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Low-Jitter CMOS Clock Distribution 

Microelectronics
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Prof. Tony Chan Carusone delivers a tutorial on the design of CMOS clock distribution circuits for low jitter. Clock jitter negatively affects the performance of sampling circuits such as high-speed wireline transceivers and data converters. In advanced nanoscale technologies, CMOS buffers (i.e. inverters) are increasingly being used for the distribution of multi-GHz clocks. This tutorial provides quantitative analyses of the main sources of jitter in CMOS clock distribution: power supply induced jitter, jitter generation, and jitter amplification.
Read all the details and cite this work via our open-access paper:
X. Mo, J. Wu, N. Wary and T. Chan Carusone, "Design Methodologies for Low-Jitter CMOS Clock Distribution," in IEEE Open Journal of the Solid-State Circuits Society, 2021. doi: 10.1109/OJSSCS.2021.3117930.
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26 июл 2024

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Комментарии : 10   
@romyaz1713
@romyaz1713 Год назад
thank you for this incredibly useful summary on jitter in cmos clocks
@crimsoncanvas51
@crimsoncanvas51 2 года назад
Posting from my wife's account. I went to description and found out this paper had also contribution from Nijm Wary, same 2012 batch passout.
@kunchen4871
@kunchen4871 Год назад
Jitter amplification and DCD can also be understood in the voltage domain: limited bandwidth of the distribution network attenuates the carrier frequency, making the dBc of the phase noise, spurs of the lower sideband larger. From a AM-to-PM conversion perspective, this means larger jitter.
@kunchen4871
@kunchen4871 Год назад
It also helps to explain the design of DCD correcting butffer
@arashyusefi1889
@arashyusefi1889 Месяц назад
Thanks 🙏👍💯😊
@zhouk01
@zhouk01 2 года назад
The long clock distribution wires are extracted by HFSS? How to convert the JIR to the jitter transfer function in slide 16?
@bail954032emily
@bail954032emily 2 года назад
Good video!. May I ask why duty cycle distortion contributes to high-frequency jitter amplification?
@Microelectronics-ChanCarusone
@Microelectronics-ChanCarusone 2 года назад
Duty cycle distortion (DCD) can be considered a kind of jitter that is periodic, arising on every alternate clock edge. Thus, it has a frequency equal to that of the clock signal itself. For example, a 10GHz clock signal with DCD will have a spur in its jitter spectrum at 10GHz.
@kunchen4871
@kunchen4871 Год назад
@@Microelectronics-ChanCarusone In voltage domain, DCD appears as a dc signal. If my understanding is correct, prof? Thank you!
@kunchen4871
@kunchen4871 Год назад
Intuitively, both the PSIJ and RJ can be viewed as interference imposed on the volage transitions, as a result, a sharp edge turns out to be more immune to these types of interferences.
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