The design of an Active-G(m)-RC biquad low-pass cell is presented. The cell combines the advantage of G.-C filters (no parasitic poles) with the advantages of Active-RC filter (large linear range). As a prototype design, a second order low-pass filter with a pole frequency of 10 MHz and a unitary Q factor has been designed in a 0.18 mum CMOS technology with a 1.8 V supply voltage. The cell shows an IIP3 of 30 dBm at 1 MHz and an input referred noise of 30 nVrootHz while the power consumption is limited to 1.5 mW only. The filter 3(rd) parasitic pole is at 500 MHz. A digital tuning scheme with a 1.5% accuracy has been adopted

D'Amico, S., Baschirotto, A. (2003). An active-Gm-RC continuous-time biquad low-pass cell. In Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on (pp.551-554). IEEE [10.1109/ICECS.2003.1301844].

An active-Gm-RC continuous-time biquad low-pass cell

BASCHIROTTO, ANDREA
2003

Abstract

The design of an Active-G(m)-RC biquad low-pass cell is presented. The cell combines the advantage of G.-C filters (no parasitic poles) with the advantages of Active-RC filter (large linear range). As a prototype design, a second order low-pass filter with a pole frequency of 10 MHz and a unitary Q factor has been designed in a 0.18 mum CMOS technology with a 1.8 V supply voltage. The cell shows an IIP3 of 30 dBm at 1 MHz and an input referred noise of 30 nVrootHz while the power consumption is limited to 1.5 mW only. The filter 3(rd) parasitic pole is at 500 MHz. A digital tuning scheme with a 1.5% accuracy has been adopted
paper
1.5 mW; 1.8 V; CMOS technology; active-Gm-RC biquad low-pass cell; continuous time filters; digital tuning scheme; filter DC-gain; fully differential structure; large linear range; operational amplifier; pole frequency; second order low-pass filter; unitary Q factor; CMOS analogue integrated circuits; RC circuits; biquadratic filters; circuit tuning; continuous time filters; differential amplifiers; low-pass filters; low-power electronics; operational amplifiers
English
2003 10th IEEE International Conference on Electronics, Circuits and Systems, ICECS2003
2003
Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on
9780780381636
2003
2
551
554
301844
none
D'Amico, S., Baschirotto, A. (2003). An active-Gm-RC continuous-time biquad low-pass cell. In Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003 10th IEEE International Conference on (pp.551-554). IEEE [10.1109/ICECS.2003.1301844].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/36982
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