Substrate noise generated by digital circuits on mixed-signal ICs can disturb the sensitiveanalog/RF circuits, such as Low Noise Amplifier (LNA), sharing the same substrate. This paperinvestigates the adverse impact of the substrate noise on a high frequency cascode LNA laid out on alightly doped substrate. By studying the major noise coupling mechanisms, a new and efficientmodeling method is p...

The mixed-signal circuits with both analog and digital blocks on a single chip have wide applications in communication and RF circuits. Integrating these two blocks can cause serious problems especially in applications requiring fast digital circuits and high performance analog blocks. Fast switching in digital blocks generates a noise which can be introduced to analog circuits by the common su...

the mixed-signal circuits with both analog and digital blocks on a single chip have wide applications in communication and rf circuits. integrating these two blocks can cause serious problems especially in applications requiring fast digital circuits and high performance analog blocks. fast switching in digital blocks generates a noise which can be introduced to analog circuits by the common su...

This paper presents an efficient modeling method, based on the microstrip lines theory, for the coupling between a sub­strate backplane and a device contact. We derive simple closed-form formulas for rapid extraction of substrate parasitics. We use these formulas to model spiral inductors as important substrate-noise sources in mixed-signal systems. The proposed model is verified for the freque...

In mixed-signal designs, substrate coupling of digital circuit noise can severely compromise the behavior of sensitive analog circuits. Proper characterization of substrate noise is therefore indispensable. In this paper, we present an experimental setup for the characterization of directly coupled substrate noise in bulk-type CMOS. We have integrated configurable substrate noise generation and...

This work is concerned about the design process of high performance integrated circuits in presence of noise produced by large high-speed digital circuits in the same die. In a more specific context, it deals with the early estimation of the substrate and simultaneous switching noise produced by digital circuits, its propagation and, in minor extent, its impact in the noise sensitive radio freq...

Substrate noise effects caused by the integration of a DC-DC converter into a 0.13 μm CMOS technology integrated circuit are investigated in this paper. Simulations performed using the Substrate Noise Analyst tool show strong impact of switching and power supply noise on a sensitive analog block. The dependence of substrate noise coupling on physical separation distance, floorplanning and intro...