full digital sigma-delta modulator used in DAC!!!!

[ls000rhb]

can anyone give me some examples of Hdl code for full digital sigma-delta modulator used in DAC!!!! I want ot learn the way ot do some test for modulator's performance!!!

i need some very simple examples even though they maybe not appliable!!
Thanks !!!!

 

[piao]

actually I think you need the modulator itself. it can used digital code to generate it . if you can understand the theory it will be single. it looks like a PWM generator. when it equals 1 just output high voltage, if this is 0. output 0. this is the simplest modulator.

then add the analog filter after that, it will help you generator the analog output

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