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发明公开
CN103941796A 带隙基准电路 有权

带隙基准电路
摘要：
一种带隙基准电路，包括带隙核心单元和输出单元。所述带隙核心单元包括第一PNP三极管、第二PNP三极管、第三PNP三极管、第四PNP三极管、第一PMOS管、第二PMOS管、运算放大器以及偏置电阻；所述输出单元包括第五PNP三极管和第三PMOS管，所述第三PNP三极管、第四PNP三极管以及第五PNP三极管的电流增益相等。本发明技术方案提供的带隙基准电路消除了三极管的电流增益对其输出的基准电压的影响，提高了所述基准电压的稳定性。
摘要（英）：

A band gap reference circuit comprises a band gap core unit and an output unit. The band gap core unit comprises a first PNP triode, a second PNP triode, a third PNP triode, a fourth PNP triode, a first PMOS tube, a second PMOS tube, an operational amplifier and a biasing resistor. The output unit comprises a fifth PNP triode and a third PMOS tube, and the current gains of the third PNP triode, the fourth PNP triode and the fifth PNP triode are equal. According to the technical scheme, the band gap reference circuit eliminates influences of the current gains of the triodes on reference voltages output by the triodes, and stability of the reference voltages is improved.

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