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AH920 Datasheet

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



Diodes Semiconductor Electronic Components Datasheet

AH920 Datasheet

HIGH SENSITIVITY CMOS HALL-EFFECT LATCH

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



Diodes Semiconductor Electronic Components Datasheet

AH920 Datasheet

HIGH SENSITIVITY CMOS HALL-EFFECT LATCH

No Preview Available !

AH920 pdf
Absolute Maximum Ratings (Note 1)
A Product Line of
Diodes Incorporated
AH920
Symbol
VCC
ICC
IOUT
PD
TA
TSTG
TJ (Max)
ESD
Parameter
Supply Voltage
Supply Current (Fault)
Output Current (Continuous)
Power Dissipation
Operation Temperature
Storage Temperature
Maximum Junction Temperature
ESD (Human Body Model)
Value
20
5
25
TO-92S-3
400
SOT-23-3
230
-50 to +150
-65 to +150
+165
6000
Unit
V
mA
mA
mW
ºC
ºC
ºC
V
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol
VCC
TA
Parameter
Supply Voltage
Operating Ambient Temperature
Min
Max
Unit
3.5 20 V
-40
+125
ºC
AH920
Document number: DS36768 Rev. 2 - 2
3 of 13
www.diodes.com
December 2013
© Diodes Incorporated




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