2.2 GHZ pll help required

[Junaid Alam]

I am developing a 2.2 ghz pll please help especially regarding pll design . please refer Ebooks and other resources for the design. i have uploaded my design specifications in the file attached.






Junaid Alam
Pakistan

 

[activewei]

there is a lot of application note and literature available:

http://www.minicircuits.com/application.html
**broken link removed** (look for application notes)

simplest way is to use National Semiconductor PLL webench at: **broken link removed**

I am sure that your design will work

 

[lguancho]

Hi. I had taken a look at your spec/abstract. You should have some basic PLL parameter to start off your design.

Since you are designing a fixed frequency PLL, presumably you are not concerned about switching speed, but what about yout reference spur suppression, and phase noise requirement.

About your VCO design, things such as VCO tuning voltage level will design your loop filter topology.

Assume some basic spec for your PLL, for eg

Reference spur suppression @100MHz offset: XdBc
Phase Noise
@ 1KHz : -X1dBc/Hz
@10KHz : -X2 dBc/Hz
@100KHz -X3dBc/Hz
@1MHz -X4dBc/Hz