Uniform-phase uniform-amplitude resonant-load global clock distributions

This work presents a new approach to global clock distribution in which tree-driven grids are augmented with on-chip spiral inductors to resonate the clock capacitance. In this scheme, the energy of the fundamental frequency resonates between electric and magnetic forms, with the reduced admittance...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2005-01, Vol.40 (1), p.102-109
Main Authors: Chan, S.C., Shepard, K.L., Restle, P.J.
Format: Article
Language:English
Subjects:
Admittance
Applied sciences
Capacitance
Clock distribution
Clocks
CMOS technology
Design. Technologies. Operation analysis. Testing
Electronics
Exact sciences and technology
inductance
Inductors
Integrated circuits
Jitter
Magnetic devices
Magnetic resonance
Power measurement
resonant clocking
Resonant frequency
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
skew
Spirals
timing circuits
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Description
Summary:This work presents a new approach to global clock distribution in which tree-driven grids are augmented with on-chip spiral inductors to resonate the clock capacitance. In this scheme, the energy of the fundamental frequency resonates between electric and magnetic forms, with the reduced admittance of the clock network allowing for significantly lower gain requirements in the buffering network. The substantial improvements in jitter and power resulting from this approach are presented using measurement results from two test chips, one fabricated in a 90-nm and the other in a 0.18-/spl mu/m CMOS technology.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2004.838005