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https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> Loop bandwidth https://designers-guide.org/forum/YaBB.pl?num=1228889655 Message started by raja.cedt on Dec 9th, 2008, 10:14pm |
Title: Loop bandwidth Post by raja.cedt on Dec 9th, 2008, 10:14pm hi, i have one question regarding loop bandwidth.i am designing a PLL whose fref=600Mhz.so i selected loop bandwidth 60MHZ for stability reasons.there are op amps in charge pump.so how to select op amp UGB's? Thank you. |
Title: Re: Loop bandwidth Post by SATurn on Dec 10th, 2008, 2:02pm Hello, If this amplifier in the charge pump affects the loop transfer characteristics, then its bandwidth should be selected high enough to make sure that the phase margin of the PLL does not degrade. SATurn |
Title: Re: Loop bandwidth Post by raja.cedt on Dec 11th, 2008, 12:30am hi, Thanks for your reply.i took 10 times than loop bandwidth.is it ok. |
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