Question about analog output and ADC input

[EDA_hg81]

The voltage range of analog output signal is 880mv to 3.5V. But the ADC input range is 0 to 2.5V.

Should I use voltage clipping, voltage divider or use AC coupling to process input signal for matching ADC input range?

Thanks.

 

[EDA_hg81]

any good ideas?

 

[mickey_melomane]

Wrtie an equation describing the scaling from (0.88, 3.5) to (0,2.5). Implement this equation using opamps.

This worked for me at RF operation, to change swing levels.