A 0.5V Voltage Reference Using Simple Common-Source Amplifier With Improved Gain

This paper presents a voltage reference circuit to greatly save the energy through four new techniques. (1) It uses a simple common-source amplifier to replace the complicated gain-boosted amplifier. Through using an additional capacitor, this simple common-source amplifier achieves an effective gai...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs p. 1
Main Authors Zhuang, Haoyu, Li, Qiang
Format Journal Article
LanguageEnglish
Published IEEE 05.06.2024
Subjects
Capacitors
Circuits
Energy Saving
Gain-Boosting
Generators
MOSFET
Power demand
Transistors
Voltage
Voltage Reference
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Summary:This paper presents a voltage reference circuit to greatly save the energy through four new techniques. (1) It uses a simple common-source amplifier to replace the complicated gain-boosted amplifier. Through using an additional capacitor, this simple common-source amplifier achieves an effective gain which is even higher than a gain-boosted amplifier. (2) It obviates the need for a differential amplifier, since it uses a special negative feedback structure. (3) The extra biasing circuit is no longer needed for the summing amplifier, which helps simplify the circuit structure. (4) MOSFETs in the sub-threshold region are used, which leads to a lower supply voltage. In a 180nm CMOS process, it achieves a 15nW power consumption, a 500mV minimum supply voltage, a 26.2ppm/°C average temperature coefficient (TC), and a 330μV/V line sensitivity. It realizes a 16 times reduction in the power consumption, when compared with the prior work that is based on a gain boosted amplifier.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2024.3410705