Title :
Symbolic Noise Analysis in Gm-C Filters
Author :
Sánchez-López, Carlos ; Tlelo-Cuautle, Esteban
Author_Institution :
Nat. Inst. of Astrophys., Opt. & Electron., Puebla
Abstract :
A procedure focused to the fully-symbolic noise analysis of continuous-time active filters consisting of operational transconductance amplifiers (OTAs) and capacitors is introduced. The proposed procedure is carried out by modeling each OTA by its nullor-based noise model. In this way, the total output noise density is evaluated by solving a linear system of equations. An illustrative example is described to show the usefulness of the proposed procedure to derive expressions for the fully-symbolic total output noise density. Finally, the derived expression is compared with Hspice noise simulations, which are in good agreement
Keywords :
capacitors; circuit noise; continuous time filters; operational amplifiers; Gm-C filters; capacitors; continuous-time active filters; fully-symbolic noise analysis; nullor-based noise model; operational transconductance amplifiers; Active filters; Active noise reduction; Band pass filters; Dynamic range; Equations; Integrated circuit noise; Linear systems; Optical filters; Optical noise; Voltage;
Conference_Titel :
Electronics, Robotics and Automotive Mechanics Conference, 2006
Conference_Location :
Cuernavaca
Print_ISBN :
0-7695-2569-5
DOI :
10.1109/CERMA.2006.88
