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AH920

HIGH SENSITIVITY CMOS HALL-EFFECT LATCH



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AH920 pdf
A Product Line of
Diodes Incorporated
Description
The AH920 is a Hall-effect latch designed in mixed signal CMOS
technology. It is quite suitable for use in automotive, industrial and
consumer applications.
Superior high-temperature performance is made possible through
dynamic offset cancellation, which reduces the residual offset voltage
normally caused by device over-molding, temperature dependencies,
and thermal stress. The device integrates a voltage regulator, Hall-
voltage generator, small-signal amplifier, chopper stabilization, schmitt
trigger, and open-drain output.
An on-board regulator permits operation with supply voltage from
3.5V to 20V.
The AH920 is available in TO-92S-3 and SOT-23-3 packages, which
are optimized for most applications.
AH920
HIGH SENSITIVITY CMOS HALL-EFFECT LATCH
Pin Assignments
(Front View)
3 OUT
2 GND
1 VCC
TO-92S-3 (Z3 Package)
(Top View)
GND
3
Features
Wide Operating Voltage Range from 3.5V to 20V
Symmetrical Switch Points
Chopper-stabilized Amplifier Stage
Superior Temperature Stability
Open-drain Output
Compact Size
ESD Rating: 6000V (Human Body Model)
Typical Applications Circuit
VCC1
RL
Output
CL
0.1mF
VCC2
1
VCC
2
OUT
SOT-23-3 (N Package)
Applications
Brushless DC Motor Commutation
Brushless DC Fan
Solid-state Switch
Revolution Counting
Speed Detection
High Sensitivity and Unconnected Switch
Output
RL
VCC
CL
0.1mF
AH920
Document number: DS36768 Rev. 2 - 2
1 of 13
www.diodes.com
December 2013
© Diodes Incorporated



No Preview Available !

AH920 pdf
Pin Descriptions
Pin Number
TO-92S-3
SOT-23-3
11
23
32
A Product Line of
Diodes Incorporated
AH920
Pin Name
VCC
GND
OUT
Supply voltage
Ground pin
Output Pin
Function
Functional Block Diagram
VCC
1 (1)
Reference Voltage
Hall Sense
Chopper
Switch
AMP
A (B)
A for TO-92S-3
B for SOT-23-3
2 (3)
GND
OUT
3 (2)
AH920
Document number: DS36768 Rev. 2 - 2
2 of 13
www.diodes.com
December 2013
© Diodes Incorporated



Part Number AH920
Description HIGH SENSITIVITY CMOS HALL-EFFECT LATCH
Maker Diodes - Diodes
Total Page 13 Pages
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