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Design Languages >> Verilog-AMS >> how to modeling a full differential opamp ?
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Message started by zhujun134 on Sep 19^th, 2007, 8:19am

Title: how to modeling a full differential opamp ?
Post by zhujun134 on Sep 19^th, 2007, 8:19am

hi,all;
i am designing a sigma-delta ADC,when i want to model a full differential opamp block,then i can find the parameter of opamp how to influence the performance of modulator,but i can not built a full differential opamp in veriloga,and the opamp can inculde these parameter of slew rate,gain,frequency-gain,rout and so on!
i have modeled a opamp reference to opamp in ahdlLib in cadence,but i can not work at all.
would you give me some advice?or give some example?thank you in advance!

Title: Re: how to modeling a full differential opamp ?
Post by alonso on Oct 30^th, 2007, 7:59am

Hi,

When I had the same problem, I used a macromodel for the amplifier modeling.
I hope it will help.

Regards,

Alonso

Title: Re: how to modeling a full differential opamp ?
Post by jbdavid on Nov 30^th, 2007, 1:40pm

There are a good number of legacy examples in the forum here.. Use the search function..
Thats why we should have a wiki.. eh?