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Choose a variable gain amplifier for hall effect sensor output

Question asked by hankyang on May 23, 2018
Latest reply on Jun 4, 2018 by krisf

I have a hall effect position sensor with output ranging from 2.5V-2.9V and is nonlinear w.r.t the measured position. So I want to use a variable gain amplifier that can amplify the raw output to 0-5V and make it as linear as possible.

 

I imagine in my case I only need a simple differential amplifier with an adjustable gain. However, VGAs like AD605 seems a bit too complex for me to use, because I had some hard time with the output common mode voltage. 

 

Is there a very basic VGA that takes in DC input and can amplify it with an adjustable gain? Or maybe an evaluation board can also be helpful.

 

Thank you,

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