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OPA1632: Stability of cascade amplifiers

vinay bhatt
Prodigy 220 points
Part Number: OPA1632

How to determine stability of cascaded opamps using TINA TI?

  • 0
    TI__Expert 6050 points

    Hi Vinay, 

    I am not able to see the image you attached. Can you try reattaching the image?

    Thanks,

    Nick

  • 0 in reply to Nick Nauman
    TI__Expert 6050 points

    Hi Vinay,

    In order to check the stability of cascaded amplifiers, you will need to check the stability of each stage with the other stages connected to get the effects of the input and output loading. 

    For example:

    Check the stability of the second stage with the first stage connected to simulate the input loading, as shown below

    Then check the stability of the first stage with the second stage connected to simulate the output loading, as shown below

    If both connections are stable, the system will be stable as well.

    Thanks,

    Nick