A configurable 32nd order low voltage low power digital filter for portable communications systems

Author

Suvakovic, Dusan ; Salama, C. Andre T

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada

Volume

2

fYear

1998

fDate

31 May-3 Jun 1998

Firstpage

25

Abstract

A low power 32nd order digital filter for portable audio applications has been designed and implemented in a single threshold 1 V, 0.5 μm CMOS process. The design is full custom, using a combination of conventional CMOS and pass transistor circuits, optimized for low energy consumption and small area. The filter features up to 16 biquad sections with programmable coefficients and performs fixed-point computations with 16-bit resolution. The measured average energy consumption of 330 pJ per biquad computation indicates that the implementation of complex DSP in a single threshold low voltage process is a viable alternative for implementations in multiple threshold processes

Keywords

CMOS digital integrated circuits; audio equipment; biquadratic filters; digital filters; digital signal processing chips; mobile communication; programmable filters; 0.5 micron; 1 V; 330 pJ; DSP; area; biquad sections; configurable 32nd order low voltage low power digital filter; custom design; energy consumption; fixed-point computation; pass transistor circuit; portable audio communication system; programmable coefficients; single threshold CMOS process; CMOS process; Circuits; Design optimization; Digital filters; Digital signal processing; Energy consumption; Energy measurement; Energy resolution; Low voltage; Process design;

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.1998.706801

Filename

706801