| Author |
Message |
Analog_starter
Joined: 15 Nov 2004
Posts: 118
|
 26 Dec 2004 8:54 About D/A simulation |
|
|
|
Hi all,
Who can give me a Matlab/Simulink example to generate the n-bit digital sine signal for a n-bit D/A SNR etc. simulation?
Thanks & Best Regards
Analog_starter
|
|
| Back to top |
|
 |
markty
Joined: 15 Dec 2004
Posts: 60
Helped: 2
|
| 26 Dec 2004 11:57 About D/A simulation |
|
|
|
| Use the Quantizer in the simulink toolbox.
|
|
| Back to top |
|
|
yaxazaa
Joined: 13 Nov 2004
Posts: 119
Helped: 3
|
| 27 Dec 2004 5:45 Re: About D/A simulation |
|
|
|
| You can also use script to descript the DAC in matlab besides Simulink. However, you may need to put noise inside as well. When you do SNR, it will be better to Bin it, then FFT/DFT.
|
|
| Back to top |
|
|
boeysue
Joined: 23 Dec 2004
Posts: 190
Helped: 3
|
| 28 Dec 2004 2:41 Re: About D/A simulation |
|
|
|
What do you to bin it before FFT?
Added after 25 seconds:
What do you to bin it before FFT?
|
|
| Back to top |
|
|
sadfish
Joined: 02 Jul 2004
Posts: 29
|
| 28 Dec 2004 3:55 About D/A simulation |
|
|
|
it is simple.
use simulink's sinwave block to generate a sinwave based sampling mode, and do fft to it
|
|
| Back to top |
|
|
xwcwc1234
Joined: 21 Jul 2001
Posts: 313
Helped: 5
|
| 28 Dec 2004 4:35 Re: About D/A simulation |
|
|
|
| Where to download the Matlab script file or Simulink model to do D/A simulation ?
|
|
| Back to top |
|
|
Analog_starter
Joined: 15 Nov 2004
Posts: 118
|
| 28 Dec 2004 7:11 Re: About D/A simulation |
|
|
|
Yes, I also want to get the Matlab script file or Simulink model to do D/A simulation.
BTW, how can I put the digital sine signal code generated by Matlab/Simulink to a real case DAC for HSPICE simulation, then FFT for SNR? Or is there any better way to do this?
Thanks & Best Regards
Analog_starter
|
|
| Back to top |
|
|
arsenal
Joined: 17 Oct 2004
Posts: 134
Helped: 11
|
| 29 Dec 2004 0:10 About D/A simulation |
|
|
|
| u may generate it using vec file in hspice
|
|
| Back to top |
|
|
xuel
Joined: 16 Nov 2004
Posts: 397
Helped: 11
|
| 29 Dec 2004 10:59 Re: About D/A simulation |
|
|
|
| arsenal wrote: |
| u may generate it using vec file in hspice |
how to do it? please give a detailed explanation or example, thx.
|
|
| Back to top |
|
|
soccer
Joined: 30 Jul 2004
Posts: 176
Helped: 2
|
| 29 Dec 2004 16:02 About D/A simulation |
|
|
|
| matlab's simulink tool
|
|
| Back to top |
|
|
arsenal
Joined: 17 Oct 2004
Posts: 134
Helped: 11
|
| 29 Dec 2004 19:33 Re: About D/A simulation |
|
|
|
| xuel wrote: |
| arsenal wrote: |
| u may generate it using vec file in hspice |
how to do it? please give a detailed explanation or example, thx. |
ok,vec file just descripts waveforms in ascii file and u can look it up in the help files of hspice.
and there is another very simple way to give the stimuli:
just use N vpulses in hspice and by setting different delay and period u can get wanted N input waveforms
|
|
| Back to top |
|
|
field_catcher
Joined: 27 Dec 2004
Posts: 26
|
| 29 Dec 2004 23:05 Re: About D/A simulation |
|
|
|
| Analog_starter wrote: |
Yes, I also want to get the Matlab script file or Simulink model to do D/A simulation.
BTW, how can I put the digital sine signal code generated by Matlab/Simulink to a real case DAC for HSPICE simulation, then FFT for SNR? Or is there any better way to do this?
Thanks & Best Regards
Analog_starter |
You also can use spectreVerilog simulator. Save the sample sinewave data into a ASCII file, write a verilg code to read the data. Then you can put verilog model as input to the real D/A in spectreVerilog simultor.
Hope it helps.
|
|
| Back to top |
|
|
xwcwc1234
Joined: 21 Jul 2001
Posts: 313
Helped: 5
|
| 30 Dec 2004 3:55 Re: About D/A simulation |
|
|
|
| Is that mean Cadence Spectra can do mixed-mode circuit simulation ?
|
|
| Back to top |
|
|
field_catcher
Joined: 27 Dec 2004
Posts: 26
|
| 30 Dec 2004 4:22 Re: About D/A simulation |
|
|
|
| xwcwc1234 wrote: |
| Is that mean Cadence Spectra can do mixed-mode circuit simulation ? |
not the spectre simulator. It is spectreVerilog simulator. spectreVerilog simulator uses spectre to do analog simulation and verilog_XL to digital simulation, it has scheme to let these two simulator communicate with each other.
|
|
| Back to top |
|
|
