UNISONIC TECHNOLOGIES CO., LTD
UH8105
Hall Effect Micro Switch IC
DESCRIPTION
CMOS IC
The
UH8105
is a low power, pole independent Hall-effect
switch with a latched digital output driver. It can work in 2.5 volt
supply. Either a north or south pole of sufficient flux will turn the
output on; in the absence of a magnetic field, the output is off.
When a magnetic field enters the hall element and exceeds
the operate point B
OPS
(or less than B
OPN
) the output turns on
(output is low). When the magnetic field is below the release point
B
RPS
(or above B
RPN
), the output turns off (output is high).
FEATURES
*Micropower operation
*2.5V to 5.0V battery operation
*Offset Canceling Technology
*Independent of North or South Pole Magnet,
*Superior temperature stability
*Extremely Low Switch-Point Drift
APPLICATIONS
*Micro Switch
*Handheld Wireless Application Wake Up Switch
*Clamp Shell Type Application Switch
*Magnet Switch in Low Duty Cycle Applications
ORDERING INFORMATION
Ordering Number
Package
SOT-23
SIP-3
SIP-3
Pin Assignment
1
2
3
O
I
G
I
G
O
I
G
O
Packing
Tape Reel
Tape Box
Bulk
UH8105G-AE3-R
UH8105G-G03-B
UH8105G-G03-K
Note: Pin Assignment : O: Output I: V
DD
G: GND
MARKING
SOT-23
SIP-3
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Copyright © 2015 Unisonic Technologies Co., Ltd
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UH8105
PIN CONFIGURATIONS
CMOS IC
SOT-23
SIP-3
PIN DESCRIPTION
PIN NAME
TYPE
DESCRIPTION
Output
O
Output
V
DD
P/I
Power Supply Input
GND
P
Ground
Note: P: power supply, I: input, O: output
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Offset Cancelling
Logic Control
AMP
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UH8105
ABSOLUTE MAXIMUM RATING
(T
A
=25°C)
SYMBOL
B
V
DD
I
O
PARAMETER
Magnetic Flux Density
Supply Voltage
Output Current
CMOS IC
RATINGS
UNIT
Unlimited
mT
5.5
V
1
mA
SIP-3
400
mW
Power Dissipation
P
D
SOT-23
200
mW
Maximum Junction Temp
T
J
150
°C
Operation Temperature
T
OPR
-40 ~ +85
°C
Storage Temperature
T
STG
-65 ~ +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
T
A
Conditions
Operating
MIN
2.5
-40
TYP
-
MAX
5.5
85
UNIT
V
°C
PARAMETER
Supply Voltage
Ambient Temperature
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, V
DD
=3V)
SYMBOL
V
DD
I
DD
I
OFF
V
OL
V
OH
t
AWAKE
t
PERIOD
d.c.
CONDITIONS
Operating
Average
Awake
Sleep
Vout = 5.5V, B
RPN
<B<B
RPS
I
SINK
= 1mA
MIN
2.5
TYP
5
1.2
2
20
V
OUT
-0.4V
60
60
0.1
MAX
5.5
10
2
8
1
40
UNIT
V
uA
mA
uA
uA
mV
V
uS
mS
%
PARAMETER
Supply Voltage Range
Supply Current
Output Leakage Current
Output Low Voltage
Output High Voltage
Wake up Time
Period
Duty cycle
MAGNETIC CHARACTERISTICS
(T
A
=25°C, V
DD
=3V, 1mT=10Gauss)
SYMBOL
B
OPS
B
OPN
B
RPS
B
RPN
B
hys
MIN
15
-45
10
-40
TYP
30
-30
20
-20
10
MAX
45
-15
40
-10
UNIT
PARAMETER
Operation Points
Release Points
Hysteresis
Gauss
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UH8105
TYPICAL CIRCUIT
CMOS IC
SIP-3
3
GND
V
DD
2
2
V
OUT
1
Digital Output
0.1uF
2.5~5.5V
SOT-23
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UH8105
MAGNETIC FLUX
CMOS IC
Output Voltage
Output
OFF-state
OFF-state
Turn on
Turn off
Turn off
Turn on
ON-state
0
ON-state
B
OPN
B
RPN
B
RPS
B
OPS
B
SOT-23 / SIP-3
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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