Allegro MicroSystems A3230
The A3230 Hall-effect sensor is a temperature stable, stressresistant bipolar switch. This sensor is the most sensitive Hall-effect device in the Allegro® bipolar switch family and is intended for ring-magnet sensing. This method reduces the offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.| Part No. | A3230 |
|---|---|
| Datasheet | A3230 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Chopper-Stabilized Hall-Effect Bipolar Switch |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Chopper stabilization ▫ Superior temperature stability ▫ Extremely low switchpoint drift ▫ Insensitive to physical stress● Reverse battery protection
● Output short circuit protection
● Solid state reliability
● Small size
● Robust EMC capability
● High ESD ratings (HBM)
DESCRIPTION
Superior high-temperature performance is made possible through an Allegro patented dynamic offset cancellation that utilizes chopper-stabilization. The A3230 includes the following on a single silicon chip: a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output. Advanced BiCMOS wafer fabrication processing takes advantage of low-voltage requirements, component matching, very low input-offset errors, and small component geometries. Packages: 3 pin SOT23W (suffix LH), and 3 pin SIP (suffix UA) The A3230 Hall-effect bipolar switch turns on in a south polarity magnetic field of sufficient strength and switches off in a north polarity magnetic field of sufficient strength.
