Delta Sigma ADC Problems | Cypress Semiconductor
Delta Sigma ADC Problems
I am trying to set up the Del Sig ADC for a straight forward DC reading on the PSoC 5. I am connecting a single ended input with a range of Vssa to Vdda and a rail to rail buffer. I am transmitting the ADC value over UART to hyperlink. After programming the device I am connecting the ADC input pin to ground to see if I get a reading of zero. However, I get a reading that keeps alternating between 0 and 255. When using a SAR ADC on the same device I dont face the same problem.
I am wondering at this point if the ADC is generating a negative value in 2's complement format. However, I need confirmation that his is the case. If that is the case is there a way to make the Del Sig ADC always floor to zero instead of using negative values?