A resistor/transconductor network for linear fitting

Author

Shi, Bertram E. ; Gao, Lina ; Lau, Kwok Kit

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong

Volume

47

Issue

4

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

322

Lastpage

331

Abstract

We present a continuous time analog VLSI CMOS circuit consisting of resistors and transconductors for computing the best-fit line to a set of data points. The circuit can implement standard least-squares linear fitting, as well as a form of linear fitting that is more robust to outliers. We analyze the static and transient response of the chip, and present design criteria given desired constraints on speed and accuracy. Finally, we describe the transistor level design and measurement results from a 50-input prototype fabricated using a 1.2 μm n-well process

Keywords

CMOS analogue integrated circuits; VLSI; analogue processing circuits; continuous time systems; curve fitting; integrated circuit design; least squares approximations; parallel architectures; transient response; 1.2 micron; analog VLSI CMOS circuit; continuous time CMOS circuit; data points; design criteria; linear fitting application; n-well CMOS process; resistor/transconductor network; standard least-squares linear fitting; static response; transient response; transistor level design; Analog computers; CMOS analog integrated circuits; Fitting; Prototypes; Resistors; Robustness; Semiconductor device measurement; Transconductors; Transient response; Very large scale integration;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.839668

Filename

839668