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How to design the Preamplifier for hall sensor ?

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mark_nctu

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How to design the Preamplifier for hall sensor ?

Thanks

Mark
 

Would do you design a LNAs? It is similar.
 

I would say totally different: one is inherently narrow band (so no flicker noise or major offset problem, the other is practically DC measurement therefore DC offset and high gain are major issues.

I would suggest to look for chopper amplifiers.

nathan
 

You can find the hall sensors with integrated amplifiers, with digital outout etc. Try to look at Allegro MicroSystems, for example
 

rfic said:
Would do you design a LNAs? It is similar.

It need a low speed and ultra noise amplifier.
 

Igor_S said:
You can find the hall sensors with integrated amplifiers, with digital outout etc. Try to look at Allegro MicroSystems, for example

Thank you.

I have viewed the website of Allegro MicroSystems Inc.
 

nathan said:
I would say totally different: one is inherently narrow band (so no flicker noise or major offset problem, the other is practically DC measurement therefore DC offset and high gain are major issues.

I would suggest to look for chopper amplifiers.

nathan

Thanks for your suggest.
 

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