Lpc2000

I don't know if there is a vulnerability, but my hunch is that it would
show up first with the PLL -- radiated harmonics from nearby magnetics,
or stuff coupling through the load capacitors or the 1.8V power line.
The PLL is a mixer.  It will multiply any spur, and too much jitter will
make it drop lock.

You could write some s/w to generate a square wave using an output
compare pin, then run it in system with a spectrum analyzer on the
oscillator and a DSO on the output pin, looking for spurs and jitter
with and without your switching circuit running.

James Dabbs, TGA

-----Original Message-----
From: bobtransformer [mailto:bgudgel@...] 
Sent: Monday, May 17, 2004 4:22 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Is this part fairly noise immune ?


Hi...

We make high frequency power supply equipment.

Does anybody here have any experience using the LPC2000
in a high noise environment ?

thanks,
bob





 
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