TIDA-010062: Purpose to call function ADC PPB offset calibration

Hi expert, 

Any update on this ? 

Thanks and regards,

Johnny

Hi expert,

Any update would be thankful. 

Johnny

Hi Johnny,

Johnny Chen said:

(1). What is the main purpose to call the function ADC_setPPBCalibrationOffset at here in application ?

This is just to give an option of calibrating ADC value using PPB.

Johnny Chen said:

(2). Continue to (1)., is it a must need to call the function ? If yes, on the customer's board, how to make adjustments for the offset value ?

It is not a must need. I think it is based on customer's test. 

Johnny Chen said:

(3). Continue to (1). how about ADCB and ADCC module ? Why aren't these two ADC modules been calibrated ? Do we need additionally put code to calibrate ADCB and ADCC offset ?

You only need to calibrate the ADC module used in the application code.

Regards,

Chen

Hi Chen,

You mentioned this is an option of calibrating ADC value using PPB. Does the PPB offset calibration here mean to calibrate the offset generated by HW circuits like opamps, etc... RATHER THAN the F28003x ADC themselves, correct ?

Since F28003x ADC offset have another registers which are usually calibrated by our factory trim during boot-up, isn't it ?

Thank you for clarifying,

Johnny