作者gggould (evanescent)
看板comm_and_RF
标题[问题] PLL loop bandwidth
时间Fri May 21 00:21:47 2010
When people say the bandwidth has to be less than 1/10 of Fref, which
bandwidth are we referring to?
a. loop filter 3dB bandwidth?
b. loop filter unity gain bandwidth?
c. close loop TF 3dB bandwidth?
d. close loop TF unity gain bandwidth?
e. open loop TF unity gain bandwidth?
Thanks
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 66.161.54.196
1F：推 titansan:c(~e) 140.112.17.104 05/21 02:08
2F：推 ginnyisme:想顺便请问一般问的PLL phase margin是 72.222.135.237 05/21 08:42
3F：→ ginnyisme:指哪一部份？replica bias的OP PM? 72.222.135.237 05/21 08:43
4F：→ ginnyisme:还是loop filter的PM？还是这问题太广? 72.222.135.237 05/21 08:43
5F：推 obov:open loop的phase margin 24.23.203.103 05/21 11:05
6F：→ gggould:Thanks a lot... 173.21.26.133 05/23 07:18