Re: [time-nuts] Phase Noise/Jitter/SNR/N to Slope ratio etc

2008-04-29 Thread John Miles
So to summarise : To make a synthesiser`s phase noise low : - Apply the KIS principle [Keep It Simple] - Use high speed [non-saturating?] logic rather than low CMOS is actually among the cleanest logic families for digital PLLs these days. ECL has always been among the worst. It was used

[time-nuts] Phase Noise/Jitter/SNR/N to Slope ratio etc

2008-04-28 Thread Don Collie jnr
So to summarise : To make a synthesiser`s phase noise low : - Apply the KIS principle [Keep It Simple] - Use high speed [non-saturating?] logic rather than low - The logic supplies should be well regulated, distributed and decoupled. - Make the PRF to the P/F detector as high as