Switched capacitor and active-RC filter layout using a parameterizable generator

Author

Kaneko, Takao ; Akazawa, Yukio ; Nagatani, Mitsuyoshi

Author_Institution

NNT LSI Lab., Kanagawa, Japan

fYear

1991

fDate

11-14 Jun 1991

Firstpage

2012

Abstract

An automatic macrocell generator has been developed and applied to the analog layout of switched-capacitor (SC) and active-RC filters. The generator consists of a process-independent generation procedure, a leafcell library, and a circuit description of the leafcells. The unit element arrays of the whole filter are generated together to minimize the array height of the entire filter macrocell, so that the area of the generated filter is as small as that of a manually laid out filter. Three SC filters and one active-RC filter were designed and fabricated by 1.5-μm CMOS technology and successfully yielded a signal-to-noise (S/N) ratio of more than 70 dB with a quick turnaround time

Keywords

CMOS integrated circuits; active filters; cellular arrays; circuit layout CAD; switched capacitor filters; 1.5 micron; 70 dB; CMOS; SC filters; SNR; active-RC filters; analog layout; automatic macrocell generator; circuit description; circuit layout; height minimisation; leafcell library; parameterizable generator; process-independent generation procedure; quick turnaround time; signal to noise ratio; unit element arrays; CMOS technology; Capacitors; Circuits; Filters; Laboratories; Large scale integration; Libraries; Macrocell networks; Operational amplifiers; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176060

Filename

176060