Automated design of switched-current filters

This paper describes the automated design and synthesis of switched-current (SI) filters using SCADS, a flexible CAD system integrated in a major VLSI design suite. With this system, the nonspecialist can produce high performance analog filters suitable for mixed signal CMOS IC's fabricated usi...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 1996-07, Vol.31 (7), p.898-907
Main Authors: Hughes, J.B., Moulding, K.W., Richardson, J., Bennett, J., Redman-White, W., Bracey, M., Soin, R.S.
Format: Article
Language:English
Subjects:
Analog integrated circuits
CMOS analog integrated circuits
CMOS digital integrated circuits
CMOS integrated circuits
CMOS process
Design automation
Digital filters
Signal processing
Signal synthesis
Very large scale integration
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Summary:This paper describes the automated design and synthesis of switched-current (SI) filters using SCADS, a flexible CAD system integrated in a major VLSI design suite. With this system, the nonspecialist can produce high performance analog filters suitable for mixed signal CMOS IC's fabricated using only standard digital processes. To achieve high levels of performance on silicon, filter designs are realized using an enhanced differential circuit technique (S/sup 2/I) in its integrators and sample-and-hold cells. The design system is described in terms of the embedded circuits, its integrated tool set, the filter design flow and the engineering procedures for ensuring reliable circuit operation. Examples of high performance video frequency filters are presented, each generated automatically by SCADS within one day. Fabricated in a 0.8 /spl mu/m standard CMOS process, they demonstrate state-of-the-art performance.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.508201