[time-nuts] PLL book 3rd edition

[KA2WEU at aol.com]

yes, but the underlying math and system architecture  will/would be 
exciting.
 
Thanks, for the comments, Ulrich 
 
 
In a message dated 3/8/2016 11:29:25 A.M. Eastern Standard Time,  
richard at karlquist.com writes:



On 3/8/2016 3:18 AM, KA2WEU at aol.com wrote:
> Good  Morning,
> technically you are correct, most buy what they find and live  with a
> compromise. But companies like mine, R&S, test equipment ,  need superior
> performance and many parts which we need, we have made  by foundries.
> Numerically controlled oscillators belong to this and  modern IQ
> modulators and arbitrary wave form generators are the norm.,  much better
> then many analog  type designs.  Most chips on  the market are
> compromises for power consumption and  phase  noise. We now have fraction

I worked for HP/Agilent for 35 years,  retiring 2 years ago just before
the Keysight spinoff.  Yes, they do  have proprietary chips made by 
internal and external foundries (for  example my phase detector).  Other 
than that one case, I was never  able to get any custom
chips made during my career because of the high NRE  cost and
the need to have either very high volume, or an extreme  value
proposition to cover NRE.  There was a small group of  designers
who designed a handful of fractional-N chips.  The rest  of
us were merely users of them.  Newer designs have tended  towards
COTS frac-N chips.  Similarly, there was a small department  of
designers of NCO's, AWG's, etc (I was in the same lab with  these
guys), and the rest of the engineers were merely users of  these
IC's.

So in terms of the book market, it would be limited to a  small
fraction of the engineers in test and measurement.  And  that
small fraction probably has already gone way beyond any
technology  that has made it into textbooks.  A lot of this
really advanced work  is based on trade secrets that of
course will only appear in internal  documents.

Rick