AH3147 Unipolar, Ultra-Sensitive, Hall-Effect Switches
AH3147E、AH3147L is the magnetic sensor that consists of voltage regulator,hall voltage generator,
differential amplifier, Schmitt trigger and open collector output.When it detects the magnetic flux of density,it output
digital voltage singal.It is the magnetic-sensing circuit that works by unipolar,and suitable for the rectangle magnet and
the column magnet.Operating Temperature Range of AH3147L is -40~150 ℃ .It serves many applications within
automotive,automation and industrial electronics.They have two package types:TO-92UA and TO-92T。
FEATURES
TYPICAL APPLICATIONS
Wide Supply Voltage Range
Fast Response Time
Wide Frequency（DC~100KHz）
Long Operating Life, Small Size,Convenient
Installing
Direct connect with the transistor,TTL and MOS.
. Contactless Switch
. Speed Measurement .
. Brushless DC Motor
. Automotive Ignitor
.
Position Control
Isolation Measurement
Electric current sensor
Alarm system
.
ABSOLUTE MAXIMUM RATING
Parameter
Symbol
Value
Unit
Supply Voltage
VCC
24
V
Magnetic Flux Density
B
Output breakdown reverse voltage
Vce
40
V
Continuous Output Current
IOL
25
mA
AH3147L
TA
-40~150
℃
AH3147E
TA
-20~85
℃
150
℃
Operating
Temperature
Range
Storage Temperature Range
unlimited
TS
ELECTRICAL CHARACTERISTICS
mT
TA=25℃
Type and Value
Parameter
Symbol
Test condition
Unit
min
typ
max
4.5
-
24
V
Supply Voltage
VCC
Output Off Voltage
VOL
Iout=15mA B>BOP
--
200
400
mV
Output Current
IOH
Vout=24V B<BRP
--
0.1
10
μ A
Supply Current
ICC
VCC=24V Output
Open
--
-
10
mA
-
μ S
-
μ S
Output Rise Time
tr
RL=820Ω CL=20PF
--
0.12
Output Fall Time
tf
RL=820Ω CL=20PF
-
0.18
MAGNETIC CHARACTERISTICS
VCC=4.5～24V
Type and Value
Parameter
Symbol
Unit
min
typ
max
Operate Point
BOP
-
-
45
mT
Release Point
BRP
5.0
-
-
mT
Hysteresis
BH
3.0-
5
-
mT
1mT=10Gs
1
AH3147 Hall Switch
BLOCK DIAGRM
MAGNETIC-ELECTRICAL TRANSFER
CHARACTERISTICS
1,Vcc
Vout
REG
3,Vo
BH
BRP
2,GND
BOP
B
TYPICAL OPERATING CHARACTERISTICS as a function of temperature
Bop and Brp
Output Saturation Voltage
300
400
300
Vcc=4.5-24V
200
BOP
BRP
100
Vcc=8V
0
-50
0
-25
0
25
50
75
100
125
-50
Temperature Ta (℃)
Package
-25
0
25
50
75
100
Temperature Ta (℃)
(unit：mm)
1.5 +0.1
4.06±
0.10
1.96
0.8
0.34
Depth
Branded
0.43
surface
0.38
Lead Designator
1. SUPPLY
2. GROUND
0.38
1
2
3
3. OUTPUT
1.27
2.34
45
TO-92UA Package and active area
Cautions
1. When install, should as full as possible decrease the mechanical stress acting on the Hall IC, to avoid the influence of
the operate point and release point.
2. On the premise of ensuring welding quality, use as possible as low welding temperature and short time.
AH3147 Hall Switch
125