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Method to Measure On-Chip Power Supply Voltage

IP.com Disclosure Number: IPCOM000028514D
Original Publication Date: 2004-May-18
Included in the Prior Art Database: 2004-May-18

Publishing Venue

IBM

Abstract

The paper describes a successfully proven quantitative Method of local on-chip power supply voltage measurement. It utilizes randomly available quiet chip output circuits (signal drivers) to access the local on-chip power supply distribution network. The absolute differential power supply voltage measurement is a 2 step process, which eliminates any common mode on-chip noise as well as any externally coupled noise. The described scaling method allows to get true differential on-chip power supply voltage readings.