HAL1821UA-A Linear Hall Sensor Analog 3 Wire TO92UA

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The HAL 1821/1822/1823 are new members of the linear Hall-effect sensor family HAL 182x, offering excellent performance/ price trade-off. They are universal magnetic field sensors with a ratiometric, linear analog output. The members of the sensor family can be used for magnetic field measurements, current measurements and detection of any mechanical movement. Very accurate angle measurements or distance measurements can also be carried out.
The sensors are very robust and can be used in harsh electrical and mechanical environments.The output voltage is proportional to the magnetic flux density through the Hall plate. The choppered offset compensation leads to stable magnetic characteristics over supply voltage and temperature.The different family members vary by -sensitivity (25 mV/mT, 31.25 mV/mT and 50 mV/mT). The quiescent output voltage (offset) for all family members is 50% of the supply voltage.
The sensors are designed for industrial and automotive applications and operates in the junction temperature range from –40 °C up to 170 °C.
They are available in the very small leaded package TO92UA and in the small SMD package SOT89B.


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Ratiometric linear output proportional to the magnetic field
Temperature and stress stable quiescent output volt-age
Very accurate sensitivity and offset
Customized versions possible
On-chip temperature compensation
Active offset compensation
Operates from 40 C up to 170 C junction temper-ature
Operates from 4.5 V up to 5.5 V supply voltage in specification operates with static magnetic fields and dynamic magnetic fields up to 2.25kHz
Overvoltage and reverse-voltage protection at VSUP pin
Magnetic characteristics extremely robust against mechanical stress
Short-circuit protected push-pull output
EMC and ESD optimized design


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