Publication detail

0.3-Volt Rail-to-Rail DDTA and Its Application in a Universal Filter and Quadrature Oscillator

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

Original Title

0.3-Volt Rail-to-Rail DDTA and Its Application in a Universal Filter and Quadrature Oscillator

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents the extremely low-voltage supply of the CMOS structure of a differential difference transconductance amplifier (DDTA). With a 0.3-volt supply voltage, the circuit offers rail-to-rail operational capability. The circuit is designed for low-frequency biomedical and sensor applications, and it consumes 357.4 nW of power. Based on two DDTAs and two grounded capacitors, a voltage-mode universal filter and quadrature oscillator are presented as applications. The universal filter possesses high-input impedance and electronic tuning ability of the natural frequency in the range of tens up to hundreds of Hz. The total harmonic distortion (THD) for the band-pass filter was 0.5% for 100 mV(pp) @ 84.47 Hz input voltage. The slight modification of the filter yields a quadrature oscillator. The condition and the frequency of oscillation are orthogonally controllable. The frequency of oscillation can also be controlled electronically. The THD for a 67 Hz oscillation frequency was around 1.2%. The circuit is designed and simulated in a Cadence environment using 130 nm CMOS technology from United Microelectronics Corporation (UMC). The simulation results confirm the performance of the designed circuits.

Keywords

universal filter; quadrature oscillator; differential difference transconductance amplifier; analog signal processing

Authors

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

Released

21. 4. 2022

Publisher

MDPI

Location

BASEL

ISBN

1424-8220

Periodical

SENSORS

Year of study

22

Number

7

State

Swiss Confederation

Pages from

1

Pages to

17

Pages count

17

URL

https://www.mdpi.com/1424-8220/22/7/2655

Full text in the Digital Library

http://hdl.handle.net/11012/204105

BibTex

@article{BUT177593,
  author="Fabian {Khateb} and Montree {Kumngern} and Tomasz {Kulej} and Dalibor {Biolek}",
  title="0.3-Volt Rail-to-Rail DDTA and Its Application in a Universal Filter and Quadrature Oscillator",
  journal="SENSORS",
  year="2022",
  volume="22",
  number="7",
  pages="1--17",
  doi="10.3390/s22072655",
  issn="1424-8220",
  url="https://www.mdpi.com/1424-8220/22/7/2655"
}