Other Parts Discussed in Thread: TIDA-00835
Hi Team,
I'm working with a customer that is designing with the ADS131A04 and they are interested to use the internal charge pump to remove complexity, however they are also interested in keeping the ADC 0V centered.
Based on the datasheet, if the internal charge pump is used, the device will go from -1.95 to 3.3V. I noticed in the TIDA-00835 reference design, for bipolar inputs an external 2.5 and -2.5V rails are provided.
With all of this, I'm guessing this is not possible and external supplies are necessary for the device to be 0V centered, can you confirm?
Thank you!
Regards,
~John