High performance analog VLSI computational circuits

Author

Zarabadi, Seyed R. ; Ismail, Mohammed ; Hung, Chung-Chih

Author_Institution

Delco Electron. Corp., Kokomo, IN, USA

Volume

33

Issue

4

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

644

Lastpage

649

Abstract

Simple linear voltage/current-controlled voltage-to-current (V-T) converters, which are to first-order insensitive to the threshold voltage variation, are introduced. The circuits can be used as basic building blocks to construct simple analog computational circuits, which can perform functions such as square rooting, squaring, multiplication, sum of squares, difference of squares, etc. Some of the key features are: good linearity, floating inputs [high common-mode rejection ratio (CMRR)], simplicity, and good transconductance tuning range. The circuits can be realized with CMOS devices in saturation, however, BiCMOS devices extend their speed and input voltage range. Realistic simulations and experimental results clearly demonstrate the claims

Keywords

BiCMOS analogue integrated circuits; CMOS analogue integrated circuits; VLSI; analogue processing circuits; BiCMOS device; CMOS device; analog VLSI computational circuit; common-mode rejection ratio; difference of squares; floating input; linearity; multiplication; saturation; square rooting; squaring; sum of squares; threshold voltage; transconductance tuning range; voltage-to-current converter; Analog computers; BiCMOS integrated circuits; Bipolar transistors; CMOS process; High performance computing; Mirrors; Signal processing; Threshold voltage; Transconductance; Very large scale integration;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/4.663572

Filename

663572