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TMS570LC4357: How to make the ADC accuracy calibration in TMS570LC4357

Santhosh Chandramohan
Intellectual 391 points
Part Number: TMS570LC4357
Other Parts Discussed in Thread: HALCOGEN

Hi Team,

I have configured the ADC1 in HALCoGen tool for the voltage input signal. 

Code:

ADC1 read using group and channel

these code is working fine. but I need a support for the calibration of ADC fine tuning because value for 14 Volt but getting 14.5 Volt.

The Hardware side all are correct.

  • 0
    TI__Guru**** 186196 points

    Hi,

    1. The maximum ADC input is 5V if VCCAD and ADREFEHI are 5V. I guess there is a voltage divider circuitry for the ADC input. What is the real input level to ADC pin? 

    2. I suggest to try a large sampling time 

    3. You can use adcCalibration() or adcMidPointCalibration() APIs to compute the offset error.