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is it possible to configure all 6 channels at different sampling rate in ADS8586S ?

Other Parts Discussed in Thread: ADS8586S

In ADS8586S Data converter all 6 channels can run at 250ksps. Is it possible to configure few of these channels at some 50ksps and few are  at 150ksps like that?

  • Hi Jhansi,

    ADS8586S has two pins to control start of conversion: CONVSTA and CONVSTB. CONVSTA can be used to simultaneously sample and initiate the conversion process for the first half count of device input channels (channels 1-3 for the ADS8586S), whereas CONVSTB can be used to simultaneously sample and initiate the conversion process for the latter half count of device input channels (channels 4-6 for the ADS8586S). Hence, you can assign either channels 1-3 or channels 4-6 for 50ksps sampling rate, the rest of channels can be used for 150ksps sampling rate.

    Another solution is to short CONVSTA and CONVSTB together and let ADC work at 150ksps sampling rate for all channels, then get rid of some conversion codes on lower sampling channels in your software, use one in every 3 sampled data to achieve 50ksps actual sampling rate.

    Regards,

    Dale