Publication detail

0.5-V 281-nW Versatile Mixed-Mode Filter Using Multiple-Input/Output Differential Difference Transconductance Amplifiers

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

Original Title

0.5-V 281-nW Versatile Mixed-Mode Filter Using Multiple-Input/Output Differential Difference Transconductance Amplifiers

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents a new low-voltage versatile mixed-mode filter which uses a multiple-input/output differential difference transconductance amplifier (MIMO-DDTA). The multiple-input of the DDTA is realized using a multiple-input bulk-driven MOS transistor (MI-BD-MOST) technique to maintain a single differential pair, thereby achieving simple structure with minimal power consumption. In a single topology, the proposed filter can provide five standard filtering functions (low-pass, high-pass, band-pass, band-stop, and all-pass) in four modes: voltage (VM), current (CM), transadmittance (TAM), and transimpedance (TIM). This provides the full capability of a mixed-mode filter (i.e., twenty filter functions). Moreover, the VM filter offers high-input and low-output impedances and the CM filter offers high-output impedance; therefore, no buffer circuit is needed. The natural frequency of all filtering functions can be electronically controlled by a setting current. The voltage supply is 0.5 V and for a 4 nA setting current, the power consumption of the filter was 281 nW. The filter is suitable for low-frequency biomedical and sensor applications that require extremely low supply voltages and nano-watt power consumption. For the VM low-pass filter, the dynamic range was 58.23 dB @ 1% total harmonic distortion. The proposed filter was designed and simulated in the Cadence Virtuoso System Design Platform using the 0.18 mu m TSMC CMOS technology.

Keywords

universal filter; mixed-mode filter; differential difference transconductance amplifier; operational transconductance amplifier

Authors

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

Released

30. 1. 2024

Publisher

MDPI

Location

BASEL

ISBN

1424-8220

Periodical

SENSORS

Year of study

24

Number

1

State

Swiss Confederation

Pages from

1

Pages to

18

Pages count

18

URL

https://doi.org/10.3390/s24010032

Full text in the Digital Library

http://hdl.handle.net/11012/244867

BibTex

@article{BUT187668,
  author="Fabian {Khateb} and Montree {Kumngern} and Tomasz {Kulej}",
  title="0.5-V 281-nW Versatile Mixed-Mode Filter Using Multiple-Input/Output Differential Difference Transconductance Amplifiers",
  journal="SENSORS",
  year="2024",
  volume="24",
  number="1",
  pages="1--18",
  doi="10.3390/s24010032",
  issn="1424-8220",
  url="https://doi.org/10.3390/s24010032"
}

Documents

Versatile Mixed-Mode Filter Using Multiple-Input Output Differential Difference Transconductance Amplifiers.pdf