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calibration coefficients of DC offset and QEC in adRV9008

Hi,

ADRV9008-1/2, user guide says that it can achieve frequency hopping within 70us...This 70 us calibration time includes QEC and DC offset calibration or we have to allot calibration time to do these DC offset calibration, TX/RX quadrature calibration separately if frequency changes more than 100 MHz...

 If not so, can we use stored calibration coefficients of DC offset calibration and quadrature calibration on-the-fly if application changes more than 100 MHz from the last calibrated frequency like  possibility in AD9361 to reduce calibration time and retain RF performance in hopping mode.

regards,

lakshmi

  • .This 70 us calibration time includes QEC and DC offset calibration or we have to allot calibration time to do these DC offset calibration, TX/RX quadrature calibration separately if frequency changes more than 100 MHz...

    No. This 70usec time doesnot include the cal time that is required to be run if the change in frequency is more than 100MHz. 

     If not so, can we use stored calibration coefficients of DC offset calibration and quadrature calibration on-the-fly

    There is no way to do this in our chip.

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