[time-nuts] Phase Noise of 74AC gates
richard at karlquist.com
Sat Feb 20 04:49:48 UTC 2010
Bruce Griffiths wrote:
> He's made similar comments before.
> It actually isnt that difficult to achieve an isolation amplifier phase
> noise floor below -170dBc/Hz if one is careful to use appropriate parts,
> design techniques, and the input signal level is high enough.
> The real problem is verifying that performance.
The 10811 production engineers searched for a long time for
a low noise buffer amplifier and settled on the ANZAC AMC-123.
The data sheet refers to a patent that reads like
a construction article. You can make your own if you can find
an old 2N5109 transistor.
Rick Karlquist N6RK
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