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Altera_Forum's avatar
Altera_Forum
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13 years ago

how to connect analog input directly to FPGA Altera board?

hi;

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

12 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    thanks linas..

    you mean i need an off-chip ADC to capture my analog signal signal to FPGA? so any ADC suggested for this effort?
  • Altera_Forum's avatar
    Altera_Forum
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    You need an additional analog to digital converter to capture your analog signal to FPGA. Perhaps you should implement some module in VHDL/Verilog to emulate your analog input? You can analyze your design with Altera's Signal Tap or send the values of interest to PC via RS232 as more advanced option.