[time-nuts] PLL Phase Noise vs. Divider Jitter

[Matt Ettus]

> I'm aware that they use mixers at higher frequencies, but what are one's
> alternatives at low frequencies such as a 10MHz reference?

The real answer is not to divide down your reference.  This takes
modern PLL chips capable of using a high reference frequency.  If you
need fine tuning capability, then you'll have to use a fractional-N
PLL.

Analog Devices has a program called ADISimPLL which allows you to play
with all these factors using real parts.

Matt