De Lima, J. A.Alcaide, F. M.2014-05-202014-05-202004-01-012004 IEEE International Symposium on Circuits and Systems, Vol 1, Proceedings. New York: IEEE, p. 21-24, 2004.http://hdl.handle.net/11449/39298This 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 differencebeta - gamma in the Q-factor denominator, setting the Q-sensitivity to tuning voltages around unity. A 30-MHz filter was designed based on a 0.35 mum CMOS process and V-DD=3.3 V. 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 triode-operating OTA is used, the procedure can be extended to other types of transconductor.21-24engTrabalho apresentado em eventoWOS:000223122300006Acesso aberto