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ADS1283: calibrate the waveform amplitude

Lidong Yu
Intellectual 1756 points
Part Number: ADS1283

If I want to calibrate the waveform amplitude at all sampling rates, what is a better method, Can ads1283 conduct Pspice simulation?

  • 0
    TI__Mastermind 18900 points

    Hello Lidong,

    I'm not sure how to interpret the question.

    Calibrating for gain and offset is to correct for errors in the ADC which result in correcting errors for the captured waveform amplitude. Gain and offset error is present regardless of what sample rate is chosen so if you calibrated for a particular gain, then you are fine for all sampling rates as they are DC errors. This process is outlined in the datasheet using the GANCAL or OFSCAL command, or looking through the User Calibration section.

    Unfortunately, the ADS1283 does not have a SPICE model in any form. I'm not sure what you'd like to do with a SPICE model, but any kind of calibration routine wouldn't be helpful in the SPICE domain. A lot of error analysis can be done with the [GUI] Analog Engineer’s Calculator and some fundamental knowledge about those errors can be found here: https://training.ti.com/ti-precision-labs-adcs-ac-dc-specifications-offset-error-gain-error-cmrr-psrr-snr-and-thd

    Please let me know how I can better understand what you need to do.

    Best,

    -Cole