Multi-Path Analog Circuits Robust to Digital Substrate Noise

Shigetaka TAKAGI  Retdian AGUNG NICODIMUS  Kazuyuki WADA  Takahide SATO  Nobuo FUJII  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E91-A   No.2   pp.535-541
Publication Date: 2008/02/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e91-a.2.535
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
multi-path structure,  balanced-type circuit,  digital substrate noise,  low-pass filter,  

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A multi-path structure is proposed for reduction in effect of digital substrate noise which degrades analog circuit performance. As an example low-pass filters are implemented in a 0.18-µm CMOS process. 11-dBm reduction in digital substrate noise is achieved as compared with a conventional structure.