Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Wm8731

Hello people,

Is there anyone who has experience working with WM8731 on DE2 board.

I want to know the following:

Is there any possibility to use WM8731 as a ADC(Analog to Digital Converter)?

I have analog signal and I need to do ADC conversion with DE2 board.

Thank you very much for your time and effort.

Bojan:)

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    It's designed for AC operation and doesn't have a DC accuracy as known from instrumentation and measurement ADC. Automatic zero restore can possibly be used to improve it's behaviour in a measurement application.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Does it means that I could use WM8731 for my own application like A/D converter?

    The signal that I want to convert is DC signal within a range [0 to 1.4 V].

    All the best.

    Bojan
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    The signal has to be DC-shifted to WM8731 input range. At a DE2 board, you must short the line input AC coupling.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    it's the firt time i use DE2 kit,i written some code for LCD,switch,LED.but i want to generate a music by read from SDRAM.i can't understand WM8731.everyone can explain funtion of wm8731 for sound. thank you so much !