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Re: Can you use multiple outputs of SI5351 in a high performance VNA?

 

@Jerry Vaughn
My experience with documenting digital and mixed-signal ICs since the mid-1990s tells me that "good enough" rarely is.?

We've always used water as an analogy for electricity.? Let's say that you have a valve on a water line that's "programmed low" -- i.e., the valve is closed.? The valve is on the drain side of your water system device.?

So no water gets through the valve, OK?

Now explain a leaky toilet that runs all the time.

If practical, why don't you try terminating the unused outputs as close to the chip as possible, just to see what happens??

73
Jim N6OTQ



On Thu, Jan 17, 2019 at 2:39 PM Jerry Gaffke via Groups.Io <jgaffke=[email protected]> wrote:
The si5351 can be programmed to drive unused outputs low.
That should be good enough.

On Thu, Jan 17, 2019 at 11:14 AM, Jim Strohm wrote:
Are the unused outputs physically terminated, or floating? -- i.e. open?
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