Title :
A 3.3 V tunable current-mode square-root domain biquad
Author :
López-Martín, Antonio J. ; Carlosena, Alfonso
Author_Institution :
Dept. Ingenieria Electr. y Electron., Univ. Publica de Navarra, Pamplona, Spain
Abstract :
A current-mode companding biquad based on the quasi-quadratic MOST large-signal characteristics in strong inversion is presented. It is derived from an externally equivalent Gm-C biquad by a simple component-to-component substitution. The nonlinear blocks required are based on simple MOS TL loops, leading to a very regular structure. Measurement results from a 2.4-μm CMOS IC implementation are presented
Keywords :
CMOS analogue integrated circuits; biquadratic filters; circuit tuning; compandors; current-mode circuits; 2.4 mum; 3.3 V; 6 mW; CMOS IC implementation; MOS TL loops; component-to-component substitution; current-mode companding biquad; externally equivalent Gm-C biquad; nonlinear blocks; quasi-quadratic MOST large-signal characteristics; regular structure; strong inversion; tunable current-mode square-root domain biquad; CMOS integrated circuits; Dynamic range; Equations; Linear systems; Linearity; MOSFETs; Nonlinear filters; Signal design; Topology; Voltage;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857349
