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ADC12DJ5200RF: Calibration Modes

Part Number: ADC12DJ5200RF

Hello Team,

We are using the ADC12DJ5200RFEVM board with TSW14J57(rev. E) board set to JMODE1 (10.4 GSPS). We have some questions regarding calibration procedure:

  1. Does Background calibration work without Foreground calibration enabled?

For example, after resetting device registers and reprogram Clocks and ADC (on GUI “EVM” tab) with such settings:

we got the following results:

As you can see DC offset is not calibrated, there is some noise on a base line.

 

  1. We observe DC offset fluctuation with background calibration enabled with such settings:

Result:

Is such DC offset fluctuation is normal? Any possibility to eliminate fluctuation and achieve stable DC offset calibration with background calibration enabled?

 

Thanks,
Vasily