Next Article in Journal
Untrimmed Low-Power Thermal Sensor for SoC in 22 nm Digital Fabrication Technology
Previous Article in Journal
A Survey of Neural Front End Amplifiers and Their Requirements toward Practical Neural Interfaces
Open AccessArticle

Ultra-Low Voltage Sixth-Order Low Pass Filter for Sensing the T-Wave Signal in ECGs

Electronics Laboratory, Physics Department, University of Patras, Rio Patras GR-26504, Greece
*
Author to whom correspondence should be addressed.
J. Low Power Electron. Appl. 2014, 4(4), 292-303; https://doi.org/10.3390/jlpea4040292
Received: 29 September 2014 / Revised: 18 November 2014 / Accepted: 19 November 2014 / Published: 26 November 2014
An ultra-low voltage sixth-order low pass filter topology, suitable for sensing the T-wave signal in an electrocardiogram (ECG), is presented in this paper. This is realized using a cascade connection of second-order building blocks constructed from a sinh-domain two-integrator loop. The performance of the filter has been evaluated using the Cadence Analog Design Environment and the design kit provided by the Austria Mikro Systeme (AMS) 0.35-µm CMOS process. The power consumption of filters was 7.21 nW, while a total harmonic distortion (THD) level of 4% was observed for an input signal of 220 pA. The RMS value of the input referred noise was 0.43 pA, and the simulated value of the dynamic range (DR) was 51.1 dB. A comparison with already published counterparts shows that the proposed topology offers the benefits of 0.5-V supply voltage operation and significantly improved power efficiency. View Full-Text
Keywords: CMOS analog integrated circuits; ultra-low voltage circuits; biomedical circuits; sinh-domain filters; ECG signal processing CMOS analog integrated circuits; ultra-low voltage circuits; biomedical circuits; sinh-domain filters; ECG signal processing
Show Figures

Figure 1

MDPI and ACS Style

Bertsias, P.; Psychalinos, C. Ultra-Low Voltage Sixth-Order Low Pass Filter for Sensing the T-Wave Signal in ECGs. J. Low Power Electron. Appl. 2014, 4, 292-303.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop