IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa
Prevention in a Chip of EMI Noise Caused by X'tal Oscillator
Atsushi KUROKAWAHiroshi FUJITATetsuya IBE
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2008 Volume E91.A Issue 4 Pages 1077-1083


Developing LSIs with EMI suppression, particularly for use in automobiles, is important for improving warranties and customer acquisition. First, we describe that the measures against EMI noise caused by a X'tal oscillator are important. Next, we present a practical method for analyzing the noise with models of the inside and outside of a chip. In addition, we propose a within-chip measure against EMI noise that takes chip cost into account. The noise is suppressed by using an appropriate resistance and capacitance on the power line. Simulation results demonstrated the method's effectiveness in suppressing noise.

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© 2008 The Institute of Electronics, Information and Communication Engineers
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