Bipolar Intergrated Circuit, Hall Effect IC, Sensor, Hall Effect Sensor, Speed Sensor, BLDC Motor Sensor,
AH3021 (2) is a bipolar high sensitivity Hall effect magnetic sensor which is made by BiCMOS technology (Hall effect digital intergrated circuit. It includes voltage regulators, Hall voltage generator, signal amplifier, Schmitt trigger , temperature compensation circuit, and open collector output driver circuit etc. It's suitable for working in unipolar and multipole magnetic field, and it's extensively used in all kinds of electromechanical integration fields.
When a "S" pole or "N" pole magnetic field is approaching to the front of the circuit, the output level of the circuit changes from high to low or from low to high, if the field is far from the circuit, the output status maintains constant, only when "N" pole or "S" pole (opposite with the pole of the initial magnetic field) field is approaching again, the output status of the circuit jumps back to original status. It means a complete circle of the circuit's operation needs a pair of magnetic field.
Product Characteristic Typical Application
Wide operating voltage range Contactless switch
High sensitivity Position induction
Convenient Output interface Encode control
Wide operation temperature range Rotation counting
Contactless operation, high reliability Speed measurement
BLDC motor, Automotive electronics, Numerical control machine, Computer, Smart Electric meter, Electronic water meter, Heat meter, flow meter, electrical bicycle, Servo motor, Air conditioner, variety of small home appliance, Computerized embroidery machine, and some other electromechanical integration fields.
|Output Reverse Breakdown Voltage||Vce||60||V|
|Output Low Level Current||IOL||50||mA|
|Ordinary Environment Temp. TA||E||-20~85||ºC|
|Wide Environment Temp. TA||L||-40-150||ºC|
|Srorage Temp. Ts||TS||-55-170||ºC|
When the sensor is used, all the above specified parameter range can't be exceeded, and it can't be used for a long time when the parameter is approached.
Before the user is using the product, please detailed know the product's characteristic and attention, or to install and operated after guided by professional persons, to ensure the products' reliable operation in long term.
In order to avoid mechanical stress affect the circuit internal chip, the part which is 1mm to the foot of the pin can't be bended, and the foot of the pins should be fixed when the other part are bended or shaped.
Electrical characteristics TA=25ºC
|Parameter||Symbol||Test Condition||Parts No. and Value||Unit|
|Output low level voltage||VOL||Iout=25mA B>BOP||--||200||400||mV|
|Output high level voltage||IOH||Vout=24V B<BRP||--||0.1||10||μA|
|Supply current||ICC||VCC= Output open circuit||--||-||10||mA|
|Output rise time||tr||RL=820Ω CL=20PF||--||0.12||-||μS|
|Output fall time||tf||RL=820Ω CL=20PF||-|
|AH3021||Bop||Bipolar, High sensitivity, Outline:TO-92S SOT-23-3L||+2.5||4.0|
|AH3022||Bop||Bipolar,high sensitivtity, output with pull-up resistor (8K-12K)|