一个曲率校正带隙参考与失配消除和降噪

2019 IEEE 13th International Conference on ASIC (ASICON) Pub Date : 2019-10-01 DOI:10.1109/ASICON47005.2019.8983510

Dehong Lv, Heng Ma, Fuqiang Liu, Zhiliang Hong

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引用次数: 0

摘要

提出了一种曲率校正带隙基准(BGR)，温度系数为1ppm/°C，温度范围为- 40°C至150°C。通过运放斩波将随机失配和1/f噪声移至高频。截断纹波是由一个小面积的开关电容陷波滤波器去除。它采用TSMC180 BCD工艺设计，电流消耗为42uA，芯片面积为0.06 mm2。

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A curvature corrected bandgap reference with mismatch cancelling and noise reduction

A curvature corrected bandgap reference (BGR) with 1ppm/°C temperature coefficient from −40°C to 150°C is presented. Random mismatch and 1/f noise are moved to high frequency by opamp chopping. Chopping ripple is removed by a switched capacitor notch filter which has a small area. It is designed in TSMC180 BCD process with 42uA current consumption and 0.06 mm2chip area.

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来源期刊

2019 IEEE 13th International Conference on ASIC (ASICON)

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