AH3135
These
Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications and high sensitivity, designed to operate continuously over extended temperatures to +150°C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet.
Each device includes a voltage regulator for operation with supply voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic Hall-voltage generator, temperature compensation circuitry, small-signal amplifier, Schmitt trigger, and an open-collector output to sink up to 25 mA. With suitable output pull up, they can be used with bipolar or CMOS logic circuits.
Absolute maximum rating
|
Parameter
|
Symbol
|
Value
|
Unit
|
|
Supply Voltage
|
VCC
|
24
|
V
|
|
Magnetic Flux Density
|
B
|
Unlimited
|
mT
|
|
Output OFF Voltage
|
Vce
|
40
|
V
|
|
Continuous Output Current
|
IOL
|
25
|
mA
|
|
Operating Temperature Range
|
TA
|
AH31XXE
|
-25~85
|
℃
|
|
AH31XXL
|
-40~150
|
℃
|
|
Storage Temperature Range
|
TS
|
-55~150
|
℃
|
Electrical Characteristics TA=25℃
|
Parameter
|
Symbol
|
Test condition
|
Type and Value
|
Unit
|
|
min
|
typ
|
max
|
|
Supply Voltage
|
VCC
|
4.5
|
-
|
24
|
V
|
|
Output Saturation Voltage
|
VOL
|
Iout=15mA B>BOP
|
-
|
200
|
400
|
mV
|
|
Output Leakage Current
|
IOH
|
Vout=24V B
|
-
|
0.1
|
10
|
μA
|
|
Supply Current
|
ICC
|
VCC=24V Output Open
|
-
|
-
|
10
|
mA
|
|
Output Rise Time
|
tr
|
RL=820Ω CL=20PF
|
-
|
0.12
|
-
|
μS
|
|
Output Fall Time
|
tf
|
RL=820Ω CL=20PF
|
-
|
0.18
|
-
|
μS
|
Magnet characteristics VCC=4.5～24V
|
Parameter
|
Symbol
|
AH3135
|
Unit
|
|
min
|
typ
|
max
|
|
Operate Point
|
BOP
|
-
|
-
|
11
|
mT
|
|
Release Point
|
BRP
|
3
|
-
|
-
|
mT
|
|
Hysteresis
|
BH
|
5
|
-
|
-
|
mT
|
