A body‐driven rail‐to‐rail 0.3 V operational transconductance amplifier exploiting current gain stages

Summary This paper presents a novel topology of ultra‐low voltage (ULV) operational transconductance amplifier (OTA), which exploits several design techniques to achieve high efficiency, symmetrical slew rate, good linearity, and robustness in spite of ultra‐low voltage operation. Simulations in a c...

Full description

Saved in:
Bibliographic Details
Published in:International journal of circuit theory and applications 2023-05, Vol.51 (5), p.1971-1987
Main Authors: Della Sala, Riccardo, Centurelli, Francesco, Monsurrò, Pietro, Scotti, Giuseppe, Trifiletti, Alessandro
Format: Article
Language:English
Subjects:
Amplification
analog CMOS design
body‐driven
Low voltage
Operational amplifiers
operational transconductance amplifier
Power consumption
Slew rate
Topology
Transconductance
ultra‐low power
ultra‐low voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Summary This paper presents a novel topology of ultra‐low voltage (ULV) operational transconductance amplifier (OTA), which exploits several design techniques to achieve high efficiency, symmetrical slew rate, good linearity, and robustness in spite of ultra‐low voltage operation. Simulations in a commercial 130‐nm CMOS technology with 0.3‐V supply voltage show the best reported small‐signal figure‐of‐merit among 0.3‐V OTAs, with a dc gain of 56.2 dB, a unity‐gain frequency of 26.2 kHz over a 150‐pF load capacitor, and a power consumption of 139.5 nW. A symmetrical slew rate of about 3.2 V/ms is achieved, and results are consistent under process, supply voltage and temperature variations, and device mismatches. This paper presents a novel topology of ultra‐low voltage (ULV) operational transconductance amplifier (OTA), which exploits several design techniques to achieve high efficiency, symmetrical slew rate, good linearity, and robustness in spite of ultra‐low voltage operation, attaining best reported small‐signal figure‐of‐merit among 0.3‐V OTAs, with a dc gain of 56.2 dB, a unity‐gain frequency of 26.2 kHz over a 150‐pF load capacitor, and a power consumption of 139.5 nW.
ISSN:0098-9886
1097-007X
DOI:10.1002/cta.3520