Quantizing sine wave

Farhan,

I moved this to an appropriate forum (the Feedback, Suggestions and Questions forum is for issues/questions about the forum system itself, not for technical questions).

I suggest using a Verilog-A of an N-level quantizer as found here: https://designers-guide.org/verilog-ams/index.html would make sense. You can then use this after a sine source (the test example does exactly that).

Andrew

Thanks Andrew. I did as you suggested . I got quantized sine waveform. Only problem is that it starts from zero when it should start from 800nA. 

I have attached outputwaveform and verolog code.

Dear Farhan Ali 9216,

Farhan Ali 9216 said:

nly problem is that it starts from zero when it should start from 800nA. 

If you were following the directions Andrew suggested, is there a reason you did not just add an offset of 800nA to the sinusoidal source used as the input to your veriloga code? Or, if you still want to maintain the +/-800 nA range of a zero average sinusoidal source, simply offset the phase of the input sinusoid by 90 degrees to start its amplitude at +800 nA. In Figure 1, I illustrate the insertion GUI and circle the relevant dialog boxes in which you might enter an offset voltage or initial phase to the sinusoidal source.

I hope I understood your question correctly and this helps a bit!

Shawn

Figure 1

I don't see that, and wouldn't expect it either. The "or initial_step" in the @cross line should take care of setting the initial output.

Can you please show the input.scs with the instance of the clock and sine source, and also the instance of the quantizer (it does look as if you've changed the parameters in the definition of the code rather than as an instance parameter of the quantizer).

Andrew