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Distributed Differential Oscillators for Global Clock Networks
- Source :
- IEEE Journal of Solid-State Circuits. 41:2083-2094
- Publication Year :
- 2006
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2006.
-
Abstract
- This paper presents a distributed differential oscillator global clock network where the clock capacitance is rendered resonant with a set of on-chip spiral inductors. The clock amplitude and clock phase are both uniform across the entire global distribution, making this design scalable and compatible with existing local clocking methodologies. The resonant network, combined with phase averaging of the distributed oscillator, provides high immunity to process-, voltage-, and temperature-variation-induced timing uncertainty. Measurement results from a prototype design implemented in a 0.18-mum CMOS technology show almost an order of magnitude less jitter and power than a traditional tree-driven grid global clock distribution. On-chip measurement circuits are used to characterize the jitter on the test chip, while a simulation model is used to examine skew and higher-order resonances in the resonant clock network
- Subjects :
- Engineering
business.industry
Clock drift
Electrical engineering
Clock gating
Hardware_PERFORMANCEANDRELIABILITY
Digital clock manager
Clock skew
Clock network
Computer Science::Hardware Architecture
Clock angle problem
Hardware_GENERAL
Clock domain crossing
Hardware_INTEGRATEDCIRCUITS
Electronic engineering
Electrical and Electronic Engineering
business
CPU multiplier
Subjects
Details
- ISSN :
- 00189200
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- IEEE Journal of Solid-State Circuits
- Accession number :
- edsair.doi...........68aa8df5ca23bf6314490c4f3d0309d1