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AH180 Datasheet

MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH

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AH180
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Description
Pin Assignments
AH180 is a micro-power Omnipolar Hall-Effect switch
designed for portable and battery powered equipment such
cellular phones, PDAs and portable PCs. Based on two Hall-
Effect plates and a chopper stabilized architecture the AH180
provides a reliable solution over the whole operating range.
To support portable and battery powered equipment the
design has been optimized to operate over the supply range
of 2.5V to 5.5V and consumes only 24uW with a supply of 3V.
The single open-drain output switches on with either a north
or south pole of sufficient strength.
When the magnetic flux density (B) is larger than operate
point (Bop), output is switched on (Output pin is pulled low).
The output is turned off when B becomes lower than the
release point (Brp). The output will remain off when there is
no magnetic field.
The AH180 is available in SIP-3L, SC59, DFN2020-3, and
DFN2020-6 packages.
(Top View)
(SIP-3L)
3. Output
2. GND
1. Vdd
(Top View)
GND 2.
SC59
3. Output
1 . Vdd
(Top View)
6. NC 5. GND 4. NC
( Top View )
3. GND
Features
• Omnipolar (north or south pole) operation
• Micropower operation
• Single open drain output
• 2.5V to 5.5V operating voltage
• Chopper stabilized design provides
• Superior temperature stability
• Minimal switch-point drift
• Enhanced immunity to stress
• Good RF noise immunity
• -40°C to 85°C operating temperature
• ESD (HBM) 5KV for DFN2020-6, DFN2020-3
6KV for SIP-3L and SC59
• SIP-3L, SC59 (commonly known as SOT23 in Asia)
DFN2020-6, DFN2020-3 packages
• Green Molding Compound (No Br, Sb) (Note 1)
1. Vdd 2. NC 3. Output
DFN2020-6
1. Vdd
3. Output
DFN2020-3
Applications
• Cover switch in clam-shell cellular phones
• Cover switch in Notebook PC/PDA
• Contact-less switch in consumer products
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
AH180
Document number: DS31023 Rev. 17 - 2
1 of 13
www.diodes.com
July 2010
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

AH180 Datasheet

MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH

No Preview Available !

Typical Application Circuit
AH180
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
2.5~5.5V
C
AH180
Gnd
RL
Output
Note: C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
RL is the pull-up resistor, the recommended resistance is 10Kohm~100Kohm.
Pin Descriptions
Pin Name
Vdd
GND
Output
NC
P/I/O
P/I
P/I
O
NC
Description
Power Supply Input
Ground
Output Pin
No Connected
Functional Block Diagram
Vdd
Hall Plate
Hall Plate
Amp
Amp
Power
switch
Latch
Logical
Latch
Output
GND
AH180
Document number: DS31023 Rev. 17 - 2
2 of 13
www.diodes.com
July 2010
© Diodes Incorporated


Part Number AH180
Description MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR SWITCH
Maker Diodes Incorporated
Total Page 13 Pages
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