AH451全極磁感測器

High sensitivity omnipolar Hall sensor

1.Introduction

AH451 is an omnipolar Hall-effect switch designed and produced based on a bipolar semiconductor (Bipolar) process and is sensitive to the south and north poles. The device integrates a voltage generator that can work stably under a power supply voltage of 3.5 to 60V, temperature compensation circuit, small signal amplifier, Schmitt trigger and open collector output.

          The sensor can work in the South and North Pole. When the magnetic flux density (B) is greater than the operating point Bop, the output will be turned on at a low            output level. Then keep the output until the magnetic flux (B) is lower than the release point Brp. The output will be turned off at a high output level.

          AH451  provides  TO-92S  package  and  SOT-23  package.  Both  packages  meet  the  RoHS environmental protection standard.

2.Features

                  Micro structure

               Sensitivity +/-80/50Gauss (typical value)

               Operating voltage range from 3.5 Vdc to 40Vdc

               Operating temperature range -40 °C -125°C

               Highest ESD performance up to ±5 kV

               open collector output

               3.Application

                 Docking detection

              Door lock opening and closing detection

              Proximity sensing

              Valve positioning Pulse countin

               4.Package

               5.Ordering information

               6.Pin assignment

7.Absolute Maximum Ratings

                  The absolute maximum value is the limiting value when the chip is applied, above which the chip can be damaged. Although the function of the chip is not                        necessarily damaged when the absolute maximum value is exceeded, the reliability of the chip may be affected if the absolute maximum value is exceeded                        for a certain time.

8.Electrical and magnetic characteristics(Ta=25˚C, VDD =5.0V)