TMS320F280039C: ADC configuration

Part Number: TMS320F280039C
Other Parts Discussed in Thread: SYSCONFIG

Hi TI Team

I am trying to read AC volts through ADC on my TMS320F280039C, my AC volts input comes from output of my op-amp and i can see my sine wave and i have set 1.65 V DC offset.

When AC Volts is zero i am reading ADC value comes around 2048, and  I am not able to plot the graph of ADC output in sine waveform when i increase the AC volts supply from 0V to +-240V.

I heard that i have to configure my ADC as single ended mode for such case to read by the cycle with single ADC input coming from op-amp. I am 100% sure that I have use proper voltage divider and select correct op-amp to give single sine wave output with 1V division.

I need some support on how to configure ADC for single ended mode to read bipolar signal with 1.65 DC offset reference.

Thank you

with regards

Tenzin Lobsang

Luminous Power Technology

Senior Engineer