Diodes AH41 User Manual
BIPOLAR HALL-EFFECT POSITION SENSORS AH41
Data Sheet
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
On-chip Hall Sensor
•
• Wide Operating Voltage Range: 4V to 24V
• Internal Bandgap Regulator for Temperature
Compensation
• Maximu m Output Sink Current: 50mA
• Low Profile TO-92S-3
• Operating Temperature: -40˚C to 1 50˚C
• ESD Rating: 2000V (Human Body Model)
300V (Machine Model)
Application
• Brushless DC Motor
TO-92S-3
Figure 1. Package Type of AH 41
Nov 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
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Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS AH41
Pin Configuration
Z3 Package
(TO-92S-3)
Figure 2. Pin Configuration of AH41 (Front View)
Pin Description
Pin Number Pin Name Function
1 VCC Power supply pin
2 GND Ground pin
3 OUTPUT Output pin. It is low during the N magnetic field
Nov 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
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Data Sheet
BIPOLAR HALL-EFFECT POSITION SENSORS AH41
Functional Block Diagram
Figure 3. Functional Block Diagram of AH41
Ordering Information
AH41 -
Circuit Type
Package
Z3: TO-92S-3
G1: Green
Magnetic Characteristics
A: 30 to 75 Gauss
B: 5 to 105 Gauss
Package Temperature Range Part Number Marking ID Packing Type
TO-92S-3
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
-40 to 150°C
AH41Z3-AG1 AH41 Bulk
AH41Z3-BG1 AH41 Bulk
Nov 2010 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
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