This paper presents a design procedure for high-order continuous time low-pass filters based on the cascade of biquadratic cells. The proposed approach is amenable for integration, as it takes into account the maximum capacitance spread imposed by the available technology, and also allows a tradeoff between noise and maximum linear range to be met, thereby improving the dynamic range. Simulations both at system and transistor level are provided confirming the effectiveness of the procedure. Compared to the standard design approach of a 10-pole Gm-C filter and using a 65-nm CMOS process, the proposed approach achieves a noise reduction from 8.2 mVrms to 4.9 mV rms and a dynamic range improvement of 4.1dB. The paper is also useful as a tutorial for the effect of noise in multi-stage biquad filters. © 2011 IEEE.

Design strategy for biquad-based continuous-time low-pass filters / Monsurro', Pietro; Salvatore, Pennisi; Scotti, Giuseppe; Trifiletti, Alessandro. - (2011), pp. 385-388. (Intervento presentato al convegno 2011 20th European Conference on Circuit Theory and Design, ECCTD 2011 tenutosi a Linkoping nel 29 August 2011 through 31 August 2011) [10.1109/ecctd.2011.6043367].

Design strategy for biquad-based continuous-time low-pass filters

MONSURRO', PIETRO;SCOTTI, Giuseppe;TRIFILETTI, Alessandro
2011

Abstract

This paper presents a design procedure for high-order continuous time low-pass filters based on the cascade of biquadratic cells. The proposed approach is amenable for integration, as it takes into account the maximum capacitance spread imposed by the available technology, and also allows a tradeoff between noise and maximum linear range to be met, thereby improving the dynamic range. Simulations both at system and transistor level are provided confirming the effectiveness of the procedure. Compared to the standard design approach of a 10-pole Gm-C filter and using a 65-nm CMOS process, the proposed approach achieves a noise reduction from 8.2 mVrms to 4.9 mV rms and a dynamic range improvement of 4.1dB. The paper is also useful as a tutorial for the effect of noise in multi-stage biquad filters. © 2011 IEEE.
2011
2011 20th European Conference on Circuit Theory and Design, ECCTD 2011
cmos active filters; continuous time filters; dynamic range; gm-c; noise; pulse shaping
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Design strategy for biquad-based continuous-time low-pass filters / Monsurro', Pietro; Salvatore, Pennisi; Scotti, Giuseppe; Trifiletti, Alessandro. - (2011), pp. 385-388. (Intervento presentato al convegno 2011 20th European Conference on Circuit Theory and Design, ECCTD 2011 tenutosi a Linkoping nel 29 August 2011 through 31 August 2011) [10.1109/ecctd.2011.6043367].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/491806
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