A question on charge pump in PLL design.

[g94426]

Is there anyone could tell me how to design the charge pump circuits in front of the loop filter of a PLL? Is there any ICs available for this purpose? and how to select an appropriate IC?

I just start to learn to design a PLL and appreciate any help. Thanks first!

 

[sunking]

look for google, many kind of charge pump.

 

[nile_king]

I think also that there is complete PLL on chip try to search in national or so..

 

[eng_Semi]

R u designing an integrated or a discrete PLL ?

 

[layes2]

swithching at source

 

[philiphsu]

Just need discrete pump only...?
there are many discrete PLL ICs but discrete pump seems rare.

 

[a_ronagh]

Hi
I have sent you a paper about charged pump PLLs .
it is not the exact answer to your question ,but i hope it will be useful for you.

 

[karthik167]

i just designed a pll for my project. i followed the design by

Shenggao Li, High Performance GHz RF CMOS IC’s for Integrated Phase-Locked Loops, Phd dissertation Ohio State University, 2000

try to use inter lib load to get the thesis.

 

[opamp741]

i just designed a pll for my project. i followed the design by

Shenggao Li, High Performance GHz RF CMOS IC’s for Integrated Phase-Locked Loops, Phd dissertation Ohio State University, 2000

try to use inter lib load to get the thesis.

can u plz upload that thesis on the board..
thanx

 

[layes2]

pll charge pump design 3rd system
use matlab tsimulink

 

[jotamario]

I designed a cmos PLL frequency synthesizer. For a charge pump is important to consider the dead zone and load redistribution, if you want to have a better phase noise response.

 

[mmohsen]

try this link it contains alot of good questions and their answers about PLL's
https://www.delroy.com/PLL_dir/pll.htm

wish it helps
regards

 

[rficd]

you can study from the classical textbook: RF microelectronics. there is basic theory about the charge pump and PLL.