UNISONIC TECHNOLOGIES CO., LTD UH8100

UNISONIC TECHNOLOGIES CO., LTD
UH8100
CMOS IC
LOW POWER HALL EFFECT
SWITCH
3
DESCRIPTION

UH8100 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 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
UH8100 is down to 15uW at 2.75V supply.
For UH8100, the output will be high when no magnetic field is
applied and be low when the applied magnetic flux density is stronger
than the switching threshold. The difference between UH8100A and
UH8100B is that UH8100A consumes less power than UH8100B in the
Hall sensor operation.
1
2
SOT-23
(EIAJ SC-59)
FEATURES

* Micro power Operation
* 2.5V to 5.5V Battery Operation
* Offset Canceling Technology
* Superior Temperature Stability
* Extremely Low Switch-Point Drift
* Insensitive to Physical Stress

ORDERING INFORMATION
Ordering Number
Note:

UH8100AG-AE3-R
UH8100BG-AE3-R
Pin Assignment: O: VOUT, I: VDD, G: GND
Package
SOT-23
SOT-23
Pin Assignment
1
2
3
O
I
G
O
I
G
Packing
Tape Reel
Tape Reel
MARKING
UH8100A
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Copyright © 2015 Unisonic Technologies Co., Ltd
UH8100B
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UH8100
CMOS IC

PIN CONFIGURATIONS

PIN DESCRIPTION
PIN NAME
PIN TYPE
PIN DESCRIPTION
VOUT
O
Digital Output
VDD
P
Power Supply
GND
G
Ground
Note: O=Output, P=Power Supply, G=Ground

BLOCK DIAGRAM
OUTPUT
VDD
L o g i c Co n t r o l
A MP
O f f s et C a n c e l l i n g
Hall Plate
GND
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QW-R502-413.E
UH8100

CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Magnetic Flux Density
B
Unlimited
mT
Supply Voltage
VDD
7
V
Output Current
IO
10
mA
Package Power Dissipation
PD
230
mW
Junction Temperature
TJ
150
°C
Operation Temperature
TOPR
-40 ~ +85
°C
Storage Temperature
TSTG
-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 (TA=25°C)
PARAMETER
Supply Voltage

SYMBOL
VDD
MIN
2.5
TYP
MAX
5.5
UNIT
V
MIN
TYP
0.1
0.01
5
280
50
50
200
0.1
25
MAX
0.3
1
10
500
100
100
400
UNIT
V
uA
uA
uA
us
ms
us
%
%
ELECTRICAL CHARACTERISTICS (TA=25°C)
PARAMETER
Output On Voltage
Output Leakage Current
SYMBOL
VOUT
IOFF
Supply Current
IDD(AVG)
Awake Time
TAWAKE
Period
TPERIOD
Duty Cycle

CONDITIONS
Operating
D.C.
CONDITIONS
VDD=3V, IOUT=1mA
VDD=3V, VOUT=5.5V, B<BRP
UH8100A
VDD=3V,
average supply current
UH8100B
VDD=3V
VDD=3V,UH8100A
VDD=3V,UH8100B
VDD=3V,UH8100A
VDD=3V,UH8100B
MAGNETIC CHARACTERISTICS ( TA=25°C, VDD=3V)
PARAMETER
Operation Points
Release Points
Hysteresis
SYMBOL
|BOP|
|BRP|
|BOP–BRP|
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
10
TYP
40
30
10
MAX
60
UNIT
Gauss
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UH8100

CMOS IC
TYPICAL APPLICATION CIRCUIT
3
GND
VDD
OUTPUT
2
1
Digital Output
Pull up resistor
(Reconmand 50K)
2.5~5.5V
MAGNETIC FLUX
Output
OFF-state
Output Voltage

Turn off
Turn on
ON-state
0
BRP
BOP
B
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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