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ADC on Spartan 3AN Starter Kit with VHDL

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TheDestroyer

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Hello people,

I would like to use the ADC in my FPGA kit described in this user guide, page 71:

https://www.xilinx.com/support/documentation/boards_and_kits/ug334.pdf

I would like to know. Must I use the amplifier? I want to configure it minimally if possible!! I don't want to amplify the signal! and what configuration should I use if I don't want to use the amplifier?

I wrote a state machine with VHDL that I'm testing now for that (I'm new to VHDL, learning more day by day :) ), but I haven't taken the amplifier into account. What changes should I make to make it work without the amplifier? I can't really understand every point in the manual.

Thank you for any efforts :)
 

TheDestroyer said:
Hello people,

I would like to use the ADC in my FPGA kit described in this user guide, page 71:

https://www.xilinx.com/support/documentation/boards_and_kits/ug334.pdf

I would like to know. Must I use the amplifier? I want to configure it minimally if possible!! I don't want to amplify the signal! and what configuration should I use if I don't want to use the amplifier?

I wrote a state machine with VHDL that I'm testing now for that (I'm new to VHDL, learning more day by day :) ), but I haven't taken the amplifier into account. What changes should I make to make it work without the amplifier? I can't really understand every point in the manual.

Thank you for any efforts :)
Click to expand...

Hi,

I am a electrical engineering student and I am doing a school project of FPGA based DCtoDC converter where we have to use partly Spartan's amplifier and its ADC. I found your post in internet, the work that you did is a work that I need.
Hence, kindly asking you to share codes if it's possible.
It would be great, if you could help me.

Thanks in advance,
 

Hi,

First of all you need to read the data sheet of both per-amplifier and ADC ....As I can make it out from the document is both are from Linear technology....then you will get an idea what are the configuration parameter that you need to program from SPI interface.....
then you can control the gain of the per-amplifier....I think that should be your starting points
Then you can really give some input signal and test that at ADC input pin you are getting amplified output....

Good Luck
 
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