Detail publikace

A 450 mV Tunable Low-Frequency OTA-C Third-Order Elliptic Low-Pass Filter for Bio-Signal Applications

KUMNGERN, M. KULEJ, T. KHATEB, F.

Originální název

A 450 mV Tunable Low-Frequency OTA-C Third-Order Elliptic Low-Pass Filter for Bio-Signal Applications

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

This paper introduces a tunable third-order elliptic low-pass OTA-C filter specifically designed for biological signal applications. The proposed filter leverages a multiple-input operational transconductance amplifier (MI-OTA) that operates at low voltage and low power consumption. This innovative approach simplifies the filter topology and significantly reduces the number of active and passive components required. By utilizing the multiple-input capability of the OTA, the voltage gains of the low-pass transfer function can be easily increased. The filter operates with a supply voltage of 450 mV and consumes only 40.5 nW of power while achieving a cutoff frequency of 112.9 Hz and a dynamic range (DR) of 66.7 dB at 1% total harmonic distortion (THD). The filter's performance was validated through the effective filtering of interfering ECG signals. The design and simulations were carried out using the Cadence environment and TSMC's 0.18 mu m CMOS technology. Monte Carlo (MC) analysis and process, voltage, and temperature (PVT) corner analysis were conducted to ensure the robustness of the design.

Klíčová slova

Active filter; operational transconductance amplifier; low-voltage low-power circuit; biomedical system

Autoři

KUMNGERN, M.; KULEJ, T.; KHATEB, F.

Vydáno

24. 2. 2025

Nakladatel

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Místo

PISCATAWAY

ISSN

2169-3536

Periodikum

IEEE Access

Ročník

13

Číslo

24 February 2025

Stát

Spojené státy americké

Strany od

36224

Strany do

36232

Strany počet

9

URL

https://ieeexplore.ieee.org/document/10900345

BibTex

@article{BUT197339,
  author="Montree {Kumngern} and Tomasz {Kulej} and Fabian {Khateb}",
  title="A 450 mV Tunable Low-Frequency OTA-C Third-Order Elliptic Low-Pass Filter for Bio-Signal Applications",
  journal="IEEE Access",
  year="2025",
  volume="13",
  number="24 February 2025",
  pages="36224--36232",
  doi="10.1109/ACCESS.2025.3544735",
  issn="2169-3536",
  url="https://ieeexplore.ieee.org/document/10900345"
}