Designing an Inverter-based Operational Transconductance Amplifer-capacitor Filter with Low Power Consumption for Biomedical Applications
DOI: 10.4103/jmss.JMSS_8_17
Abstract
implementing continuous‑time flters. It is particularly important to design a universal OTA-C flter
capable of generating the desired flter response via a single structure, thus reducing the flter circuit
power consumption as well as noise and the occupied space on the electronic chip. In this study,
an inverter-based universal OTA-C flter with very low power consumption and acceptable noise
was designed with applications in bioelectric and biomedical equipment for recording biomedical
signals. The very low power consumption of the proposed flter was achieved through introducing
bias in subthreshold MOSFET transistors. The proposed flter is also capable of simultaneously
receiving favorable low-, band-, and high-pass flter responses. The performance of the proposed
flter was simulated and analyzed via HSPICE software (level 49) and 180 nm complementary
metal-oxide-semiconductor technology. The rate of power consumption and noise obtained from
simulations are 7.1 nW and 10.18 nA, respectively, so this flter has reduced noise as well as power
consumption. The proposed universal OTA‑C flter was designed based on the minimum number of
transconductance blocks and an inverter circuit by three transconductance blocks (OTA).
Keywords
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Mahmoud SA, Bamakhramah A, Al-Tunaiji SA. Low-noise low-pass filter for ECG portable detection systems with digitally programmable range. Circuits Syst Signal Process 2013;32:2029-45.
Casson AJ, Rodriguez VE. A 60 pW gm-C continuous wavelet transform circuit for portable EEG systems. IEEE J Solid State Cir 2011;56:1406-15.
Yang M, Liu J, Xiao Y, Liao Y. Fourth-order band-pass filter for biomedical applications. Electron Lett 2010;46:973-4.
Kumngern M, Knobnob B, Dejhan K. Electronically tunable high-input impedance voltage-mode universal biquadratic filter based on simple CMOS OTAs. AEU Int J Electron Commun 2010;64:934-9.
Shuenn-Yuh Lee, Chih-Jen Cheng. Systematic design and modeling of a OTA-C filter for portable ECG detection. IEEE Trans Biomed Circuits Syst 2009;3:53-64.
Psychalinos C. Log-domain SIMO and MISO low-voltage universal biquads. Analog Integr Circuits Signal Process 2010;67:201-11.
Tangsrirat W. Low-voltage digitally programmable current-mode universal biquadratic filter. AEU Int J Electron Commun 2008;62:97-103.
Chen HP, Shen SS, Wang JP. Electronically tunable versatile voltage-mode universal filter. AEU Int J Electron Commun 2008;62:316-9.
Takao T, Edasaki S, Yasuaki S, Fukui Y. Current-mode universal biquad filter using OTAs and DO-CCII. Frequenz 2006;60:237-40.
Barthelemy H, Meillère S, Gaubert J, Dehaese N, Bourdel S. OTA based on CMOS inverters and application in the design of tunable bandpass filter. Analog Integr Circuits Signal Process 2008;57:169-78.
Lo TY, Hungm CC. A 1 GHz equiripple low-pass filter with a high-speed automatic tuning scheme. IEEE Trans Very Large Scale Int Sys 2011;19:175-81.
Pirmohammadi A, Zarifi MH. A low power tunable Gm-C filter based on double CMOS inverters in 0.35. Analog Integr Circuits Signal Process 2011;71:473-9.
Hasio CL, Huang RB. An ultra low-power OTA-C Bandpass filter design for ECG application. Int J Comput Electr Eng 2012;4:867-9.
Arya R, Souliotis G, Vlassis S, Psychalinos C. A 0.5 V 3rd-order Tunable gm-C Filter. Radio Eng 2013;22:174-8.
Bhaskar DR, Singh AK, Sharma RK, Senani R. New OTA-C universal current-mode/trans-admittance biquads. IEICE Electr Express 2005;2:8-13.
Chang CM, Pai SK. Universal current-mode OTA-C biquad with the minimum components. IEEE Trans Circuits Syst I Fundam Theory Appl 2000;47:1235-8.
Garcia-Alberdi C, Lopez-Martin AJ, Acosta L, Carvajal RG, Ramirez-Angulo J. Tunable class AB CMOS Gm-C fi lter based on quasi floating gate techniques. IEEE Trans Circuits Syst I Regul Pap 2013;60:1300-9.
Chen HP, Liao YZ, Lee WT. Tunable mixed-mode OTA-C
universal filter. Analog Integr Circuits Signal Process 2008;58:135-41.
Sawigun C, Ngamkham W, Serdijn JW. A 2.6nW, 0.5V, 52dB-DR, 4th-Order Gm-C BPF: Moving closer to the FOMs fundamental limit. in 2012. IEEE Int Symp Circuits Syst 2012;41:656-9.
Odame K, Anderson D, Hasler P. A bandpass filter with inherent gain adaptation for hearing applications. IEEE Trans Circuits Syst I Regul Pap 2008;55:786-95.
Salthouse CD, Sarpeshkar R. 14.4 nW fourth-order bandpass filter for biomedical applications. Electr Lett 2010;16:973-4.
Sawigun C, Ngamkham W, Serdijn WA. A 0.5-V, 2-nW, 55-dB
DR, fourth-order bandpass filter using single branch biquads: An efficient design for FOM enhancement. Microelectronics J 2014;45:367-74.
Sundarasaradula Y, Thanachayanont A. A 1-V, 6-nW programmable 4th-order bandpass filter for biomedical applications. Analog Integr Circuits Signal Process 2016;21:1-10.
Zhang TT, Mak PI, Vai MI, Mak PU, Law MK, Pun SH, et al. 15-nW Biopotential LPFs in 0.35 CMOS using sub-threshold-source-follower biquads with and without gain compensation. IEEE Trans Circuits Syst I Regul Pap 2013;7:690-702.
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