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Need PLL circuit example needed

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kokmin

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Hi everyone.
I need a PLL circuit example.
Does anybody have useful information about PLL?

THX.
 

tapa

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frecuency?????

if you al looking up to 2.5GHz good ones and interesting aplication notes at national www
 

Tezkaplipoka

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try philips semiconductor Application notes about NE564 and NE568 they cover variouse range of applications
 

Unbeliever666

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Hi there!
Here is another example. This one by standard 74xxx-circuits, that is no one-circuit-PLL. Works fine. Has unlocked High/Low indicators.

Uploaded file: dig_r2c.pdf
 

tek547

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My favorite design resource for PLLs is Horowitz and Hill's The Art of Electronics. It's only seven pages long but talks about type I and II digital, vcos and loop gain calculations. If you don't have the book, I would highly recommend it. It feels like it is written for engineers who need just the facts in order to build a circuit to help with as experiment. Amazon shows the index. Good Luck
 

bumerang

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c source

maybe off-topic but you can find c source library for National PLL's, it's comes with CCS compiler
 

shahrol_hisham

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all digital phase lock loop

all the tutorial is about lpll, can some one help me in designing ADPLL. what i know ADPLL consist phase detector(PD), Loop filter- design using K-1 counter and digital control oscillator(DCO) - from what i read DCO can implement using N-counter but what is N-counter. For PD i got no problom on it but the other one i dont know how to design it.

pls help me.....
 

talk2god

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Re: Need PLL circuit example

Well i am doing the same design will get back to you with the completed design :wink:
 

lguancho

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Re: Need PLL circuit example

:) Hi, there is a free PLL book (awesome 200+ pages) on National Semiconductor website

http://www.national.com/appinfo/wireless/files/Deansbook3.pdf

This is a password protected book; the print feature is disabled. But if you are resourceful, you can get pdf password remover to enable it :twisted:
 

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