reference voltage of sigma-Delta ADC in H1D

Dear,

Is the SBIAS used for a reference voltage of SDADC?

If I set the value as 0.9V in single-ended mode, can I just calculate as follows for transferring the ADC value to voltage?

1unit = 0.9 / 0xFFFFFF; //SBIAS(0.9V) / 24bit(0xFFFFFF) = 0.05364418349529406uV

1unit = 1.8 / 0xFFFFFF; //SBIAS(1.8V) / 24bit(0xFFFFFF) = 0.1072883669905881uV

or

Do I have to use the max input voltage?

Thanks,

Top Replies