[time-nuts] sine to square wave circuits - performance data?

Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed Oct 4 01:24:05 UTC 2017

Do you recall what the amplitude of the input signal to the Wenzel shaper was?

Since I used a 1:2 (3dB) terminated splitter for my measurements the input to the splitter is the same as the Timepod reference signal amplitude
> On 04 October 2017 at 14:12 John Miles <john at miles.io> wrote:
> > I have measured the PN of the LTC6957-4 at 10MHz.
> > 
> > I could measure the PN of the TAPR variant of the Wenzel circuit as well as
> > the PN of the comparator based circuit (with CMOS output buffer).
> > 
> These plots came from the Wenzel diff-amp shaper:
> http://www.ke5fx.com/wenzel_resid_PN.png
> http://www.ke5fx.com/wenzel_resid_ADEV.png
> I don't recall many details of the test setup, or how faithful my implementation of the shaper was to Charles W.'s app note, but this is representative of several plots I have lying around. Not bad performance at all for the cost/complexity involved. 
> -- john, KE5FX
> Miles Design LLC
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