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A1120EUA-T Allegro Microsystems, Unipolar Hall Effect Sensor Switch, 3-Pin SIP

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1000 In stock for delivery within 7 working day(s)
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Price (ex. GST) Each (In a Bag of 500)

$1.008

(exc. GST)

$1.159

(inc. GST)

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RS Stock No.:
170-9086
Mfr. Part No.:
A1120EUA-T
Manufacturer:
Allegro Microsystems
unitsPer unitPer Bag*
500 +$1.008$504.00
*price indicative

A1120/1/2/3/5 Chopper Stabilised Hall Effect Sensor Switches, Allegro Microsystems


The Allegro Microsystems A1120, A1121, A1122, A1123, and A1125 Hall-effect, unipolar switches are temperature-stable and stress-resistant sensor ICs. High temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over-molding, temperature dependencies, and thermal stress.

They include a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilisation, Schmitt trigger, and a short circuit protected open-drain output to sink up to 25 mA. The voltage regulator enables supply voltages of 3 V to 24 V.

For the A1120, A1121, A1122, and A1123, a south pole turns on the output and removal turns off the output. For the A1125, it is reversed and the south pole turns off the A1125 output.


Unipolar switchpoints
Resistant to physical stress
Superior temperature stability
Output short circuit protection
Operation from unregulated supply


Hall Effect Sensors, Allegro MicroSystems

AttributeValue
Magnetic TypeUnipolar
Mounting TypeThrough Hole
Pin Count3
Minimum Magnetic Sensor Release Point5 Gs
Maximum Magnetic Sensor Operating Point50 Gs
Minimum Operating Supply Voltage3 V
Maximum Operating Supply Voltage24 V
Length4.09mm
Width1.52mm
Height3.02mm
Dimensions4.09 x 1.52 x 3.02mm
Minimum Operating Temperature-40 °C
Maximum Operating Temperature+85 °C
Package TypeSIP
Typical Magnetic Sensor Hysteresis10 Gs