On-Chip di/dt Detector Circuit

Toru NAKURA
Makoto IKEDA
Kunihiro ASADA

Publication
IEICE TRANSACTIONS on Electronics   Vol.E88-C    No.5    pp.782-787
Publication Date: 2005/05/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.5.782
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Microelectronic Test Structures)
Category: 
Keyword: 
di/dt detector,  mutual inductor,  spiral inductor,  parasitic inductance,  power supply noise,  

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Summary: 
This paper demonstrates an on-chip di/dt detector circuit. The di/dt detector circuit consists of a power supply line, an underlying spiral inductor and an amplifier. The mutual inductor induces a di/dt proportional voltage, and the amplifier amplifies and outputs the value. The measurement results show that the di/dt detector output and the voltage difference between a resistor have good agreement. The di/dt reduction by a decoupling capacitor is also measured using the di/dt detector.