Designing low-power Bandgap reference voltage supply using the CMOS 28nm technology
Abstract
The Bandgap reference block is a fundamental component, which plays an essential role in many analog and digital circuit designs. The most important feature of the reference block is to generate a constant-value voltage or a direct current which is least dependent on the variation of the circuit caused by noises, changes in voltage supply and temperature variation under different operating conditions of the circuit. This article proposes a low-power Bandgap reference structure, implemented through the 28nm CMOS technology, which operates stably in a supply voltage range from 1.1 to 2V with an PSRR of 54dB. This circuit generates an output reference voltage value of 0.6 V and achieves a temperature coefficient below 10ppm/°C in the operating temperature range from -40°C to 105°C. Under the 1.2V supply voltage, the circuit consumes only 2.87µA, yielding a consumption power of 3.46µW.
Moraref