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OPA657: impedance matching

xyz xyz
Intellectual 1000 points
Part Number: OPA657

Hello

it's my circuit:

and  the frequency reponse of above amplifier is:

and the below image is the internal circuit of ADA4950:

and the output impedance of the OPA657 as per its datasheet is (page 12 of OPA657's datasheet):

  • how can I make an impedance matching between OPA657 and ADA4950?

Best Regards

  • 0
    TI__Genius 15975 points

    Hi,

    1. It is possible to use the below circuit for 50-ohm impedance matching between the OPA657 and ADA4950.

    2. You may want to simulate this circuit in LTSpice to see if there is any problem in stability.

    Best Regards,

    Rohit