laoud
Junior Member level 2
Hello to everyone,
It is the first time that I am designing a Sigma Delta modulator. I have started with the example (verilogA) of the 1st odrer Sigma Delta modulator provided by cadence in ahdl Library.
I have performed a transient analysis (the input signal is 100KHz and is sampled with a clock 10MHz) and the modulator is working fine (I can see the output stream). The problem is that I don't know what to do next in order to see the output spectrum (noise shaping etc). Do I have to perform an ac analysis?If yes, what will be the properties of the vpulse (i.e. the clock)?
If you have any tutorial it would be very helpful!!
Thanks in advance,
Laoud
It is the first time that I am designing a Sigma Delta modulator. I have started with the example (verilogA) of the 1st odrer Sigma Delta modulator provided by cadence in ahdl Library.
I have performed a transient analysis (the input signal is 100KHz and is sampled with a clock 10MHz) and the modulator is working fine (I can see the output stream). The problem is that I don't know what to do next in order to see the output spectrum (noise shaping etc). Do I have to perform an ac analysis?If yes, what will be the properties of the vpulse (i.e. the clock)?
If you have any tutorial it would be very helpful!!
Thanks in advance,
Laoud