Publication detail

0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs

JAIKLA, W. KHATEB, F. KUMNGERN, M. KULEJ, T. KUMAR RANJAN, R. SUWANJAN, P.

Original Title

0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs

Type

journal article in Web of Science

Language

English

Original Abstract

The design of a low-power, low-voltage, fully-differential universal biquad filter is presented in this work, which is constructed from four multiple-input gate-driven operational transconductance amplifiers (MI-OTAs) along with one passive resistor and two passive capacitors. The scheme of presented biquad filter has three high-input impedance voltage nodes and single output voltage node. Five unity gain filtering functions, all-pass (AP), low-pass (LP), band-pass (BP), high-pass (HP) and band-stop (BS) responses, are obtained. The selection of output filtering responses is obtained without the need of component matching condition, inverting or double input voltage. With this feature, it can be easily controlled with digital programming. The quality factor (Q) and angular frequency (omega(0)) are electronically and independently tuned. Moreover, the adjustment of omega(0) and Q can be done without affecting the voltage gain. A workability of the design is confirmed via Cadence software and the Spectre simulator based on the 180 nm TSMC CMOS technology parameters. The proposed fully differential filter operates with 0.5 V supply voltage. The results verify that the proposed filter dissipates the total power of 53.3 nW. Additionally, the dynamic range (DR) of band-pass filtering function is 63 dB for 2% third intermodulation distortion (IMD). Also, the simulated RMS value of the band-pass filtering noise is 45 mu V.

Keywords

MI-OTA; low-power low-voltage circuit; universal filter; analog circuit; electronic control

Authors

JAIKLA, W.; KHATEB, F.; KUMNGERN, M.; KULEJ, T.; KUMAR RANJAN, R.; SUWANJAN, P.

Released

17. 11. 2020

Publisher

IEEE

Location

PISCATAWAY

ISBN

2169-3536

Periodical

IEEE Access

Year of study

8

Number

1

State

United States of America

Pages from

187832

Pages to

187839

Pages count

8

URL

https://doi.org/10.1109/ACCESS.2020.3030239

Full text in the Digital Library

http://hdl.handle.net/11012/195657

BibTex

@article{BUT166040,
  author="Winai {Jaikla} and Fabian {Khateb} and Montree {Kumngern} and Tomasz {Kulej} and Rajeev {Kumar Ranjan} and Peerawut {Suwanjan}",
  title="0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs",
  journal="IEEE Access",
  year="2020",
  volume="8",
  number="1",
  pages="187832--187839",
  doi="10.1109/ACCESS.2020.3030239",
  issn="2169-3536",
  url="https://doi.org/10.1109/ACCESS.2020.3030239"
}

Documents

0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs.pdf