Capacitance Super Multiplier for Sub-Hertz Low-Pass Integrated Filters

被引：17

作者：

Germanovix, Walter ^{[1
]}

Bonizzoni, Edoardo ^{[2
]}

Maloberti, Franco ^{[2
]}

机构：

[1] Univ Estadual Londrina, Dept Elect Engn, BR-86057970 Londrina, Brazil

[2] Univ Pavia, Dept Elect Comp & Biomed Engn, I-27100 Pavia, Italy

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2018年 / 65卷 / 03期

关键词：

Sub-Hertz; low-pass filter; capacitance multiplication; low power; RANGE;

D O I：

10.1109/TCSII.2017.2691010

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This brief addresses the design of tunable integrated low-pass filters for sub-Hertz frequencies. The required very large time constants are obtained by using the transconductance of MOS transistors with extremely low bias current and integrated capacitors whose value is augmented by a novel super multiplier circuit. Simulations at the transistor level using a 65-nm CMOS technology verify the effectiveness of the proposed techniques. It is shown that cut-off frequencies of 0.3 Hz require about 150 nA and 7 pF per single pole.

引用

页码：301 / 305

页数：5

共 12 条

[1]

Ruiz JA, 2010, IEEE INT SYMP CIRC S, P1304, DOI 10.1109/ISCAS.2010.5537257

[2] Programmable capacitance scaling scheme based on operational transconductance amplifiers [J].

Aguado-Ruiz, J. ;

Hernandez-Alvidrez, J. ;

Lopez-Martin, A. J. ;

Carvajal, R. G. ;

Ramirez-Angulo, J. .

ELECTRONICS LETTERS, 2009, 45 (03) :159-161

[3]

Bartolozzi Chiara, 2006, 2006 IEEE Biomedical Circuits and Systems Conference - Healthcare Technology (BioCas), P130, DOI 10.1109/BIOCAS.2006.4600325

[4] Exponential state space filters: A generic current mode design strategy [J].

Frey, DR .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 1996, 43 (01) :34-42

[5]

Gilbert B., 1990, IEE CIRCUITS SYSTEMS, V2

[6] Enhanced Grounded Capacitor Multiplier and Its Floating Implementation for Analog Filters [J].

Padilla-Cantoya, Ivan ;

Furth, Paul M. .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2015, 62 (10) :962-966

[7]

Pennisi S, 2002, ICES 2002: 9TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS, VOLS I-111, CONFERENCE PROCEEDINGS, P389, DOI 10.1109/ICECS.2002.1045415

[8] A Subhertz Nanopower Low-Pass Filter [J].

Rodriguez-Villegas, Esther ;

Casson, Alexander J. ;

Corbishley, Phil .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2011, 58 (06) :351-355

[9] A general translinear principle for subthreshold MOS transistors [J].

Serrano-Gotarredona, T ;

Linares-Barranco, B ;

Andreou, AG .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 1999, 46 (05) :607-616

[10] A 60-dB dynamic-range CMOS sixth-order 2.4-Hz low-pass filter for medical applications [J].

Solís-Bustos, S ;

Silva-Martínez, J ;

Maloberti, F ;

Sánchez-Sinencio, E .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 2000, 47 (12) :1391-1398

← 1 2 →