A 1.67-ppm/°C 64-ppm/V curvature-compensated bandgap reference based on a transcendental equation

作者：Wang Ruocheng; Lu Wengao; Zhu Yajun; Niu Yuze; Zhang Yacong; Chen Zhongjian

来源：13th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2016, 2016-10-25 to 2016-10-28.

DOI：10.1109/ICSICT.2016.7998734

• Bandgap Reference
• Base-emitter voltage
• Curvature compensated
• Curvature compensation
• Low operating current
• Low temperature coefficients
• Process-insensitive
• Transcendental equations

This paper proposes a current-mode bandgap reference which employs a novel coarse voltage replication to offset the 2nd-order curvature due to base-emitter voltage of the BJT. The coarse replication is based on a process insensitive transcendental equation which regulates the independent CTAT current. The bandgap reference which will be implemented in 0.35μm CMOS process has a low operating current of 0.85μA. Under a 2.6V to 4V supply, its line sensitivity is 64ppm/V even in the worst condition, and its TC is only 1.67ppm/°C in the temperature range of-55°C to 115°C.

• 出版日期2016
• 单位北京大学