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problem with my ratiometer hall sensor

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vamsee

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Hi!!

I am using this hall sensor **broken link removed**

i got 2 problems:

1. When i vary the magnetic field, the hall sensor is acting like digital, i mean, it showing either high value or low value... Its not varying linearly as the distance between the magnet and sensor varies.

2. The quiscent voltage of this sensor is 2.5V (that is, the hall voltage must be 2.5V without the magnetic field), but it showing 0.7V.

I am playing with this voltage only, when i bring the north pole of the magnet near to the sensor, the reading is 0.1V and moves away it showing 0.7V (like digital)

Please help me out..

Thanq
 

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Will this type of circuit helps in continous signal?
 

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    2013-02-11_11-02-54_522.jpg
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