Definitions of some parametric of an instrumentation amplifier

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luckyvictor

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Hi all

I am relatively a newbie into this subject, and currently I am working on a project, which I have to buy some instrumentation amplifiers, and there are some parametric which I dunno how to judge for their performance. They are:

Input Offset (+/-), Input Offset Drift(+/-) and Input Bias Current (+/-)

What are these and how important they are?

Is it the lower of these values, the better the component it is please?

Many thanks
 

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