Publication detail

0.5 V Multiple-Input Fully Differential Operational Transconductance Amplifier and Its Application to a Fifth-Order Chebyshev Low-Pass Filter for Bio-Signal Processing

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

Original Title

0.5 V Multiple-Input Fully Differential Operational Transconductance Amplifier and Its Application to a Fifth-Order Chebyshev Low-Pass Filter for Bio-Signal Processing

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents a multiple-input fully differential operational transconductance amplifier (MI-FD OTA) with very low power consumption. To obtain a differential MOS pair with minimum supply voltage and minimum power consumption, the multiple-input bulk-driven MOS transistor operating in the subthreshold region is used. To show the advantage of the MI-FD OTA, a fifth-order Chebyshev filter was used to realize a low-pass filter capable of operating with a supply voltage of 0.5 V and consuming 60 nW at a nominal setup current of 3 nA. The proposed filter uses five MI-FD OTAs and five capacitors. The total harmonic distortion (THD) was 0.97% for a rail-to-rail sinusoidal input signal. The MI-FD OTA and the filter application were designed and simulated in the Cadence environment using a 0.18 mu m CMOS process from TSMC. The robustness of the design was confirmed by Monte Carlo analysis and process, voltage, and temperature corner analysis.

Keywords

bulk-driven; multiple input MOS transistor; low-pass filter; low-voltage low-power CMOS

Authors

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

Released

1. 4. 2024

Publisher

MDPI

Location

BASEL

ISBN

1424-8220

Periodical

SENSORS

Year of study

24

Number

7

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

https://doi.org/10.3390/s24072150

Full text in the Digital Library

http://hdl.handle.net/11012/245301

BibTex

@article{BUT188453,
  author="Tomasz {Kulej} and Fabian {Khateb} and Montree {Kumngern}",
  title="0.5 V Multiple-Input Fully Differential Operational Transconductance Amplifier and Its Application to a Fifth-Order Chebyshev Low-Pass Filter for Bio-Signal Processing",
  journal="SENSORS",
  year="2024",
  volume="24",
  number="7",
  pages="1--12",
  doi="10.3390/s24072150",
  issn="1424-8220",
  url="https://doi.org/10.3390/s24072150"
}