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Fully Differential Opamp Verilog-A Model

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imranlanker

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opamp veriloga

Hi guys,

I'm looking for a sample veriloga code to model a fully differential opamp. I need it for the RSD stage of pipeline ADC simulation.

Thanks,
Imran.
 

differential op amp

imranlanker said:
I'm looking for a sample veriloga code to model a fully differential opamp.
Imran.
Click to expand...
You could start from examples from the Cadence ahdlLib/opamp
s. $CDS_INST_DIR/tools/dfII/samples/artist/spectreHDL/Verilog-A/analog/opamp.va
... and change the non-differential output to a differential one, perhaps using the ahdlLib/diffdriver template,
s. $CDS_INST_DIR/tools/dfII/samples/artist/spectreHDL/Verilog-A/func/diffdriver.va

HTH, erikl
 
The examples in ahdlLib are so simple.
They could not fit our needs.
 

Well, on the other hand the universe of "needs" is guaranteed
to exceed anybody's available time & patience, and you have to
pick something that's "good enough" for the simple and use the
detailed model where it's not - and figure out when.

There's nothing stopping you from supplementing the shells
you can find, with whatever you find lacking. At least you
have a working shell with basic function.
 

Thanks d. freebird, that's a good one!
 

Hi

I found cadance example.
And, tried to modify this example to add output limitation.
But. I could not.

Pls tell me.

Thanks.
 

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