[time-nuts] Re: Micrel (Microchip) PL-500 Low Phase Noise VCXO

John Ackermann N8UR jra at febo.com
Sat Sep 18 15:02:17 UTC 2021


On 9/18/21 10:50 AM, Lux, Jim wrote:

> LT3042 and LT3045 are your friend here.  Excellent PSRR well up past 10 
> MHz.
> 
> If you need more current, you can just parallel them.
> 
> $6 each for the 3045 from Digikey

For best performance, take a look at the layout suggestions in the 
3042/3045 datasheet, and especially the way the evaluation board is laid 
out.  There's quite a difference between their recommendation and what 
my first uneducated attempt looked like.

John




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