ADuCM360 and VBIAS

Hi

It is possible to turn on the VBIAS and at the same time use this pint as a reference in negative AIN to perform measurement referenced to VDDreg/2?

Just like that

pADI_ADC0->CON = (pADI_ADC0->CON & ~ADC0CON_ADCCP_MSK & ~ADC0CON_ADCCN_MSK) | ADC0CON_ADCCP_AIN10
                | ADC0CON_ADCCN_AIN11;

/* ON Vbias */
        pADI_ADC0->ADCCFG = ADCCFG_PINSEL_AIN11;

Parents
  • +1
    •  Analog Employees 
    on Nov 27, 2018 6:03 AM

    Hi,

    Not sure if it can work well due to the limited drive capability. You can have a try.

    However I don't suggest to use this way. Because we always hope that the reference has good drift and precision performance. Obviously the voltage get from Vbias cannot match this point.

Reply
  • +1
    •  Analog Employees 
    on Nov 27, 2018 6:03 AM

    Hi,

    Not sure if it can work well due to the limited drive capability. You can have a try.

    However I don't suggest to use this way. Because we always hope that the reference has good drift and precision performance. Obviously the voltage get from Vbias cannot match this point.

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