how to connect analog input directly to FPGA Altera board?

[membership]

hi;
kindly I have a question; I want to implement Sigma Delta ADC on Altera DE1, i wrote the code and run on QuartusII; now i want to know
is it possible to connect the analog input directly to the board?
as in my code the input is introduced as signed [7:0] so my original analog input should be converted to the type signed [7:0] before enter the altera cycloneII core is this conversion possible on the board?
at the end how can i get my digital output from the board and analyze it?
your guidance is very appreciated.
thank you

 

[makanaky]

u cant do this ... if u expect u can do this why would u need an ADC in the first place )

 

[membership]

u cant do this ... if u expect u can do this why would u need an ADC in the first place )

so at last how to connect analog input to FPGA board?