RF Coupling in CMOS Analog Integrated Circuits

摘要

This paper presents the susceptibility of CMOS analog integrated circuits to electromagnetic interferences (EMIs) The disturbances are superimposed to an adjacent line (aggressor line) and couple via capacitive coupling mechanisms to a sensitive track of an analog circuit (victim line). For this purpose various circuits have been designed and manufactured in a Bipolar-CMOS-DMOS-technology (BCD) for automotive applications. Actuating variables that influence the susceptibility of nets are discussed. Ones sensitive nets are known routing strategies or filtering can be applied to increase the immunity of the endangered analog circuit which results consequently in an immunity increase of the integrated circuit.