A Low-Voltage Low-Temperature-Coefficient CMOS Bandgap Voltage Reference Generator
Date Issued
2006
Date
2006
Author(s)
Lee, Chia-Yu
DOI
zh-TW
Abstract
Voltage references play an important role in modern integrated circuits systems. They are widely apdopted in many integrated circuits, such as A/D or D/A converters, power-management system, operational amplifiers, and linear regulators. They are used for defining input/output voltage range, baising current source of differential pairs, and providing a comparison reference for comparators. A precision voltage reference must be, inherently, well-defined and insensitive to temperature, power supply and load variations.
The objective of this thesis is to design a bandgap voltage reference with input voltage 1.8V to 3.3V and output voltage around 1.2V. The bandgap voltage reference is intended for using in low dropout linear regulators (LDO). In order to reduce the supply voltage, the voltage reference is using low voltage operational amplifers in place of using conservative cascade current mirror. In addition, this thesis designs a 1-V bandgap voltage reference with temperature compensation to suit the current of low supply voltage.
During design and analysis stages, the HSPICE is used for the simulation, modification and verification of the circuit.
Subjects
能階差
bandgap
Type
thesis
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