Detail publikačního výsledku

A 328 nW, 0.45 V Current Differencing Transconductance Amplifier and Its Application in a Current-Mode Universal Filter

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

Originální název

A 328 nW, 0.45 V Current Differencing Transconductance Amplifier and Its Application in a Current-Mode Universal Filter

Anglický název

A 328 nW, 0.45 V Current Differencing Transconductance Amplifier and Its Application in a Current-Mode Universal Filter

Druh

Článek WoS

Originální abstrakt

This paper presents a low-voltage, low-power current differencing transconductance amplifier (CDTA) utilizing the bulk-driven MOS transistor technique in the subthreshold region for reduced voltage and power consumption. The proposed CDTA includes a z-copy terminal, which enhances its functionality in current-mode circuit applications. Designed in the Cadence Virtuoso environment using 0.18 mu m CMOS technology from Taiwan Semiconductor Manufacturing Company (TSMC), the amplifier operates with a supply voltage of 0.45 V and consumes 328 nW of power, with a bias current set to 10 nA. The current bandwidth and offset of the CDTA are 35 kHz and 0.3 nA, respectively. To demonstrate its performance, the CDTA is applied in a current-mode universal filter, which can realize low-pass, band-pass, high-pass, band-stop, and all-pass responses within a single topology. This design eliminates issues related to inverting input signals, input signal matching, or the need for multiple input signals. Additionally, the natural frequency of these filtering functions can be electronically controlled. The low-pass filter achieves a dynamic range of 61 dB, with a total harmonic distortion of 0.8%.

Anglický abstrakt

This paper presents a low-voltage, low-power current differencing transconductance amplifier (CDTA) utilizing the bulk-driven MOS transistor technique in the subthreshold region for reduced voltage and power consumption. The proposed CDTA includes a z-copy terminal, which enhances its functionality in current-mode circuit applications. Designed in the Cadence Virtuoso environment using 0.18 mu m CMOS technology from Taiwan Semiconductor Manufacturing Company (TSMC), the amplifier operates with a supply voltage of 0.45 V and consumes 328 nW of power, with a bias current set to 10 nA. The current bandwidth and offset of the CDTA are 35 kHz and 0.3 nA, respectively. To demonstrate its performance, the CDTA is applied in a current-mode universal filter, which can realize low-pass, band-pass, high-pass, band-stop, and all-pass responses within a single topology. This design eliminates issues related to inverting input signals, input signal matching, or the need for multiple input signals. Additionally, the natural frequency of these filtering functions can be electronically controlled. The low-pass filter achieves a dynamic range of 61 dB, with a total harmonic distortion of 0.8%.

Klíčová slova

current differencing transconductance amplifier; current-mode circuit; active filter; bulk-driven MOS transistor

Klíčová slova v angličtině

current differencing transconductance amplifier; current-mode circuit; active filter; bulk-driven MOS transistor

Autoři

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

Vydáno

21.03.2025

Nakladatel

MDPI

Místo

BASEL

ISSN

2076-3417

Periodikum

Applied Sciences-Basel

Svazek

15

Číslo

7

Stát

Švýcarská konfederace

Strany od

1

Strany do

15

Strany počet

15

URL

https://doi.org/10.3390/app15073471

BibTex

@article{BUT197757,
  author="Fabian {Khateb} and Montree {Kumngern} and Tomasz {Kulej} and Jiří {Vávra}",
  title="A 328 nW, 0.45 V Current Differencing Transconductance Amplifier and Its Application in a Current-Mode Universal Filter",
  journal="Applied Sciences-Basel",
  year="2025",
  volume="15",
  number="7",
  pages="1--15",
  doi="10.3390/app15073471",
  url="https://doi.org/10.3390/app15073471"
}