A high-selectivity (Q=100) SC bandpass filter centered at 100kHz is presented. The filter implements a 12th order transfer function whose poles are placed at only two frequencies. This aspects has been exploited in the realization using the cascade of 6 biquad cells. This improves the matching between different cells and, as a consequence, the frequency response accuracy. The filter is realized in a BiCMOS technology (LNMOS=4μm, L PMOS=3μm). For the available 20 samples, the center frequency mean-value error is lower than 0.2%, while the Q mean-value error is lower than 0.2%. © 1998 Editions Frontieres.
Baschirotto, A., Bollati, G., Fassina, A., Montecchi, F., Stefani, F. (1998). A Q=100 SC bandpass filter. In Proceedings of the 24th European Solid-State Circuits Conference, 1998. ESSCIRC '98 (pp.92-95). IEEE [10.1109/ESSCIR.1998.186216].
A Q=100 SC bandpass filter
BASCHIROTTO, ANDREA;
1998
Abstract
A high-selectivity (Q=100) SC bandpass filter centered at 100kHz is presented. The filter implements a 12th order transfer function whose poles are placed at only two frequencies. This aspects has been exploited in the realization using the cascade of 6 biquad cells. This improves the matching between different cells and, as a consequence, the frequency response accuracy. The filter is realized in a BiCMOS technology (LNMOS=4μm, L PMOS=3μm). For the available 20 samples, the center frequency mean-value error is lower than 0.2%, while the Q mean-value error is lower than 0.2%. © 1998 Editions Frontieres.
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