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Design >> Analog Design >> VCO
https://designers-guide.org/forum/YaBB.pl?num=1102078979

Message started by designer on Dec 3^rd, 2004, 5:02am

Title: VCO
Post by designer on Dec 3^rd, 2004, 5:02am

Could anyone tell me the expression which correlates the current into the 3-stage CMOS inverter chain and the frequency output?

Title: Re: VCO
Post by ccd on Oct 9^th, 2006, 12:34pm

I think the answer to your question is at http://www.designers-guide.org/Forum/YaBB.pl?num=1130332597

Title: Re: VCO
Post by donlion on Oct 19^th, 2006, 7:20pm

td=c*Vsw/Iss ,T=2*N*td,f=1/T=1/2*N*td=Iss/2*N*c*Vsw
td is the delay time of one stage, c is load capacitance, Iss is current of one stage, Vsw is votage sweep,N is the number of the stages.
get it ?