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Questions about ADA4938-1 and ADL5562 for using ADC driver circuit of AD9648

Hello,

My customer will use AD9648( ADC  )and ADL5562 (ADC driver) in their product.

And they want to add additional amp. (ADA4938-1) for compensating  Gain value at the frond-end of ADL5562.

Q1) Would you advice your opinions about  using 2 op amps at the front-end of AD9648  (Please refer below concept picture.)?

Q2) At the front-end of AD9648 (ADC), is the above concept  usable circuit?

Q3) Can you recommend other components or circuits for this case?

     ( Amp with 5dB Gain + ADL5562 + AD9648)

        1) Need additional 5dB Gain

         2) Change single-ended signal to differential signals

         3) Output signals should be met the input spec. of ADL5562.

 

Regards,

Se-woong



Correct Typo
[edited by: Se-woong at 4:53 AM (GMT -5) on 1 Dec 2020]
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