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AKBARI, M. MAWLOOD HUSSEIN S. HASHIM Y. KHATEB, F. KEA-TIONG, T.
Original Title
A Rail-to-Rail Transconductance Amplifier Based on Current Generator Circuits
Type
journal article in Web of Science
Language
English
Original Abstract
In this brief, two current generator circuits are used to design a self-biasing transconductance amplifier. The current generators are configured using two n-channel and p-channel cascode current mirrors by which a high input dynamic range is achieved. Since such a topology creates positive feedback, the transconductance of the circuit is also increased causing higher performance. To ensure the stability of the circuit, constant current sources can be paralleled with the current mirror topologies, which of course are implemented using input drivers. Therefore, two n-channel and p-channel input differential pairs are added to the current generator circuits by which not only a rail-to-rail operation is achieved but also the amplifier is stabilized. The proposed circuit was fabricated in the TSMC 0.18-mu m CMOS process with a silicon area of 54.1 x 71 mu m. Under a 1.8-V supply voltage, the experimental results showed a high input common-mode range (ICMR), while a gain bandwidth (GBW) of 83.9 MHz was measured for a capacitive load of 2 x 6 pF. In addition, a dc gain and a slew rate (SR) of 68.4 dB and 71.7 V/mu s, respectively, were achieved.
Keywords
Transconductance; Topology; Current mirrors; Transconductors; Generators; Transistors; Rail to rail amplifiers; Amplifier; current generator; current mirror; operational transconductance amplifier (OTA); rail-to-rail; self-biasing
Authors
AKBARI, M.; MAWLOOD HUSSEIN S.; HASHIM Y.; KHATEB, F.; KEA-TIONG, T.
Released
26. 7. 2023
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Location
PISCATAWAY
ISBN
1557-9999
Periodical
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
Year of study
31
Number
10
State
United States of America
Pages from
1624
Pages to
1628
Pages count
5
URL
https://doi.org/10.1109/TVLSI.2023.3285823
BibTex
@article{BUT184976, author="AKBARI, M. and MAWLOOD HUSSEIN S. and HASHIM Y. and KHATEB, F. and KEA-TIONG, T.", title="A Rail-to-Rail Transconductance Amplifier Based on Current Generator Circuits", journal="IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS", year="2023", volume="31", number="10", pages="1624--1628", doi="10.1109/TVLSI.2023.3285823", issn="1557-9999", url="https://doi.org/10.1109/TVLSI.2023.3285823" }