NDLI: An Accurate Bandgap Voltage Reference Ready-Indicator

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An Accurate Bandgap Voltage Reference Ready-Indicator

Content Provider	MDPI
Author	Malatesta, Rafailia Souliotis, George Plessas, Fotis Vlassis, Spyridon
Copyright Year	2022
Description	An accurate indication that the bandgap voltage reference (BGR) circuit is settled on its nominal value is essential in analog or mixed signal systems. In this paper, a generic method for accurate bandgap voltage reference (BGR) Ready-Indication (RI) is proposed. A RI signal shows that the BGR operates correctly but also is used to enable PoR circuits when those employ the bandgap voltage to generate the required thresholds. In many low power applications, several systems are periodically switched on and off to save power and to increase battery life. In such systems, most circuits must remain off, while BGR is not in ready mode, saving battery energy. In other critical applications, the Ready-Indicator can ensure that critical systems can be set on and the reference voltage is within the operating range. In this paper, the introduced methodology is applied to different reference voltage generators. Initially, a BGR with Ready-Indication is presented extensively, including post-layout simulations results in 22 nm, while thereafter, the study of this method is extended in other BGR topologies. The universality of the proposed method is proved by verifying the operation in all the BGR topologies under study covering designs in 22 nm and 65 nm and with supply voltages 1.8 V, 1 V, 0.55 V.
Starting Page	723
e-ISSN	20799292
DOI	10.3390/electronics11050723
Journal	Electronics
Issue Number	5
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2022-02-26
Access Restriction	Open
Subject Keyword	Electronics Industrial Engineering Bandgap Voltage Reference Bandgap Voltage Reference Ready Indicator Power-on-reset
Content Type	Text
Resource Type	Article

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