UNISONIC TECHNOLOGIES CO., LTD
UHE4913
LOW POWER HALL EFFECT
SWITCH
DESCRIPTION
CMOS IC
UHE4913
is a low-power integrated Hall switch designed to
sense the applied magnetic flux density and give a digital output,
which indicates the present condition of the magnitude sensed.
It is mainly designed for battery-powered system and
hand-held equipment, such as cellular flip-phones and PDA’s, in
which power consumption is one major concern. The typical power
consumption of UHE4913 is down to 10μW in 2.7V supply.
The output will be at the “High” level when no magnetic field is
applied. When the applied magnetic flux density is stronger than
the switching threshold, the output would be at the “Low” level.
FEATURES
* Micropower Operation
* 2.4V to 5.5V Battery Operation
* Switching for both poles of magnet
* Offset Canceling Technology
* Superior Temperature Stability
* Extremely Low Switch-Point Drift
* Insensitive to Physical Stress
ORDERING INFORMATION
Ordering Number
Package
SOT-23
G: GND
Pin Assignment
1
2
3
O
I
G
Packing
Tape Reel
UHE4913G-AE3-R
Note: Pin Assignment: O: Output
I: V
DD
MARKING
3
UEMG
2
1
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UHE4913
PIN CONFIGURATION
CMOS IC
PIN DESCRIPTION
PIN DESCRIPTION
PIN NAME
PIN TYPE
V
OUT
O
Digital Output
V
DD
I
Power Supply
GND
G
Ground
Note: O=Output, I=Power Supply, G=Ground
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Offset cancelling
Logic Control
AMP
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UHE4913
ABSOLUTE MAXIMUM RATING
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
DD
5.5
V
Supply current
I
Q
-1 ~ +2.5
mA
Magnetic Flux Density
B
Unlimited
mT
Junction Temperature
T
J
150
°C
Operation Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-40 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS
(
T
A
=25°C
)
SYMBOL
V
DD
V
OUT
T
A
CONDITIONS
Operating
MIN
2.4
-0.3
-40
TYP
2.7
2.7
25
MAX
5.5
5.5
85
UNIT
V
V
°C
PARAMETER
Supply Voltage
Output Voltage
Ambient Temperature
ELECTRICAL CHARACTERISTICS
(T
A
=25°C)
SYMBOL
V
SAT
I
OFF
I
DD(EN)
I
DD(DIS)
I
DD(AVG)
T
OP
T
SD
D.C.
t
R
t
F
CONDITIONS
V
DD
=2.7V
V
DD
=2.7V
MIN
TYP
0.1
0.01
1.1
2.5
3
50
130
0.04
0.5
0.1
MAX
UNIT
V
μA
mA
μA
μA
μs
ms
%
μs
μs
PARAMETER
Output Saturation Voltage
Output Leakage Current
Supply Current
Operating Time
Standby Time
Duty Cycle
Output Rise Time
Output Fall Time
20
V
DD
=2.7V
R
L
=2.7KΩ,C
L
=10
P
F
R
L
=2.7KΩ,C
L
=10
P
F
1
1
MAGNETIC CHARACTERISTICS
( T
A
=25°C,V
DD
=2.7V)
SYMBOL
|B
OP
|
|B
RP
|
|B
OP
–B
RP
|
MIN
20
12
2
TYP
35
27
8
MAX
50
42
16
UNIT
Gauss
PARAMETER
Operation Points
Release Points
Hysteresis
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UHE4913
TYPICAL APPLICATION CIRCUIT
CMOS IC
MAGNETIC FLUX
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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