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  1. #1
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    instrumentation amplifier with wide differential input

    Dear Friends

    I am designing instrumentation amplifier with differential input voltage equal to 400 mv, I used a source degeneration resistor to increase this range. do you think it is good range?

    Can you please suggest me some of the available commercial instrumentation amplifier in order to compare

    thank you very much

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    Re: instrumentation amplifier with wide differential input

    If you know output signal range desired and gain,
    you get the differential input range.

    Distinguish between "amplify clean" and "tolerate,
    with loss of fidelity" regarding the differential input
    range, and do not neglect the common mode bind
    which may change as you attempt to raise signal
    range. The internal amps each have their limits and
    the A=2 front end amp particularly can be a problem
    for high input levels, clipping at its output.


    1 members found this post helpful.

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  3. #3
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    Re: instrumentation amplifier with wide differential input

    Thank you free,

    I am getting +-400mV linear and clean differential level, only have a problem when the gain is set to unity I can see clipping, otherwise it is working fine from Gain = 2 and more, soon I will show you the result graphs,

    do you think it is good result even when the amp is not working with unity gain ?

    thank you again



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  4. #4
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    Re: instrumentation amplifier with wide differential input

    Junus2012, you want to discuss the prioperties of a circuit - without showing the circuit.
    Do you really expect to get a comprehensive answer?



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