SUBSTRATE WITH BUILT-IN CAPACITOR

摘要

PURPOSE:To reduce the occurrence of high-frequency switching noise which is generated when logic circuits are simultaneously switched by reducing the inductance between an LSI and a capacitor formed on a substrate. CONSTITUTION:A capacitor is formed so that the inductance between the bonding pad of an LSI mounted on a ceramic substrate 3 and the electrode 7 of the capacitor can be suppressed to 0.05nH. Since the inductance between the LSI and the capacitor is suppressed, the high-frequency component of the noise generated by power supply can be reduced. Therefore, the rise time of signals can be shortened and the operating can be increased.