ADRV9008-1: Calibration Required for Each Scan Above 100 MHz IBW?

What do you mean by scanning, can you please explain a bit more  on the requirement?

When the device is the radio on state, the Arm scheduler performs the tracking calibrations on a periodic basis.

Can you please check "ADRV9009 TRACKING CALIBRATION SCHEDULER" section from UG -page 165 for more details.

Dear Team,

Our project is search receiver and we need to sweep through the frequency range 400Mhz to 6000Mhz with 200Mhz IBw , to achieve 400Ghz/s scan rate .so will have to tune LO frequently at 200Mhz step,would like to know if we have to calibrate every time we switch to the next step.

Regards

P Prasanth

Yes, we would need to re-run the needed calibrations again.

As the frequency step change is more than 100 MHz, please follow below procedure.

• Move the device to the radio off state.
• Program the new LO frequency
• Rerun the initialization calibrations by calling TALISE_runInitCals and TALISE_waitInitCals
• Move the device back to the radio on state

Follow the " RF PLL FREQUENCY CHANGE PROCEDURE" from UG page 109.