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Vol. 161, Issue 12, December 2013, pp. 155-161




A High Precision, High PSRR CMOS Bandgap Based on Negative Feedback

Department of Electrical Engineering, Xiamen University, Xiamen, Fujian of China
E-mail: lin_ch@qq.com, leexcjeffrey@xmu.edu.cn


Received: 11 September 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems


Abstract: An innovative low temperature coefficient and high power supply rejection bandgap reference (BGR) using double negative feedback and non-linear compensate is described. The circuit uses a negative feedback bandgap core to optimize the temperature coefficient, power supply rejection and line regulation. Simulation results of the proposed BGR implemented in 0.35-mm CMOS processing demonstrate that a temperature coefficient of 8.10 ppm/ C is realized at 3.3 V power supply, a power supply ripple rejection radio of -102.7 dB @DC is achieved, and the line regulation is 7.78 V/V.


Keywords: Bandgap reference, Negative feedback, Temperature compensation.


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