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A Switched Decoupling Capacitor Circuit for On-Chip Supply Resonance Damping

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3 Author(s)
Jie Gu ; Minnesota Univ., Minneapolis ; Hanyong Eom ; Kim, C.H.

A low power switched decoupling capacitor circuit is proposed to suppress on-chip resonant supply noise. Compared to previous analog techniques, the proposed digital implementation achieves a 9X reduction in quiescent power with improved tolerance to PVT variation and tuning capability for optimal switching threshold. Measurements from a 0.13 mum test chip show an 11X boost in effective decap value and a 9.8 dB suppression in resonant supply noise by using the proposed circuit.

Published in:

VLSI Circuits, 2007 IEEE Symposium on

Date of Conference:

14-16 June 2007