Title :
A low-power 84-dB dynamic-range tunable Gm-C filter for bio-signal acquisition
Author :
Junjie Lu ; Tan Yang ; Jahan, Md Sarwar ; Holleman, Jeremy
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA
Abstract :
A tunable Gm-C filter is presented for bio-signal acquisition application. It incorporates linear tunable transconductors utilizing MOSFETs biased in the triode region. Both the filter architecture and transconductor circuit design are optimized for good tuning, linearity and noise performance with low power consumption. The filter was fabricated in a 0.6 μm BiCMOS process, occupying 0.17 mm2. Measurement results show a tuning range of cut-off frequency from 2.5 kHz to 10 kHz. At 5 kHz cut-off frequency, the filter achieves a dynamic range of 85 dB with 1% THD, and consumes 75.9 μW from 3.3 V supply.
Keywords :
BiCMOS integrated circuits; bioelectric potentials; circuit tuning; low-power electronics; medical signal detection; power consumption; radiofrequency filters; signal detection; BiCMOS process; MOSFETs; THD; biosignal acquisition; filter architecture; frequency 2.5 kHz to 10 kHz; linear tunable transconductors; low power consumption; low-power dynamic-range tunable Gm-C filter; noise performance; power 75.9 muW; size 0.6 mum; transconductor circuit design; triode region; voltage 3.3 V; Gm-C filter; bio-signal acquisition; transconductor;
Conference_Titel :
Circuits and Systems (MWSCAS), 2014 IEEE 57th International Midwest Symposium on
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-4134-6
DOI :
10.1109/MWSCAS.2014.6908593
