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AH1887

ULTRA-SENSITIVE HALL EFFECT


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AH1887 pdf
AH1887
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Description
Pin Assignments
AH1887 is with two Hall effect plates and dual CMOS output
driver, mainly designed for battery–powered, hand-held
equipment (such as Cellular and Cordless Phone, PDA). The
total operation power is down to 15uW in the 1.8V supply.
Either north or south pole of sufficient strength will turn the
output on. The output will be turned off under no magnetic
field.
While the magnetic flux density (B) is larger than operate
point Bop(s), the output1 will be turned on (low), the output is
held until B is lower than release point Brp(s), then turned off
(high).
While the magnetic flux density (B) is larger than operate
point Bop(n), the output2 will be turned on (low), the output is
held until B is lower than release point Brp(n), then turned off
(high).
( Top View )
Out 2 1
5 Out 1
GND 2
NC 3
4 Vdd
SOT553
Features
Applications
• Micropower operation
• Operation with North or South Pole
• 1.65V to 3.3V battery operation
• Chopper stabilized
• Superior temperature stability
• Extremely Low Switch-Point Drift
• Insensitive to Physical Stress
• Good RF noise immunity
• -40°C to 85°C operating temperature
• ESD 4KV in human body mode
• Package: SOT553
• “Green” Molding Compound
• Cellular phone
• PDA
• Cordless phone
Typical Application Circuit
Vdd
AH1887
Document number: DS31313 Rev. 4 - 2
AH1887
GND
Output 1
Output 2
1 of 7
www.diodes.com
August 2010
© Diodes Incorporated



No Preview Available !

AH1887 pdf
Pin Descriptions
AH1887
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Pin Name
P/I/O Pin #
Description
Out 2
(Note 1)
GND
NC
Vdd
Out 1
(Note 1)
O
P/I
P/I
O
1 Output Pin ( active Low )
2 Ground
3 No Connection
4 Power Supply Voltage
5 Output Pin ( active Low )
Notes: 1. Output1 responds to South pole; Output2 responds to North pole.
Functional Block Diagram
Vdd
Hall Plate
Amp
Power
switch
Latch
Hall Plate
Amp
Logical
Latch
Out1
GND
Vdd
Out2
GND
Absolute Maximum Ratings (TA = 25°C)
Symbol
Vdd
B
TS
PD
TJ
Characteristics
Supply voltage
Magnetic flux density
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temperature
Recommended Operating Conditions (TA = 25°C)
Symbol
Vdd
TA
Parameter
Supply Voltage
Operating Temperature Range
Conditions
Operating
Operating
AH1887
Document number: DS31313 Rev. 4 - 2
2 of 7
www.diodes.com
Values
5
Unlimited
-65 to +150
230
150
Unit
V
°C
mW
°C
Rating
1.65 to 3.3
-40 to +85
Unit
V
°C
August 2010
© Diodes Incorporated



Part Number AH1887
Description ULTRA-SENSITIVE HALL EFFECT
Maker Diodes Incorporated - Diodes Incorporated
Total Page 7 Pages
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