Title :
On-chip active guard band filters to suppress substrate-coupling noise in analog and digital mixed-signal integrated circuits
Author :
Makie-Fukuda, K. ; Tsukada, T.
Author_Institution :
Semicond. & Integrated Circuits Group, Hitachi Ltd., Tokyo, Japan
Abstract :
An AC coupling configuration of active guard band filters can supply a substrate-coupling-noise cancellation signal to a ground-level substrate by using a single 3 V supply to on-chip circuits. Noise was suppressed to a maximum of less than 0.05 from 100 Hz to 2 MHz in a 0.35 /spl mu/m CMOS test chip. Experiments and a simulation based on the substrate model showed that the noise-suppression effect depends on the guard-band arrangement. The simulation is thus effective for optimizing the arrangement to strongly suppress noise effects.
Keywords :
CMOS integrated circuits; active filters; integrated circuit design; integrated circuit noise; interference suppression; mixed analogue-digital integrated circuits; 0.35 micron; 100 Hz to 2 MHz; 3 V; AC coupling configuration; CMOS test chip; analog/digital mixed-signal ICs; ground-level substrate; guard-band arrangement; mixed-signal integrated circuits; noise cancellation signal; noise-suppression effect; on-chip active guard band filters; substrate model; substrate-coupling noise suppression; Active filters; Active noise reduction; Circuit noise; Counting circuits; Coupling circuits; Digital circuits; Digital filters; Noise cancellation; Semiconductor device noise; Substrates;
Conference_Titel :
VLSI Circuits, 1999. Digest of Technical Papers. 1999 Symposium on
Conference_Location :
Kyoto, Japan
Print_ISBN :
4-930813-95-6
DOI :
10.1109/VLSIC.1999.797235
