Frequency of a ring oscillator

[pter.son1]

Hi,

I had a doubt about, how can I calculate the frequency of a ring oscillator with CMOS transistors, changing the width of the NMOS and PMOS transistors, and the number of inverters.

Thanks.

 

[analogLow]

Hi,

I had a doubt about, how can I calculate the frequency of a ring oscillator with CMOS transistors, changing the width of the NMOS and PMOS transistors, and the number of inverters.

Thanks.

excellent explanation here section 8.2.1, p.148:
https://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-78.pdf