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JellyWalker
Joined: 27 Dec 2007
Posts: 1
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 27 Dec 2007 17:59 about PLL loop bandwidth |
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| When mentioned that "loop bandwidth should exceed 10% of reference frequency", here does "loop bandwidth" stand for the bandwidth of OPEN Loop transfer function or Closed loop transfer function....or just the loop filter bandwidth? In case it is one of them, then is it 3-db bandwidth or unity gain bandwidth? thanks
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rania_hassan
Joined: 29 Apr 2005
Posts: 104
Helped: 8
Location: Egypt
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| 27 Dec 2007 19:18 Re: about PLL loop bandwidth |
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Hi,
Closed loop transfer function bandwidth
Rania
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khouly
Joined: 20 Oct 2003
Posts: 2468
Helped: 341
Location: EGYPT
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| 29 Dec 2007 14:07 about PLL loop bandwidth |
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agee with rania
it is the closed loop bandwidth
khouly
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qqic
Joined: 25 Aug 2006
Posts: 77
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| 03 Jan 2008 0:51 about PLL loop bandwidth |
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| the difference between open loop and close loop should be small
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ljw108
Joined: 06 Dec 2007
Posts: 6
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| 03 Jan 2008 6:33 Re: about PLL loop bandwidth |
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Hello,
I think closed loop transfer function and 3dB corner are right for your question.
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