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Request a schematic review of AD9648 input circuit

Hello,

My customer use AD9648 for FM signal.

For this, they request your advice about their circuit.

Please refer below their schematic and let me know your opinions after reviewing their schematic.

(Typically, they want to get your opinions about time constants in input circuits of AD9648 first.)

PDF

Would you suggest your opinions about their schematic ASAP ?

Regards,

Se-woong

Parents
  • Hi Se-woong,

    Sorry for the delay.
    Here is the recommended analog input configuration for the device family from the evaluation board user guide:


    AD9648 is pin-compatible with AD9258 and has the same 14-bit resolution and max sample rate of 125Msps.
    C41, C46 are okay but other component values need to be changed and ferrite beads need to be added in series with VIN+ and VIN-.

    What is the maximum frequency of operation?
    Will max sample rate of 125Msps be enough for your application?


    Best regards,
    Shine

Reply
  • Hi Se-woong,

    Sorry for the delay.
    Here is the recommended analog input configuration for the device family from the evaluation board user guide:


    AD9648 is pin-compatible with AD9258 and has the same 14-bit resolution and max sample rate of 125Msps.
    C41, C46 are okay but other component values need to be changed and ferrite beads need to be added in series with VIN+ and VIN-.

    What is the maximum frequency of operation?
    Will max sample rate of 125Msps be enough for your application?


    Best regards,
    Shine

Children
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