How to calculate noise contribution each element of an OTA

[richaphy]

I have made a low pass filter with gmC OTA.
I want to know what is the noise contribution of each element in the filter.
I mean how much noise any specific transistor in the OTA may be generating.
How can I do that?
Please help me
Thanks

 

[pragash]

every active device will have Noise figure. you can ask manufacturer or look at the datasheet.

 

[richaphy]

To get noise contribution of every component, go to Noise Summary in Cadence and select the number of Noise Contributors. By defaults it shows top 3 noise contributing components, which can be increased.