Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS
AH41
General Description
The AH41 is an integrated Hall-effect latched sensor
designed for electronic commutation of brushless DC
motor applications. The device includes an on-chip
Hall voltage generator for magnetic sensing, a
comparator that amplifiers the Hall voltage, and a
Schmitt to provide switching hysteresis for noise
rejection and open-collector output. An internal
bandgap regulator is used to provide temperature
compensated supply voltage for internal circuits and
allows a wide operating supply range.
A north pole of sufficient strength will turn the output
ON. In the absence of a magnetic field, the output is
OFF.
This IC is available in TO-92S-3 package.
Features
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On-chip Hall Sensor
Wide Operating Voltage Range: 4V to 24V
Internal Bandgap Regulator for Temperature
Compensation
Maximum Output Sink Current: 50mA
Low Profile TO-92S-3
Operating Temperature: -40˚C to 150˚C
ESD Rating: 2000V (Human Body Model)
300V (Machine Model)
Application
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Brushless DC Motor
TO-92S-3
Figure 1. Package Type of AH41
Nov 2010
Rev. 1. 2
1
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
