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## Natural Frequency Pll |

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pll natural frequency , natural frequency , pll with fixed frequency , pll frequency synthesizer

pll natural frequency , natural frequency , pll with fixed frequency , pll frequency synthesizer

10 Threads found on edaboard.com: **Natural Frequency Pll**

The **natural** **frequency** of a system is the **frequency** at which it would oscillate (say, for a step input) if there is no damping.
So does this mean, the ideal **natural** **frequency** should be as low as possible? So that it does not oscillate and just settles quickly
I have a **pll** with an output (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-13-2015 08:33 :: amsdesign :: Replies: **1** :: Views: **936**

What is the formula for the 3dB bandwidth of a **pll** in terms of the **natural** **frequency** and damping???
All the formulas I see online are giving me one answer, but when I create a simple linear AC test
bench in Cadence and do an AC simulation, I am getting a different answer. Can somebody look at
this test bench and tell me if I am doing (...)

Analog Circuit Design :: 05-21-2015 15:59 :: mischivis :: Replies: **0** :: Views: **657**

Hi,
Loop filter is to proved dc voltage to VCO and hence VCO provides **frequency** based upon input control voltage. There are calculations from loop filter for stable operation of **pll** like Bandwidth, damping factor, **natural** frequrency, phase margin.
Bye.

Analog Circuit Design :: 02-05-2011 09:17 :: coolstuff07 :: Replies: **3** :: Views: **1075**

Increase loop gain thereby decreasing the **natural** **frequency** of the loop.

Elementary Electronic Questions :: 10-28-2009 08:35 :: LvW :: Replies: **1** :: Views: **1135**

1,
When designing **pll**, it is always said that **pll**'s bandwidth should be set to be smaller than Fref/10. what's the **pll** bandwidth? Is it Wc(open loop unit gain bandwidth), Wn( **natural** **frequency**) or W-3db ( closed loop -3db **frequency**)?
2,
and I know Wc means the **frequency** (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 03-12-2009 15:27 :: flesher :: Replies: **1** :: Views: **2165**

Hi, guys, If we already have the parameters for passive third-order LPF, how to calculate the **natural** **frequency** and damping factor?
we can find the equations to get these for second-order LPF. but I do not know how to get those for third-order passive LPF.
thanks.

Analog Circuit Design :: 07-09-2008 12:27 :: gavin168 :: Replies: **4** :: Views: **5281**

1) **pll** **natural** **frequency** <=Hsync **frequency**/**pll** Stability Ratio
2)**pll** **natural** **frequency** = square root
Ct=0.082uF Ip=charge pump current
N=**pll** Divide Ratio P=Post Divide Factor*
pi=3.14 Kvco=MHz/V
Can anyone (...)

Analog Circuit Design :: 04-09-2007 03:29 :: evence :: Replies: **0** :: Views: **1311**

Hi,
I would like to ask: how can you estimate the damping factor and the **natural** **frequency** from the plot of the transfer function of a device (say **pll**)?
Added after 2 hours 2 minutes:
I actually found the method to estimate those parameter. I uploaded the file just in case anyone wants to reference to it

Analog Circuit Design :: 10-25-2006 15:31 :: ericnguyen :: Replies: **1** :: Views: **1210**

Capture range, ?ωL, is the range of frequencies were if the **frequency** of the reference signal, Sr, get into it, the **pll** will try to acquire lock in at most one period of the **natural** **frequency**, Wn.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-25-2006 20:20 :: Miguel Gaspar :: Replies: **2** :: Views: **1547**

hi
Can you pls explain the meaning and physical significance of the following terms which we usually use with **pll**.
1. **natural** **frequency** ( Wn)
2. Loop bandwidth. (Wc)
yours
SavithRu

Analog Circuit Design :: 06-20-2006 06:44 :: savithru :: Replies: **4** :: Views: **7013**

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