[time-nuts] Re: DIY Low offset Phase Noise Analyzer (Erik Kaashoek)

[Matthias Welwarsky]

On Sonntag, 10. Juli 2022 01:24:49 CEST djl via time-nuts wrote:
> I checked the Hittite/AD part at Mouser, $21 and change. Problem is,
> they have a few, but it is marked obsolete/discontinued. Also, a
> devilish package to work with. . .

For a one-off project, lifetime doesn't really matter, does it?

The package is QFN, even with center pad. That is inconvenient, but not too 
bad. It's just kind of small, 4mm edge length. You'd certainly need a 
microscope and hot air to solder it or a quite fine soldering tip if you would 
want to deadbug it. Were I to use it, and wanted to breadboard a prototype, 
I'd certainly make a suitable breakout board for easier handling.

> On 2022-07-08 22:19, Mike Monett via time-nuts wrote:
> > To Bob kb8tq. You wrote:
> >> Hi
> >> 
> >> The noise floor of the double balanced mixer (used as a phase
> >> detector at 100 MHz) is in the -165 go -170 dbc / Hz range. I've
> >> used the parts you are talking about. Their floor is *way* higher.
> >> 
> >> Bob
> > 
> > I stated the MC100EP140 would not match the Hittite HMC984LP4E. It has
> > -231 dBc/Hz noise.
> > 
> > -231 dBc is *way* lower than -170 dbc. About 60 dB lower.
> > 
> > You might be interested in trying it. Only $13.25 at Arrow:
> > 
> > https://octopart.com/search?q=HMC984LP4E
> > 
> > Thanks,
> > 
> > Mike
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