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AH1885

ULTRA-SENSITIVE HALL EFFECT


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AH1885 pdf
AH1885
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Description
Pin Assignments
AH1885 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
output1 on. The output1 will be turned off under no
magnetic field.
While the magnetic flux density (B) is larger than operate
point (Bop), the output1 will be turned on (low), the output1
is held until B is lower than release point (Brp), then turned
off.
( Top View )
Out 2 1
5 Out 1
GND 2
NC 3
4 Vdd
SOT553
Features
• 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
Typical Application Circuit
Vdd
Applications
• Cellular phone
• PDA
• Cordless phone
AH1885
Document number: DS31235 Rev. 4 - 2
AH1885
GND
Output 1
Output 2
(Complement
of Output 1)
1 of 7
www.diodes.com
September 2010
© Diodes Incorporated



No Preview Available !

AH1885 pdf
Pin Descriptions
AH1885
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
www.SDaWtaSITheCetH4U.com
Pin Name
Out 2
GND
NC
Vdd
Out 1
P/I/O
O
P/I
P/I
O
Pin #
1
2
3
4
5
Description
Output Pin (active High)
Ground
No Connection
Power Supply Voltage
Output Pin (active Low)
Functional Block Diagram
Vdd
Hall Plate
Amp
Power
switch
Latch
Out1
Hall Plate
Amp
Logical
Latch
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
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
AH1885
Document number: DS31235 Rev. 4 - 2
2 of 7
www.diodes.com
September 2010
© Diodes Incorporated



Part Number AH1885
Description ULTRA-SENSITIVE HALL EFFECT
Maker Diodes Incorporated - Diodes Incorporated
Total Page 7 Pages
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