect magnetic sensors from Silicon Labs. The devices combine chopper-stabilized Hall elements, low-noise amplifiers, 13-bit ADCs and comparators to produce high precision magnetically activated switches. The device output changes state if the pre-programmed magnetic threshold is crossed, ...
A range of Hall-effect magnetic sensors from Silicon ...
Description:
A range of Hall-effect magnetic sensors from Silicon Labs featuring chopper-stabilized Hall elements, low-noise amplifiers and 13-bit ADCs which provide a linear outputs proportional to magnetic field strength. The Si721x series are available with analogue, PWM or SENT (Single Edge ...