A Sub-nW Temperature Invariant Voltage Reference in a Unipolar TFT-based Flexible IC Technology
No Thumbnail Available
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A4 Artikkeli konferenssijulkaisussa
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Authors
Date
2024
Major/Subject
Mcode
Degree programme
Language
en
Pages
Series
Abstract
Voltage reference circuits are crucial for any mixed-signal circuits, providing PVT (Process, Voltage, Temperature) robust output for the system's stability and accuracy. This paper presents a novel voltage reference circuit implemented in an indium gallium zinc oxide (IGZO) based thin film transistors (TFT) technology, proposing for the first time a sub-nanowatt, area-efficient circuit realized with only a single N-type TFT in a 600 nm technology. The design occupies a minimal area of 27x37 μm2, operates across a broad supply voltage range from 0.5 V to 3 V, and maintains functionality from 0 °C to 100 °C. The circuit has an ultra-low power consumption between 0.75 nW to 1.2 nW while achieving an output voltage of 454 mV with a temperature coefficient (TC) as low as 28.9 ppm/°C. The simulated results, which include process variation, temperature dependence, line sensitivity and power supply rejection ratio measurements, underline the circuit's potential for high-efficiency, low-power applications in next-generation flexible electronics.Description
Publisher Copyright: © 2024 IEEE.
Keywords
flexible integrated circuits, IGZO, TFT, thermal compensation, ultra-low power, Voltage reference
Other note
Citation
Monga, D C & Halonen, K 2024, A Sub-nW Temperature Invariant Voltage Reference in a Unipolar TFT-based Flexible IC Technology . in FLEPS 2024 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings . IEEE International Conference on Flexible and Printable Sensors and Systems, IEEE, IEEE International Conference on Flexible and Printable Sensors and Systems, Tampere, Finland, 30/06/2024 . https://doi.org/10.1109/FLEPS61194.2024.10603932