Crosstalk effects in mixed-signal ICs in deep submicron digital CMOS technology

This paper illustrates the crosstalk phenomenon and its impact on the desig n of mixed analog/digital circuits with high accuracy specifications. Gener ation of digital disturbs, propagation through the substrate, and effects o n analog devices are considered, with particular emphasis on integrated cir cuits realized on heavily doped substrate, where traditional shielding is l ess effective. Techniques to reduce analog/digital crosstalk are reviewed a nd discussed. A simple modeling approach is presented, suitable for the ana lysis of crosstalk effects using a conventional electrical simulator (SPICE ). Experimental results on a test chip are presented to validate the modeli ng approach. (C) 2000 Elsevier Science Ltd. All rights reserved.