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Maximum instantaneous noise level

Valeriy Alexeev
Prodigy 80 points
Other Parts Discussed in Thread: ADS8681, ADS8900B, ADS8860, ADS9110, ADS7882, ADS7886, ADS8481, ADS8411

Good afternoon. Now, I am considering the possibility of using your ADC in the development of our company's devices. The value of the maximum instantaneous noise level of the ADC is crucial when choosing an ADC. What is the maximum peak-to-peak noise level of following ADCs:
ADS7882, ADS7886, ADS8411, ADS9110, ADS8481, ADS8860, ADS8681, ADS8900B or what parameter in the ADC datasheets is responsible for the maximum instantaneous noise level of the ADC.

I mean the value by which the true value of the sample can change.

Thanks for the answer!

  • 0
    TI__Guru 60476 points

    Hello Valeriy,

    Welcome to our forum and thank you for your post.

    If the peak or peak-to-peak noise is not directly given in the Electrical Characteristics table, you can back-calculate this specification from the ADC's signal-to-noise ratio (SNR). SNR is calculated using the ADC's full-scale range (FSR) and the RMS voltage noise. Given the SNR and FSR, you can derive the RMS noise and convert it to a peak or peak-to-peak voltage.

    We have an excellent series of training videos which explain exactly what these specifications mean and how to convert them using the information in the ADC datasheet. Please visit our Precision Labs - ADCs training portal for on-demand access.

    Best regards,