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发明授权
CN107390771B 同时产生多种温度特性参考电流的带隙基准参考源电路 有权 转让

同时产生多种温度特性参考电流的带隙基准参考源电路
摘要：
本发明公开了一种同时产生多种温度特性参考电流的带隙基准参考源电路，包括：零温度系数电压、正温度系数电流输出电路、负温度系数电流输出电路、零温度系数电流输出电路以及运算放大器。其中，零温度系数电压、正温度系数电流输出电路包括：第一电阻、第二电阻、第一双极型晶体管、第二双极型晶体管、第三双极型晶体管、第一P沟道场效应管、第二P沟道场效应管、第三P沟道场效应管、第一N沟道场效应管和第二N沟道场效应管；负温度系数电流输出电路包括第一电流镜、第三电阻和第三N沟道场效应管；零温度系数电流输出电路包括第二电流镜。本发明的带隙基准参考源电路结构简单、成本低、能够同时输出多种温度特性的电流。
摘要（英）：

The invention discloses a band-gap reference source circuit capable of simultaneously generating various temperature characteristic reference currents. The band-gap reference source circuit comprises a zero temperature coefficient voltage and positive temperature coefficient current output circuit, a negative temperature coefficient current output circuit, a zero temperature coefficient current output circuit, and an operational amplifier, wherein the zero temperature coefficient voltage and positive temperature coefficient current output circuit comprises a first resistor, a second resistor, a first bipolar transistor, a second bipolar transistor, a third bipolar transistor, a first P-channel field-effect transistor, a second P-channel field-effect transistor, a third P-channel field-effect transistor, a first N-channel field-effect transistor, and a second N-channel field-effect transistor. The negative temperature coefficient current output circuit comprises a first current mirror, a third resistor and a third N-channel field-effect transistor. The zero temperature coefficient current output circuit comprises a second current mirror. The band-gap reference source circuit is simple in structure and low in cost and can simultaneously output currents of various temperature characteristics.

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