Title :
Realization of low power wide-band analog systems using a CMOS transconductor
Author :
Guo, Ning ; Raut, Rabin
Author_Institution :
Dept. of Electr. Eng., Concordia Univ., Montreal, Que., Canada
fDate :
9/1/1998 12:00:00 AM
Abstract :
The case of low power wide-band analog systems built with CMOS transconductors is addressed. The technique consists of optimizing the performance of a CMOS transconductor for wide-band operation with low dc power consumption. This unfolds the opportunity of realizing analog systems (such as a filter) which minimize the power dissipation for a given bandwidth or maximize the bandwidth for a given dc power consumption. Theoretical analyses leading to the optimal solutions for a specific CMOS transconductor are presented. These results are substantiated by HSPICE simulation for a 0.8-μm BiCMOS process. The application of the technique is illustrated by considering realization of several gm-C biquadratic filters and the tradeoff between power dissipation and operating bandwidth is discussed. The results are important because of recent interests in low-power wide-band CMOS VLSI systems
Keywords :
BiCMOS analogue integrated circuits; CMOS analogue integrated circuits; SPICE; VLSI; band-pass filters; biquadratic filters; circuit analysis computing; integrated circuit design; low-pass filters; 0.8 mum; BiCMOS process; CMOS VLSI systems; CMOS transconductor; HSPICE simulation; bandpass filter; biquadratic filters; dc power consumption; filter; low power wide-band analog systems; low-pass filter; optimal solutions; performance optimization; power dissipation minimization; power dissipation/operating bandwidth tradeoff; Bandwidth; Circuits; Energy consumption; Filters; MOSFETs; Power dissipation; Transconductance; Transconductors; Very large scale integration; Wideband;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
