Buffer Design for different common mode voltage

[partha protim dash]

Hello,

I need a help for designing a buffer for my TIA. My single ended TIA can operate at different data rate so it has different common mode voltage (200 to 500 mV). I do not understand how I should implement a buffer circuit for this.



Thanks in advance for your help.

 

[crutschow]

And I do not understand what different data rates have to do with common mode voltage in a TIA.

Post your circuit schematic.