Phase margin of the OPAMP - Forum for Electronics
2017年12月27日 · The phase of the loop gain must start at -180 deg for negative feedback (when the phase inversion within the loop is taken into account). Thats all. For finding the phase …
Phase margin greater than 90 - Forum for Electronics
2008年1月4日 · Agree with Braski. Generally you talk about phase margin when your feedback loop reaches a gain of zero. You want to maintain some positive phase margin at that point, …
Why we choose phase margin of 45 or 60 degrees?
2005年1月9日 · Re: Phase margin It can be proved as a general case that given a phase margin of 60° the amplifier's step response will not have any peaking, thus very less possibility for it to …
How to determine the phase margin of an opamp in Cadence?
2006年6月16日 · phase margin in cadence calculator Run AC analysis, View waveform of gain and phase then measure phase at 0dB gain this will give you the phase margin. 60º phase …
SMPS LT Spice Simulation - Gain/Phase Margins - Forum for …
2015年6月9日 · The phase margin stability criterion is valid for loop gain characteristics with single crossover, as the present one is. In case of multiple crossover, you have to check the …
Phase Margin Measurement in HSPICE | Forum for Electronics
2011年3月2日 · The phase response in your diagram starts at ZERO deg. That means, you did NOT simulate the complete open loop, but only the series combination of all loop components …
[SOLVED] - Bode Plot - Phase Margin (Magnitude start from 0 …
2013年12月19日 · From Fig X we could observe that, the Gain Margin=15.9 db. With gain crossover frequency = 7.62x103 rad.sec-1, and Phase Margin=88.8 deg. With phase …
How to simulate Bandwidth and Phase Margin of a PLL
2005年3月9日 · I am designing a 400-800MHz PLL. I have calculated Bandwidth and Phase Margin of the PLL. But I donot know how to understand Bandwidth and Phase Margin of PLL. …
plot gain and phase margin in cadence | Forum for Electronics
2008年4月26日 · ac analysis break loop Hi! I’m trying to design, in Cadence, a single-ended CMOS AMPOP and I need to make a ac analysis. Actually, I’m using this schematic as a test …
[SOLVED] - Gain and Phase Margin (Folded Cascode
2011年12月9日 · Phase Margin: >45deg Gain: >60dB At this point, my design is embarrassing. I can only get the voltage up to 50dB. And the phase margin is worse -39deg I know that the A= …