In this brief, a 28.8-MHz-3-dB frequency low-pass analog filter is presented. The filter synthesizes a fourth-order Butterworth transfer function, exploiting the well-known Sallen-Key (SK) biquadratic cell. The out-of-band zeros typically present in SK implementations are hereby completely canceled by using a low-power auxiliary path. This leads to a significant improvement of the stop-band rejection, at the cost of a small power for the same auxiliary path biasing. The design exhibits very large in-band IIP3 over the entire filter bandwidth (20 dBm at 10 MHz and 11 MHz), at 3.2-mW power consumption. The filter prototype has been designed in CMOS 0.18-μm technological node. The total area occupancy is 0.12 mm2 and the in-band integrated noise is 101 μVRMS.

DE MATTEIS, M., Resta, F., Pipino, A., D'Amico, S., Baschirotto, A. (2016). A 28.8-MHz 23-dBm-IIP3 3.2-mW Sallen-Key fourth-order filter with out-of-band zeros cancellation. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. II, EXPRESS BRIEFS, 63(12), 1116-1120 [10.1109/TCSII.2016.2619068].

A 28.8-MHz 23-dBm-IIP3 3.2-mW Sallen-Key fourth-order filter with out-of-band zeros cancellation

DE MATTEIS, MARCELLO
Primo
;
RESTA, FEDERICA;PIPINO, ALESSANDRA;BASCHIROTTO, ANDREA
2016

Abstract

In this brief, a 28.8-MHz-3-dB frequency low-pass analog filter is presented. The filter synthesizes a fourth-order Butterworth transfer function, exploiting the well-known Sallen-Key (SK) biquadratic cell. The out-of-band zeros typically present in SK implementations are hereby completely canceled by using a low-power auxiliary path. This leads to a significant improvement of the stop-band rejection, at the cost of a small power for the same auxiliary path biasing. The design exhibits very large in-band IIP3 over the entire filter bandwidth (20 dBm at 10 MHz and 11 MHz), at 3.2-mW power consumption. The filter prototype has been designed in CMOS 0.18-μm technological node. The total area occupancy is 0.12 mm2 and the in-band integrated noise is 101 μVRMS.
Articolo in rivista - Articolo scientifico
Active filters; Analog integrated circuits; Low power; Sallen-Key (SK); Super-source follower;
super-source follower, Active filters, analog integrated circuits, low power, Sallen-Key (SK), Filtering theory, Active filters, Information filters, Power filters, Frequency response, Transfer functions
English
1116
1120
5
DE MATTEIS, M., Resta, F., Pipino, A., D'Amico, S., Baschirotto, A. (2016). A 28.8-MHz 23-dBm-IIP3 3.2-mW Sallen-Key fourth-order filter with out-of-band zeros cancellation. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. II, EXPRESS BRIEFS, 63(12), 1116-1120 [10.1109/TCSII.2016.2619068].
DE MATTEIS, M; Resta, F; Pipino, A; D'Amico, S; Baschirotto, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/136792
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