Title :
1 V compact class-AB CMOS log filters
Author :
Redondo, X. ; Serra-Graells, F.
Author_Institution :
Inst. de Microelectron. de Barcelona, CSIC, Barcelona, Spain
Abstract :
The paper proposes new circuit design techniques to implement very low-power and compact CMOS log-domain filters. The new approach is based on low-voltage topologies and low-current class-AB operation, combined with strong circuit reductions. The paper includes all the required basic building blocks for the synthesis of arbitrary log filters, such as signal input splitting and compression, differential integration with common-mode feedback (CMFB) and output expansion. Also, a comparative filter design example at 1 V is given for a standard 0.35 μm CMOS technology.
Keywords :
CMOS analogue integrated circuits; active filters; circuit feedback; integrated circuit design; low-power electronics; network topology; 0.35 micron; 1 V; circuit design techniques; common-mode feedback; compact CMOS filters; compact class-AB CMOS log filters; differential integration; log-domain filters; low-current operation; low-power filters; low-voltage topologies; output expansion; CMOS technology; Circuit synthesis; Circuit topology; Compressors; Filtering; Filters; Integrated circuit modeling; Integrated circuit technology; Signal synthesis; Voltage;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465008
