Design of low-power and low-voltage log-domain filters

Author

Yang, Fuji ; Enz, Christian ; Van Ruymbeke, Gilles

Author_Institution

Electron. Lab., Swiss Federal Inst. of Technol., Lausanne, Switzerland

Volume

1

fYear

1996

fDate

12-15 May 1996

Firstpage

117

Abstract

This paper describes a component-level mapping between linear- and log-domain filters. A modified multiple input class AB log-integrator with both f- and Q-tuning is presented. A 3^rd-order elliptic filter derived from a LC ladder prototype is designed using the proposed log building blocks and including the log-domain implementation of the transmission zero. Simulated frequency responses, THD and SNR, obtained from large signal transient analysis, are given. The filter is designed for a 2 V supply and consumes 1.3 mW for a cutoff frequency of 10 MHz. It can easily be frequency tuned from 1 MHz to 30 MHz

Keywords

Q-factor; active filters; circuit tuning; elliptic filters; frequency response; linear network synthesis; radiofrequency filters; transient analysis; 1 to 30 MHz; 1.3 mW; 2 V; LC ladder prototype; LV log-domain filters; Q-tuning; SNR; THD; component-level mapping; elliptic filter; frequency responses; frequency tuning; large signal transient analysis; low-power filters; low-voltage filter; multiple input class AB log-integrator; transmission zero; Circuits; Dynamic range; Electronic mail; Energy consumption; Filtering theory; Filters; Frequency; Laboratories; Prototypes; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3073-0

Type

conf

DOI

10.1109/ISCAS.1996.539822

Filename

539822