Publication result detail

A Compact 0.3-V Class AB Bulk-Driven OTA

KULEJ, T.; KHATEB, F.

Original Title

A Compact 0.3-V Class AB Bulk-Driven OTA

English Title

A Compact 0.3-V Class AB Bulk-Driven OTA

Type

WoS Article

Original Abstract

In this work, a new solution for an ultra-low-voltage, (ULV) ultra-low-power (ULP) operational transconductance amplifier (OTA) is presented. Thanks to the combination of a low-voltage bulk-driven non-tailed differential stage with the multipath Miller zero compensation technique, a simple class AB power-efficient ULV structure has been obtained, which can operate from supply voltages less than the threshold voltages of the employed MOS transistors, while offering rail-to-rail input common-mode range at the same time. The proposed OTA was fabricated using the 180 nm CMOS process from TSMC and can operate from VDD ranging from 0.3 to 0.5 V. The 0.3-V version dissipates only 12.6 nW of power, while showing a 64.7 dB voltage gain at 1 Hz, 2.96 kHz gain-bandwidth product and a 4.15 V/ms average slew-rate at 30 pF load capacitance. The measured results agree well with simulations.

English abstract

In this work, a new solution for an ultra-low-voltage, (ULV) ultra-low-power (ULP) operational transconductance amplifier (OTA) is presented. Thanks to the combination of a low-voltage bulk-driven non-tailed differential stage with the multipath Miller zero compensation technique, a simple class AB power-efficient ULV structure has been obtained, which can operate from supply voltages less than the threshold voltages of the employed MOS transistors, while offering rail-to-rail input common-mode range at the same time. The proposed OTA was fabricated using the 180 nm CMOS process from TSMC and can operate from VDD ranging from 0.3 to 0.5 V. The 0.3-V version dissipates only 12.6 nW of power, while showing a 64.7 dB voltage gain at 1 Hz, 2.96 kHz gain-bandwidth product and a 4.15 V/ms average slew-rate at 30 pF load capacitance. The measured results agree well with simulations.

Keywords

Bulk-driven, Operational Transconductance Amplifier, Operational Amplifier, Low voltage, Low power.

Key words in English

Bulk-driven, Operational Transconductance Amplifier, Operational Amplifier, Low voltage, Low power.

Authors

KULEJ, T.; KHATEB, F.

RIV year

2021

Released

15.02.2020

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Location

USA

ISBN

1063-8210

Periodical

IEEE Transactions on Very Large Scale Integration (VLSI) Systems

Volume

28

Number

1, IF: 2.037

State

United States of America

Pages from

224

Pages to

232

Pages count

9

URL

https://doi.org/10.1109/TVLSI.2019.2937206

BibTex

@article{BUT158005,
  author="Tomasz {Kulej} and Fabian {Khateb}",
  title="A Compact 0.3-V Class AB Bulk-Driven OTA",
  journal="IEEE Transactions on Very Large Scale Integration (VLSI) Systems",
  year="2020",
  volume="28",
  number="1,  IF: 2.037",
  pages="224--232",
  doi="10.1109/TVLSI.2019.2937206",
  issn="1063-8210",
  url="https://doi.org/10.1109/TVLSI.2019.2937206"
}