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TMS320F28376S: Switching from 12b Singled Ended to 16b Differential ADC

Part Number: TMS320F28376S

Hi,

One of my customers has a question regarding the TMS320F28376SPTPT DSP and I was hoping you could help me track down an answer.

They originally were using the 12-bit  ADC with single ended configuration, but now require more resolution so they will need to transition over to the 16-bit ADC with differential configuration. I believe this requires a strange pseudo-differential ADC input voltage that is centered around 1.5V.

Do you have an app note or circuit example for something that generates the required levels to feed into the 16bit ADC configuration for the DSP?  They are interfacing with both true differential and single ended analog voltages that we will need to feed into the DSP.

Thank you!

Ryan