OH137
Unipolar Hall Effect Switch IC
Order Information
PN
OH137
Operate temperature
-40½85℃
Package
1000pcs/bag
General Description
:
OH137 is a switched Hall-Effect IC which is for
Description:
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
Applications
½
4.5V to 24V DC operation voltage
½
Speed measurement
½
Open-Collector pre-driver
½
Home appliances
½
25mA maximum sinking output current.
½
Position detection
½
Reverse Polarity Protection
½
Flow measurement
Absolute Maximum Ratings
（T
A
=25℃）
Supply VoltageV
CC··············
4.5-24V
Operating Temperature Range T
A ···········
-40½85℃
Output Current I
O···················
25mA
Storage Temperature RangeT
S ················
-55½150℃
Magnetic-electrical Transfer Characteristics Functional Block Diagram
Diagram：
V
OUT
Pin1.V
CC
V
OH
B
H
REG
Pin3.Vout
AMP
m
V
OL
0
B
RP
B
OP
B
Pin2.GND
Electrical Characteristics
(Ta= 25°C )
Value
Parameter
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Symbol
V
CC
V
OL
I
OH
I
CC
t
r
t
f
Vcc=4.5V, RL=2KΩ，
B≥B
OP
Vout=Vccmax，B≤B
RP
V
CC
=Vccmax OC output
Vcc=12V, R
L
=820Ω,
C
L
=20pF
Page 1
www.ohhall.com
FAX: 86-25-52312738
Conditions
Min
4.5
-
-
-
-
-
Typ
-
200
1.0
3
0.12
0.14
Max
24
400
10
5
1.20
1.40
Unit
V
mV
μA
mA
μS
μS
Nanjing Ouzhuo Technology co., Ltd
Tel：86-25-52312738，86-25-83247886
www.zbling.com
E-mail: ohhall@163.com
OHHALLSENSOR [ Nanjing Ouzhuo Technology Co., Ltd. ]
