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专利号:200710018427.4专利权人:中国航天时代电子公司第七七一研究所简介:本发明公开了一种运算放大电路的相位反转和过流抑制电路。其特点是:仅由2只与输入级差动对管类型相同的双极晶体管和1只二极管构成;第1只晶体管的基极与运放的正向输入端相连,集电极与差动输入级的正向输出端相连;第2只晶体管的基极与运放的反向输入端相连,集电极与差动输入级的反向输出端相连;这2只晶体管的发射极与二极管的阳极相连,二极管的阴极与折叠共射共基结构的共基晶体管的基极连接。
Patent No .: 200710018427.4 Patentee: China Aerospace Times Electronics Company Seventh Research Institute Description: The present invention discloses an operational amplifier phase inversion and over-current suppression circuit. Its characteristics are: only by the input-type differential on the same type of bipolar transistor and a diode; the first transistor base and the op amp’s positive input connected to the collector and differential input The positive output of the stage is connected; the base of the second transistor is connected to the inverting input of the op amp, the collector is connected to the inverting output of the differential input stage; the emitter of the two transistors is connected to the anode of the diode , The cathode of the diode is connected to the base of a common-base transistor of the folded cascode structure.