PLL loop filter help

[frank]

hello,

Does anyone of a good online reference that explains and has the
equations for PLL bandwidth, damping factor, loop filter natural
frequency, settling time and other such parameters important to PLL
design. I found several references but none are to my liking so far.

-Thx
Frank

 

[Kevin Aylward]

hello,

Does anyone of a good online reference that explains and has the
equations for PLL bandwidth, damping factor, loop filter natural
frequency, settling time and other such parameters important to PLL
design. I found several references but none are to my liking so far.

All the ones you have mentioned are not specific to PLLs. They are
generic to any feedback system. So, look up "feedback control theory",
or something similar.

Kevin Aylward
[email protected]
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

[Active8]

hello,

Does anyone of a good online reference that explains and has the
equations for PLL bandwidth, damping factor, loop filter natural
frequency, settling time and other such parameters important to PLL
design. I found several references but none are to my liking so far.

-Thx
Frank

did you check the motorola app notes for an-535 and an-1207? aside from
that check what kevin said. a google of "Nyquist Stability" returned a
nice article. something like EE214 handout X and #17. X is Nyquist
stability and #17 is feedback theory.

mike

 

[Jim Thompson]

hello,

Does anyone of a good online reference that explains and has the
equations for PLL bandwidth, damping factor, loop filter natural
frequency, settling time and other such parameters important to PLL
design. I found several references but none are to my liking so far.

-Thx
Frank

See "PhaseLockedLoopAnalysis.pdf" on the S.E.D/Schematic page of my
website.

This analysis dates to around 1966-68 and is with an *analog* phase
detector.

(I save everything ;-)

...Jim Thompson

 

[Jeroen Vriesman]

I remeber having to completely analyse a PLL as part of the first-year
electronics course as a physics student.
We had a little "electronica practicum" book which explained the PLL with
lots of details.

I tried looking for it, but cannot find it anymore (should be somewhere in
the box labeled: 12 year old stuff), but maybe you can find a second year
physics student at "TU Delft, the Netherlands" somewhere on some mailing
list, and ask him/her to scan it for you, they probably still use it.

 

[Robert Lacoste]

Not exactly what you requested but there is a good (and free) PLL simulation
software available on analog device web site. (www.analog.com).

Yours,
Robert
http://www.alciom.com

 

[David Bengtson]

Take a look at Dean Banerjee's 250 page app note on PLL design at
National Semiconductor.
http://www.national.com/appinfo/wireless/files/Deansbook3.pdf

Needs acrobat 6, and is protected so you can't print it.

Dave