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.