Hall Effect Sensor Manufacturer-Nanjing AH Electronic Science & Technology Co., Ltd.

Unipolar Hall IC
Unipolar Hall IC

Note: the data are typical values, the test voltage of supply current is 5.5V, and the ambient temperature is 25 ℃.

Type Manufacturing Techniques Output State Package Supply Curent
(mA)
Load
(mA)
Operating Voltage
(V)
BOP
(mT)
BRP
(mT)
BH
(mT)
Operating Temperature
(℃)
AH3131 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 3.0 1.5 1.5 -40~150
AH3132 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 4.5 2.5 2.0 -40~150
AH3133 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 6.0 3.0 3.0 -40~150
AH3134 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 9.0 5.0 4.0 -40~150
AH3134R Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 9.0 5.0 4.0 -40~150
AH3144 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 15.0 10.0 5.0 -40~150
AH3145 Bipolar Open collector SOT23/SOT89/TO92 4 25 4.5~24 25.0 17.0 5.0 -40~150


The unipolar Hall-effect sensor includes the following on a single silicon chip: reverse voltage protector, voltage regulator, temperature compensation circuit, Hall-voltage generator, signal amplifier, Schmitt trigger and open-collector output driver, etc. The integrated voltage regulator and temperature compensation circuit ensure that the sensor works stably in a wide voltage and temperature range. The reverse voltage protection circuit prevents the sensor from being damaged by reverse voltage.

Produced with bipolar technology, a unipolar Hall IC is more stable and reliable. It is available in three package types: SOT-23-3L (Type M), SOT-89 (Type S), and TO-92UA (Type UA). Each package is lead (Pb) free, with 100% matte tin plated leadframes. 


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North Pole Active

When the N pole of the magnet faces the mark surface of the sensor and is close to it (B≥BOP), the sensor outputs a low level; when the N pole is away from the sensor (B≤BRP), it outputs a high level. The sensor does not respond when the S pole faces its mark surface. The stable hysteresis (BH = | BOP - BRP |) ensures that the sensor switch is stable. 

Note: the SOT-23-3L package is north pole active, and the SOT89 and TO92UA package are south pole active.

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