①(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
②(University of the Chinese Academy of Sciences, Beijing 100049, China)
This paper presents a non-bandgap voltage reference, which contains a pre-regulated circuit with a super source follower. The pre-regulated circuit includes a super source follower, which attenuates the impedance from the supply of the core reference circuit to ground. In this way, the pre-regulated circuit provides a relative stable voltage for the core reference circuit, improving the Power Supply Rejection Ratio (PSRR) of the output voltage of the reference. The proposed reference circuit is implemented in standard 0.35 μm CMOS process. Measured results show that the supply range is from 1.8 to 5 V and the quiescent current is only about 13 μA at room temperature. The PSRR at low frequency achieves -100 dB and the PSRR below 1 kHz is better than -93 dB. The active area of the proposed reference is only 0.013 mm2.
黄国城,尹韬,朱渊明,许晓冬,张亚朝,杨海钢. 一种-100 dB电源抑制比的非带隙基准电压源[J]. 电子与信息学报, 2016, 38(8): 2122-2128.
HUANG Guocheng, YIN Tao, ZHU Yuanming, XU Xiaodong, ZHANG Yachao, YANG Haigang. A -100 dB Power Supply Rejection Ratio Non-bandgap Voltage Reference. JEIT, 2016, 38(8): 2122-2128.
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