Feedforward Active Substrate Noise Cancelling Based on di/dt of Power Supply (Signal Integrity and Variability, <Special Section> VLSI Design Technology in the Sub-100nm Era)

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概要

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• This paper demonstrates a feedforward active substrate noise cancelling technique using a power supply di/dt detector. Since the substrate is usually tied with the ground line with a low impedance, the substrate noise is closely related to the ground bounce which is proportional to the di/dt when inductance is dominant on the ground line impedance. Our active cancelling detects the di/dt of the power supply, and injects an anti-phase current into the substrate so that the di/dt-proportional substrate noise is cancelled out. Our first trial shows that 34% substrate noise reduction is achieved on our test circuit, and the theoretical analysis shows that the optimized canceller design will enhance the substrate noise suppression ratio up to 56%.

• 社団法人電子情報通信学会の論文

著者

• Nakura Toru

  Univ. Tokyo Tokyo Jpn

• Nakura Toru

  The Dept. Of Electronic Engineering The Univ. Of Tokyo

• Ikeda Makoto

  The Vlsi Design And Education Center The University Of Tokyo

• Ikeda Makoto

  Dept. Of Engineering University Of Tokyo:vlsi Design And Education Center University Of Tokyo

• Asada K

  Dept. Of Engineering University Of Tokyo:vlsi Design And Education Center University Of Tokyo

• Asada K

  Department Of Electronic Engineering And Vlsi Design And Education Center (vdec) The University Of T

• Asada Kunihiro

  The Vlsi Design And Education Center The University Of Tokyo

• Ikeda M

  Department Of Electonics Engineering Graduate School Of Engineering The University Of Tokyo

• Asada K

  Department Of Electonics Engineering Graduate School Of Engineering The University Of Tokyo

• Ikeda Makoto

  The Vlsi Design And Education Center (vdec) The University Of Tokyo

• Asada Kunihiro

  The Vlsi Design And Education Center (vdec) The University Of Tokyo

• ASADA Kunihiro

  The VLSI chip in this study has been fabricated in the chip fabrication program of VLSI Design and Education Center (VDEC)

• NAKURA Toru

  the Department of Electrical Engineering and Information Systems, The University of Tokyo

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