Features
Rated working voltage 4.5 V ~ 24 V, the limit voltages as low as 3.5 V;
Operating temperature range: -40ºC ~ 150ºC;
Rated output current(sink) : 25 mA, the maximum output current(sink): 50 mA
Switch response time is about 1μs, the operating frequency DC ~ 100 kHz;
Small temperature drift between operating point and release point;
There are variety of packages and out packing options;
No mechanical contact, no spark, switch signal stability, no shaking moment, high reliability and safety;
Products meet the EU RoHS instruction 2011/65 / EU and REACH regulations 1907/2006 / EU requirements
Outline
When the S pole of magnet faces the mark surface of the sensor and is closed to sensor(B≥Bop),the sensor outputs low level; When magnet is far away from sensor(B≤BRP), the sensor outputs high level. When the N pole faces the mark surface,the sensor is no response. Stable Hysteresis((BH= |BOP- BRP|)ensure the stable sensor's switch status. The magnet and electric transfer characteristic curve of AH441 is shown as the figure:
Hall sensor AH441 is one of unipolar excitation single-ended digital output Hall IC. The sensor chip has built-in reverse voltage protection, voltage regulators, temperature compensation circuit, Hall-voltage generator, signal amplifier, Schmitt trigger and open collector output drives circuit unit. Excellent voltage regulator and temperature compensation circuit ensure the sensor stable operates over a wide voltage range and temperature range, and the reverse voltage protection circuit avoids the sensor to be damaged by reverse voltage.
Limit Parameter
Parameter |
Symbol |
Min. |
Max. |
Unit |
Storage Temp. |
Ts |
-55 |
175 |
ºC |
Supply Voltage |
VCC |
3.5 |
28 |
V |
Output Cut-off Voltage |
VO(off) |
- |
25 |
V |
Magnetic Induction |
B |
unlimited |
unlimited |
mT |
Output Current |
IO |
- |
50 |
mA |
Electrostatic Grade
Under human being mode, the Electrostatic compression is large than ±6kV.
Operating Condition
Parameter |
Symbol |
Min. |
Max. |
Unit |
Supply Voltage |
VCC |
4.5 |
24 |
V |
Operating Temp. |
Ta |
-40 |
150 |
ºC |
Output Current |
IO |
- |
5 |
mA |
Electrical Characteristc
Paramater |
Symbol |
Test Condition |
Typ. |
Max |
Unit |
Output Low Level |
VOL |
VCC1=4.5, VCC2=24V, IO=25mA,B≥BOP |
0.2 |
0.4 |
V |
Output High Level |
VOH |
VCC1=4.5, VCC2=24V, IO=25mA,B≤BRP |
23.5 |
24 |
V |
Output Leakage current |
IOH |
VCC2=24V,VCC1Open Circuit |
0.1 |
10 |
μA |
Supply Current |
ICC |
VCC1=24V,Vo Open Circuit |
3.5 |
8 |
mA |
Output Rise Edge Time |
tR |
VCC1=VCC2=12V, RL=1.2kΩ, CL=20pF |
125 |
150 |
ns |
Output Fall Edge time |
tF |
60 |
80 |
ns |
Magnetic Characteristic
Test Condition :VCC1 = VCC2 =24V,IO = 50mA
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Operate Point |
BOP |
- |
10 |
12 |
Release Point |
BRP |
4 |
7 |
- |
Hysteresis ∣Operate point-Release point∣ |
BH ∣BOP-BRP∣ |
2 |
3.5 |
5 |
Note 1: Unit is mT, 1mT=10Gs
Note2: When the "S"Pole of the magnetic field is vertical to the front mark of product, we call the magnetic field B>0.
Note 3: For M type ( SOT23-3L) product, the operating magnetic field is subject to "N" pole.