OH Series hall IC—OH9251
OH9251
Micropower CMOS Output Hall Effect Switch
General Description:
Part Number：OH9251
Temperature Range:-40 to 85°C
Package: 3000pcs/reel
OH9251 Hall-effect sensor is a temperature stable, stress-resistant,Low Tolerance of Sensitivity
micro-power switch. Superiorhigh-temperature performance is made possible through a dynamic offset
cancellation that utilizes chopper-stabilization. This method reduces the offset voltage normally caused
by device over molding, temperature dependencies, and thermal stress.
OH9251 is special made for low operation voltage, 1.65V, to active the chip which isincludes the
following on a single silicon chip:voltage regulator, Hall voltage generator, small-signal amplifier, chopper
stabilization, Schmitt trigger, CMOS output driver. Advanced CMOS wafer fabrication processing is used
to take advantage of low-voltage requirements, component matching, very low input-offset errors, and
small component geometries.This device requires the presence of omni-polarmagnetic fields for
operation.
The package type is in a Halogen Free version has been verified by third party Lab.
Features
Ø
Ø
Ø
Ø
CMOS Hall IC Technology
StrongRF noise protection
1.65to 6V for battery-powered applications
Omni polar, output switches with absolute value of North
or South pole from magnet
Ø
Ø
Ø
Ø
Ø
Ø
Ø
Operation down to 1.65V,Micro powerconsumption
Applications
Ø
Ø
Solid state switch
Handheld Wireless Handset Awake
Switch( Flip Cell/PHS Phone/Note
Book/Flip VideoSet)
Ø
Lid close sensor for battery powered
devices
Ø
Magnet proximity sensor for reed
switch replacement in low duty cycle
applications
Ø
Ø
Ø
Water Meter
Floating Meter
PDVD
High Sensitivity for reed switch replacement applications
Multi Small Sizeoption
Low sensitivity drift in crossing of Temp. range
Ultra Low power consumption at 5uA (Avg)
High ESD Protection, HBM> ±4KV( min )
Totem-pole output
Page
1
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-83247886，FAX: 86-25-52312738
China:
www.zbling.com
Global 1:
www.ohhallsensor.com
Global 2:
www.ohhall.com
Global 3:
www.ouzhuo.us
E-mail:
ouzhuo@zbling.com
sale@ohhallsensor.com
ohhall@163.com
support@ouzhuo.us
OH Series hall IC—OH9251
Absolute Maximum Ratings
（T
A
=25℃）
Supply Voltage VCC
··············
7 V
Output Voltage VOUT
··············
7 V
Storage Temperature
·············
-65 to 150 °C
Supply Current (Fault) ICC
··············
5 mA
Output Current IOUT
··············
1 mA
Junction Temperature
············
150 °C
Output Voltage vs. Magnetic Flux Density
Typical Application
Functional Block Diagram
NOTE：Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always
observe Electro Static Discharge control procedures whenever handling semiconductor products.
Page
2
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-83247886，FAX: 86-25-52312738
China:
www.zbling.com
Global 1:
www.ohhallsensor.com
Global 2:
www.ohhall.com
Global 3:
www.ouzhuo.us
E-mail:
ouzhuo@zbling.com
sale@ohhallsensor.com
ohhall@163.com
support@ouzhuo.us
OH Series hall IC—OH9251
Electrical Characteristics
Ta=25℃, VDD=1.8V
Value
Parameter
Supply Voltage
Symbol
V
CC
IAW
Conditions
Min
1.65
Awake
Sleep
Average
Output off
IOUT=0.5mA(Source)
IOUT=0.5mA(Sink)
OPERATING
OPERATING
40
40
0.1
HBM
4
-
-
-
VDD-0.2
Typ
-
1.4
3.6
5
-
-
Max
6
3
7
10
1.0
-
0.2
80
80
Unit
V
mA
µA
µA
µA
V
V
µs
ms
%
KV
Supply Current
ISL
IAVG
Output Leakage Current
Output HighVoltage,(VOH)
Output LowVoltage
Awake Mode Time
Sleep Mode Time
Duty Cycle
Electro-Static Discharge
Ioff
VOH
VOL
tAW
tSL
D
Magnetic Characteristics
Ta=25℃, VDD=1.8V (1mT = 10 Gauss)
Parameter
symbol
Conditions
South pole to branded side
Value
Min
Typ
30
Max
55
Unit
B
OPS
Operate Point
B
OPN
B>BOPS,VOUT=low(output on)
North pole to branded side
B>BOPN,VOUT=low(output on)
South pole to branded side
-55
GS
-30
GS
B
RPS
Release Point
B
RPN
Hysteresis
B
H
B<BRPS,VOUT=high(output off)
North pole to branded side
B<BRPN,VOUT=high(output off)
︱BOPX
- BRPX︱
10
20
GS
-20
-
10
-10
-
GS
GS
BOPX=operating point (output turns on);
BRPX=releasing point (output turns off)
Page
3
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-83247886，FAX: 86-25-52312738
China:
www.zbling.com
Global 1:
www.ohhallsensor.com
Global 2:
www.ohhall.com
Global 3:
www.ouzhuo.us
E-mail:
ouzhuo@zbling.com
sale@ohhallsensor.com
ohhall@163.com
support@ouzhuo.us
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