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When the frequency is higher, the value of AD9213 sample drops a lot.

AD9213 works in 10G sample rate. The external signal source sends sinusoidal waves of the same power at different frequencies. When the frequency is higher, the value of AD9213 sample drops a lot. What causes this?

  • Hi daidaishannon,

    Thank you for your interest in AD9213.

    Could you share your analog front end design?
    Please try to probe the differential voltage between VIN_P and VIN_N to confirm if this ADC output is the same as the differential voltages seen in the input.
    If this is the case, you will need to adjust the input power for higher frequencies to compensate for the loss and maintain the proper levels.

    Best regards,
    Peevee