AH431 單極磁感測器

Introduction

AH431, designed with Bipolar technology, includes on-chip Hall element voltage generator, a voltage regulator  for  operation  with  supply  voltages  of  3.8  to  60V,  temperature  compensation  circuitry, small-signal amplifier, Schmitt trigger and a switch controlled current source circuit.

The sensor is a 2-wire device designed to respond to South poles , the    output driver being    a current

source. The comparator compares the actual magnetic flux with the fixed reference values (switching points). The current source is switched on (high current consumption) or off (low current consumption) . The active offset compensation leads to constant magnetic characteristics over supply voltage and temperature range.

AH431 offers a variety of packages, including TO-92S, SOT-23. All packages are RoHS compliant.

Features
Digital current output

Miniature construction

High sensitivity of   85/60Gauss   (typ.)

Wide voltage range of 3.8 Vdc to 60 Vdc

Highest ESD performance up to ±6 kV

Temperature range of -40 °C to 125 °C

Applications
BLDC Motor Commutation

Flow sensor

Position sensor

Speed sensor

Proximity sensor

Package