Galembeck, R.De Lima, J. A. [UNESP]Schneider, M. C.2014-05-272014-05-272004-09-07Proceedings - IEEE International Symposium on Circuits and Systems, v. 1.0271-4310http://hdl.handle.net/11449/67876A low-voltage low-power 2nd-order CMOS pseudo-differential bump-equalizer is presented. Its topology comprises a bandpass section with adjustable center frequency and quality factor, together with a programmable current amplifier. The basic building blocks are triode-operating transconductors, tunable by means of either a DC voltage or a digitally controlled current divider. The bump-equalizer as part of a battery-operated hearing aid device is designed for a 1.4V-supply and a 0.35μm CMOS fabrication process. The circuit performance is supported by a set of simulation results, which indicates a center frequency from 600Hz to 2.4kHz, 1≤Q≤5, and an adjustable gain within ±6dB at center frequency. The filter dynamic range lies around 40dB. Quiescent consumption is kept below 12μW for any configuration of the filter.engBandpass amplifiersElectric potentialPower electronicsTopologyTransconductanceTriodesWave filtersBump equalizersCMOS fabricationVoltage tuningCMOS integrated circuitsTrabalho apresentado em evento10.1109/ISCAS.2004.1328315Acesso aberto2-s2.0-4344619198