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Nanjing Ouzhuo Technology
Nanjing Ouzhuo Technology


OH137

Unipolar Hall Effect Switch IC



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OH137 pdf
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OH137
Unipolar Hall Effect Switch IC
Order Information
PN OH137
Operate temperature -4085Package 1000pcs/bag
General Description: OH137 is a switched Hall-Effect IC which is for
contactless switching applications. The device includes an on-chip Hall
voltage generator for magnetic sensing, an amplifier that amplifies the Hall
voltage, a schmitt trigger to provide switching hysteresis for noise rejection,
and an open-collector output.
Features
4.5V to 24V DC operation voltage
Open-Collector pre-driver
25mA maximum sinking output current.
Reverse Polarity Protection
Absolute Maximum Ratings TA=25℃)
Applications
Speed measurement
Home appliances
Position detection
Flow measurement
Supply VoltageVCC··············4.5-24V Operating Temperature Range TA ···········-4085
Output Current IO···················25mA
Storage Temperature RangeTS ················-55150
Magnetic-electrical Transfer Characteristics
VOUT
VOH
Functional Block Diagram
Pin1.VCC
BH REG
mAMP
VOL
Pin3.Vout
0 BRP BOP B
Electrical Characteristics (Ta= 25°C )
Parameter
Symbol
Conditions
Pin2.GND
Value
Unit
Min Typ Max
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
VCC
VOL
IOH
ICC
Vcc=4.5V, RL=2KΩ
B≥BOP
Vout=VccmaxB≤BRP
4.5 - 24 V
- 200 400 mV
- 1.0 10 μA
VCC=Vccmax OC output - 3 5 mA
Output Rise Time
tr
Vcc=12V, RL=820Ω,
- 0.12 1.20 μS
Output Falling Time
tf
CL=20pF
- 0.14 1.40 μS
Page 1
Nanjing Ouzhuo Technology co., Ltd
www.ohhallsensor.com
Tel86-25-83247886FAX: 86-25-52312738 E-mail: yan-li@vip.163.com
www.zbling.com
ohhall@163.com



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OH137 pdf
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OH137
Unipolar Hall Effect Switch IC
Magnetic Characteristics (Ta= 25°C ) (1mT = 10 Gauss)
Value
Parameter
symbol
Min Typ
Operate Point
BOP
-
-
Release Point
BRP
2
-
Hysteresis
BH
6
-
Max
18
-
8
Unit
mT
mT
mT
Test Circuit for Reference
Vcc
RL
RL=820Ω
CL=20 pF
Dimension
CL
Pin Descriptions1.VCC 2. GND 3.Vout
Caution:
1)when installing, please minimize mechanical
stress on the IC shell and leads.
Vout 2)Welding temperature should be lower than 260
, less than 3 seconds.
3)IC is OC output, so a pull-up resistor connected
pin 1 (power) and pin 3 (output) is necessary.
Page 2
Nanjing Ouzhuo Technology co., Ltd
www.ohhallsensor.com
Tel86-25-83247886FAX: 86-25-52312738 E-mail: yan-li@vip.163.com
www.zbling.com
ohhall@163.com



Part Number OH137
Description Unipolar Hall Effect Switch IC
Maker Nanjing Ouzhuo Technology - Nanjing Ouzhuo Technology
Total Page 2 Pages
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