Breaking News
Comments
Newest First | Oldest First | Threaded View
Rich McDowell
User Rank
Rookie
re: Charge-Pump Phase-Locked Loop--A Tutorial--Part I
Rich McDowell   7/11/2011 6:11:18 PM
NO RATINGS
A few comments/corrections on this article. 1. In this article, starting with the discussion of the charge pump fr no longer refers to the reference frequency out of the VCO/divider but to the input frequency (that was previously called fi. The VCO/divider frequency is called fv. 2. Eq 3.5 n is an element of odd integers 3. Eq 3.6 should be fo=1/2nTd 4. Eq 3.14 should state that {U=1, D=1} is not a PDState Thanks for the otherwise great article.

EREBUS0
User Rank
Rookie
re: Charge-Pump Phase-Locked Loop--A Tutorial--Part I
EREBUS0   7/8/2011 8:26:01 PM
NO RATINGS
Thanks for the refresher, it gave me some ideas on how to solve some signal processing issues I have been thinking about. Well done.

HjMustafa.HjMohamad
User Rank
Rookie
re: Charge-Pump Phase-Locked Loop--A Tutorial--Part I
HjMustafa.HjMohamad   7/8/2011 10:27:03 AM
NO RATINGS
I have learn/read this PLL theory and work on its circuitary 30 years ago, but of course it utilised transistors and semoconductors device rather than chips in todays technology.

atul_iisc
User Rank
Rookie
re: Charge-Pump Phase-Locked Loop--A Tutorial--Part I
atul_iisc   7/6/2011 5:44:08 AM
NO RATINGS
Nice article. Very well written. Gives good idea about PLL design and circuits involved.

GREAT-Terry
User Rank
CEO
re: Charge-Pump Phase-Locked Loop--A Tutorial--Part I
GREAT-Terry   7/5/2011 3:52:20 AM
NO RATINGS
Good aritcle, it refresh me a lot of fundamental stuff.



Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

The Best of the Best Videos on YouTube
Max Maxfield
4 comments
A couple of days ago, my chum Paul was visiting me in my office. He'd wandered over from his cubicle in the next bay to take a brief coffee break. This week, Paul had been admiring the ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...