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Design >> Analog Design >> Simulation of flicker noise
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Message started by rajanarender_suram on Feb 28^th, 2006, 9:46pm

Title: Simulation of flicker noise
Post by rajanarender_suram on Feb 28^th, 2006, 9:46pm

How to simulate flicker noise in MOSFETs using Cadence?(looking for setup)

Title: Re: Simulation of flicker noise
Post by Andrew Beckett on Mar 1^st, 2006, 12:23pm

You need to have the appropriate model parameters - which you can find in the documentation.

You could use "spectre -h bsim3v3" or whatever device model you're using, and look for the noise parameters.

Regards,

Andrew.

Title: Re: Simulation of flicker noise
Post by raul on Mar 19^th, 2006, 8:25pm

You can take the open loop test harness that you're currently using for your circuit and just add the noise analysis to it. Specify the frequency range, output node, input ac source and then look in your results browser for the "in" noise. If you want output referred noise, then you can't use the open loop harness. You would have to configure the circuit in the real feedback configuration to get the right answer. Hope this helps.

Title: Re: Simulation of flicker noise
Post by rajanarender_suram on Mar 19^th, 2006, 9:30pm

Hi guys i found a setup and like to share with you

vgs should be such that fet is in stong inversion and vds such that fet is in saturation..

select out put terminals as drain node and gnd.. and input port as source of vgs.

do the noise analysis .. in is the input referred noise and out is the output noise

Rgds
Rajanarender