Design of precise and low-power bandgap voltage reference
Xu Yong, Pla Uni · Journal of PLA University of Science and Technology · 2006
Design of BVR(bandgap voltage reference) used in the integrated circuit was described.As an IP core(intellectual property core) in monolithic circuit,the voltage of 1.22 V independent of temperature and power supply was obtained.To get zero-temperature coefficient reference voltage,a positive temperature coefficient and a negative-temperature coefficient device worked together and the zero-temperature coefficient was achieved,though semiconductor was temperature independent.The desig indicates that BVR's temperature coefficient is only 7 ppm/°C in the temperature range of-40～125 °C,and power supply rejection ratio(PSRR) is-75 dB.The power dissipation is 133 μA in supply of 5 V and die area is 285 μm×285 μm.It was fabricated in 0.6 μm standard CMOS process.