Please use this identifier to cite or link to this item:
Title: Self-biased and supply-voltage scalable inverter-based operational transconductance amplifier with improved composite transistors
Authors: Rodovalho, Luis Henrique
Ramos Rodrigues, Cesar
Aiello, Orazio 
Keywords: Composite transistors
Improved forward-body-bias
Inverter-based OTA
Operational Transconductance Amplifier (OTA)
Push-pull based OTA
Supply-voltage scalable
Ultra-Low-Power (ULP)
Ultra-Low-Voltage (ULV)
Issue Date: 14-Apr-2021
Publisher: MDPI AG
Citation: Rodovalho, Luis Henrique, Ramos Rodrigues, Cesar, Aiello, Orazio (2021-04-14). Self-biased and supply-voltage scalable inverter-based operational transconductance amplifier with improved composite transistors. Electronics (Switzerland) 10 (8) : 935. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: This paper deals with a single-stage single-ended inverter-based Operational Transconduc-tance Amplifiers (OTA) with improved composite transistors for ultra-low-voltage supplies, while maintaining a small-area, high power-efficiency and low output signal distortion. The improved composite transistor is a combination of the conventional composite transistor and forward-body-biasing to further increase voltage gain. The impact of the proposed technique on performance is demonstrated through post-layout simulations referring to the TSMC 180 nm technology process. The proposed OTA achieves 54 dB differential voltage gain, 210 Hz gain–bandwidth product for a 10 pF capacitive load, with a power consumption of 273 pW with a 0.3 V power supply, and occupies an area of 1026 µm². For a 0.6 V voltage supply, the proposed OTA improves its voltage gain to 73 dB, and achieves a 15 kHz gain–bandwidth product with a power consumption of 41 nW. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Electronics (Switzerland)
ISSN: 2079-9292
DOI: 10.3390/electronics10080935
Rights: Attribution 4.0 International
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_3390_electronics10080935.pdf1.6 MBAdobe PDF



Google ScholarTM



This item is licensed under a Creative Commons License Creative Commons