A novel digitally controlled CMOS current follower for low voltage low power applications

Author

Elwan, Hassan O. ; Ismail, Mohammed

Author_Institution

Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA

Volume

2

fYear

1998

fDate

31 May-3 Jun 1998

Firstpage

335

Abstract

In this paper fully differential digitally controlled analog library cells are given. The proposed cells are based on a novel digitally controlled current follower (DCCF) circuit. The proposed circuits are useful for low voltage low power high frequency applications. The DCCF operates from a 3 V supply in class AB mode and provides a bandwidth of 80 MHz in 1.2 μm CMOS technology. Owing to the class AB operation of the DCCF circuit the standby current is below 94 μA. The proposed circuit is used to realize digitally controlled weighted sum transconductors and MOSFET-C filters. APLAC simulations based on the AMI 1.2 μm n-well level 3 parameters are in agreement with the presented work

Keywords

CMOS analogue integrated circuits; active filters; digital control; 1.2 micron; 3 V; 80 MHz; AMI; APLAC simulation; DCCF circuit; MOSFET-C filter; analog library cell; class AB mode; differential digitally controlled CMOS current follower; low voltage low power high frequency circuit; weighted sum transconductor; Bandwidth; CMOS technology; Circuits; Digital control; Frequency; Low voltage; Software libraries; Transconductors; Voltage control; Weight control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on

Conference_Location

Monterey, CA

Print_ISBN

0-7803-4455-3

Type

conf

DOI

10.1109/ISCAS.1998.706933

Filename

706933