Open AccessLow‐complexity 0.55‐V 2.5‐μW bandgap reference and power‐on reset hybrid circuit
Author(s) -
Zhou Bo,
Liu Shuli,
Chiang Patrick
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2637
Subject(s) - bandgap voltage reference , voltage reference , input offset voltage , power supply rejection ratio , amplifier , cmos , electrical engineering , reset (finance) , voltage , offset (computer science) , low voltage , electronic engineering , computer science , operational amplifier , engineering , dropout voltage , programming language , financial economics , economics
A near‐threshold low‐complexity bandgap reference (BGR) and power‐on reset (POR) hybrid circuit is implemented in 65 nm CMOS, with an ultra‐low supply voltage of 0.55 V and power consumption of 2.5 μW. The BGR employing amplifier offset voltage and current matching, and the POR based on offset voltage matching and loop settling feature, are proposed. The circuit‐level simulation results verify that the presented implementation, not only generates a stable reference voltage with the typical temperature coefficient of 120 ppm/°C and line‐regulation feature of 3.3%/V, but provides a robust reset signal with power‐on and brown‐out detection function. The proposed near‐threshold circuit has ultra‐low power supply and design complexity, both for BGR and POR modules, when compared to the reported.