PLL loop filter design

[hmsheng]

pll filter tools

I want to simulate a PLL and the loop filter parameters need to be calculated automatically according to bandwidth and phase margin. The loop filter is a 3rd order passive loop filter. The attached is a good tool to calculate the loop filter. But I need to do calculation in my program. So does anyone know the equations used by the tool to calculate the 3rd order passive loop filter?

 

[amarnath]

pll loop filter design program

you can search this forum for many thesis on pll's or you can refer to any of the hundreds of thesis on PLL's on the web.


Thanks
Amarnath

 

[John Miles KE5FX]

pll loop filter design tool

Google deansbook.pdf for a decent reference written by the author(?) of the NatSemi WebBench program.