De Lima, Jader A. [UNESP]Alcaide, Fernando M. [UNESP]2014-05-272014-05-272004-09-07Proceedings - IEEE International Symposium on Circuits and Systems, v. 1.0271-4310http://hdl.handle.net/11449/67874This paper discusses a design approach for a high-Q low-sensitivity OTA-C biquad bandpass section. An optimal relationship is established between transconductances defining the differenceβ - γ in the Q-factor denominator, setting the Q-sensitivity to tuning voltages around unity. A 30-MHz filter was designed based on a 0.35μn CMOS process and VDD=3.3V. A range of circuit simulation supports the theoretical analysis. Q-factor spans from 20.5 to 60, while ensuring filter stability along the tuning range. Although a Mode-operating OTA is used, the procedure can be extended to other types of transconductor.engAspect ratioCMOS integrated circuitsComputer simulationElectric potentialIntegrated circuit layoutQ factor measurementSensitivity analysisTransconductanceTriodesTuningBiquad loopsCircuit simulationFilter DesignsFilter stabilityBandpass filtersTrabalho apresentado em evento10.1109/ISCAS.2004.1328121Acesso aberto2-s2.0-4344706334