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Diodes Semiconductor Electronic Components Datasheet

AH1888 Datasheet

GENERAL-SENSITIVE HALL EFFECT

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AH1888 pdf
AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Description
Pin Assignments
The AH1888 micro power Omni-polar Hall Effect switch IC
designed for portable and battery powered equipment such as
cellular phones, PDA’ s and portable PC’ s. Based on two
sensitive Hall Effect plates and chopper stabilized architecture
the AH1888 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 1.65V to 3.3V and consumes only 12.6uW
with a supply of 1.8V.
The outputs are switched with either a north or south pole of
sufficient strength. When the magnetic flux density (B) is
larger than operate point (Bop) the output is switched on. 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 AH1888-ZG has two outputs, output one
pulls low when switched on and output two is inverted. The
AH1888-FJG provides output one and AH1888-FJRG
provides output two.
( Top View )
Output 2 1
5 Output1
GND 2
NC 3
SOT553
4 Vdd
( Top View )
3. GND
( Top View )
3. GND
1. Vdd
2. Output 1
DFN2020-3
1. Vdd
2. Output 2
DFN2020R-3
Features
• Omni-polar (north or south pole) operation
• Single or dual output options
• Internal output pull up capability
• Micropower operation
• 1.65V to 3.3V operating range
• 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)4KV for SOT553
• ESD (HBM)5KV for DFN2020-3 and DFN2020R-3
• Package: SOT553, DFN2020-3 and DFN2020R-3
• “Green” Molding Compound
Applications
• Cellular phone
• PDA
• Cordless phone
AH1888
Document number: DS31565 Rev. 6 - 2
1 of 11
www.diodes.com
August 2010
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1888 Datasheet

GENERAL-SENSITIVE HALL EFFECT

No Preview Available !

AH1888 pdf
AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Typical Application Circuit
(1) SOT553
Vdd
(2) DFN2020-3
Vdd
(3) DFN2020R-3
Vdd
AH1888
GND
Output 1
Output 2
AH1888
Output 1
GND
AH1888
Output 2
GND
Pin Descriptions
Pin Name
Vdd
GND
Output 1
Output 2
P/I/O
P/I
P/I
O
O
Description
Power Supply Voltage
Ground
Output Pin ( Active Low )
Output Pin ( Active High )
AH1888
Document number: DS31565 Rev. 6 - 2
2 of 11
www.diodes.com
August 2010
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1888 Datasheet

GENERAL-SENSITIVE HALL EFFECT

No Preview Available !

AH1888 pdf
Functional Block Diagram
(1) SOT553
Hall
Plate
Hall
Plate
AH1888
MICROPOWER, GENERAL-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Amp
Amp
Vdd
Power
switch
Latch
Logical
Latch
Output 1
GND
Vdd
Output 2
GND
(2) DFN2020-3
Hall
Plate
Hall
Plate
Amp
Amp
Vdd
Power
switch
Latch
Logical
Latch
Output 1
GND
(3) DFN2020R-3
Hall
Plate
Hall
Plate
Amp
Amp
Vdd
Power
switch
Latch
Logical
Latch
AH1888
Document number: DS31565 Rev. 6 - 2
3 of 11
www.diodes.com
Output 2
GND
August 2010
© Diodes Incorporated




Part Number AH1888
Description GENERAL-SENSITIVE HALL EFFECT
Maker Diodes Incorporated
Total Page 11 Pages
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