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Micropower Hall Sensor AH3662
  • Micropower Hall Sensor AH3662
  • Micropower Hall Sensor AH3662
Micropower Hall Sensor AH3662 Micropower Hall Sensor AH3662

Micropower Hall Sensor AH3662

    ◆ Features

    Micropower designing;

    Rated supply voltage  2.4 V ~ 5.5 V;

    Omnipolar operating, no “N” or “S” pole in excitation magnetic field, high magnetic sensitivity, highly symmetry in positive and negative magnetic switch point;

    Built-in dynamic imbalance voltage compensition circuit, high temperature stability, Small temperature drift in switch point, resistant to mechanical stress and thermal stress, the power consumption is only 8μW when the power supply is 2.75V;

    Built-in pull-up resistor;

    Products meet the EU RoHS instruction 2011/65 / EU and REACH regulations 1907/2006 / EU requirements.

PRODUCTS DETAILS

◆ Outline

AH3662 is a kind of high sensitivity omnipolar micropower Hall sensor. The special designing circuit enable the sensor has omnipolar (no “S” or “N” pole) magnetic field excitation function, excellent positive and negative switch symmetry, and bitty average power consumption current. When the magnet (no “S” or “N” pole) is closed to sensor(︱B︱≥︱Bop︱),the sensor outputs low level; when the magnet is far away from sensor ︱B︱≤︱Brp︱), the sensor outputs high level. Stable Hysteresis(Bhx =︱Bopx- Brpx︱) ensure the sensor’s stable switch status, the sensor’s magnetic and electric transfer characteristic curve is shown as the figure:

微功耗霍尔传感器AH3662

◆ Block Diagram

1.jpg

The sensor chip has voltage regulators, Hall-voltage generator, dynamic imbalance voltage compensator, temperature compensator, awake/sleep controller, difference amplifier, Schmitt trigger, logic controler , built-in pull-up resistor (R= 100 kΩ), and open collector output driver circuit unit etc. 


◆ Sleep Period

The chip has built-in awake/sleep clock control circuit, and its awake/sleep period time is shown in the figure:

2.jpg


◆ Limit Parameter

ParametersymbolMin.Max.Unit
Storage Temp.Ts-55150
Supply VoltageVCC2.47V
Permitted Power Consumptionpd300mW
Magnetic InductionBunlimitedunlimitedmT
Output CurrentIO5mA


◆ Electrostatic Grade

Under human being mode, the Electrostatic compression is large than ±6kV.


◆ Operating Condition

ParameterSymbolMin.Max.Unit
Supply VoltageVCC2.45.5V
Operating Temp.Ta-4085
Output CurrentIO5mA


◆ Electrical Characteristc

ParamaterSymbolTest ConditionTyp.MaxUnit
Output    Low LevelVOLVCC1= VCC2=2.75V, IO=1mA,BBOP0.10.25V
Awake    power consumptinn currentIAWKAwake,VCC1=2.75V,VoOpen    circuit35mA
Sleep    Power Consumption currentISLPSleep,VCC1=2.75V,Vo    Open circuit24μA
Averaage    Power Consumption CurrentIAVGVCC1=2.75VVo Open circuit69μA
Awake    TimetAWVVCC1= 4V,RL=200Ω,Vo Open circuit125150μs
PeriodtPVCC1=    4VRL=200ΩVoOpen    Circuit6080ms
Duty    FactorfdVCC1=    4VRL=200ΩVoOpen    Circuit0.1%



◆ Magnetic Characteristic

Test condition:VCC1 = VCC2 =2.75V,IO = 1 mA

ParameterSymbolMin.Typ.Max.
S pole Operate PointBOPS34
N Pole Operate PointBOPN-4-3
S Pole Release PointBRPS0.51.5
N Pole Release PointBRPN-1.5-0.5

Hysteresis
     ︱BOPX - BRPX︱

BHX12

Note 2:  When the “S” Pole of the magnetic field is vertical to the front mark of product, we call the magnetic field B>0.Note 1: Unit is mT, 1mT=10Gs.


◆ Package Outline

微功耗霍尔传感器AH3662

TO-92UA/TO-92S(UA type)Package figure(Unit: mm)

微功耗霍尔传感器AH3662

Note: In the above package outline figure, Pin 1: Vcc, Pin 2: GND, Pin 3: Output terminal.


Mark

Mark “XX” or “AHXX” are abbreviation form of the parts No., the second line”XXXX”means product lot No.

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