Publication detail

16-nW 0.5-V low-pass filter for bio-signal applications

PHATSORNSIRI, P. KUMNGERN, M. KHATEB, F. TORTEANCHAI, U. WONGPROMMOON, N. KULEJ, T.

Original Title

16-nW 0.5-V low-pass filter for bio-signal applications

Type

journal article in Web of Science

Language

English

Original Abstract

A low-voltage, ultra-low power fully differential low-pass filter for bio-signal applications using multiple-input fully differential operational transconductance amplifiers (OTA) is presented in this article. The multiple inputs of OTA can be achieved using multiple-input dynamic threshold MOS transistor (MIDT-MOST) technique. The novelty of this work is to exhibit the proposed filter using multiple-input OTAs, which leads to a reduction in the number of active OTAs and power consumption. The fourth-order low-pass filter that is cascaded by two second-order filters has been presented. The fourth-order low-pass filter is designed and simulated in the Cadence environment using the 0.18 mu m CMOS technology from TSMC at a supply voltage of 0.5 V. The simulation results show that the filter consumes 16 nW of power at a bandwidth of 110 Hz, has a total harmonic distortion (THD) of 1 % at 204.96 mV input amplitude, and provides dynamic range of 69.24 dB. These results indicate that the proposed low-pass filter can be applied to bio-signal processing applications.

Keywords

Active filter; Dynamic threshold MOST transistor; Operational transconductance amplifier; Bio-signal processing

Authors

PHATSORNSIRI, P.; KUMNGERN, M.; KHATEB, F.; TORTEANCHAI, U.; WONGPROMMOON, N.; KULEJ, T.

Released

1. 1. 2025

Publisher

ELSEVIER GMBH

Location

MUNICH

ISBN

1434-8411

Periodical

AEU - International Journal of Electronics and Communications

Year of study

188

Number

January

State

Federal Republic of Germany

Pages from

1

Pages to

10

Pages count

10

URL

https://doi.org/10.1016/j.aeue.2024.155570

BibTex

@article{BUT193487,
  author="Punnavich {Phatsornsiri} and Montree {Kumngern} and Fabian {Khateb} and Usa {Torteanchai} and Natapong {Wongprommoon} and Tomasz {Kulej}",
  title="16-nW 0.5-V low-pass filter for bio-signal applications",
  journal="AEU - International Journal of Electronics and Communications",
  year="2025",
  volume="188",
  number="January",
  pages="1--10",
  doi="10.1016/j.aeue.2024.155570",
  issn="1434-8411",
  url="https://doi.org/10.1016/j.aeue.2024.155570"
}