Operational amplifier
专利汇可以提供Operational amplifier专利检索，专利查询，专利分析的服务。并且PURPOSE: To operate stably a titled amplifier by reducing a phase delay in a high frequency area even if a phase compensating circuit is not provided additionally, by providing an input to source terminals of p and n channel type outputting MOS transistors, respectively, and connecting both its drain terminals to the output terminal.
CONSTITUTION: The input part executes an operation for converting the voltage to a current, is constituted so that only the output stage obtains the voltage gain, and also the output stage consists of a complementary cascode amplifying circuit, therefore, input capacity of a transistor 29 and 32 is small, voltage of a connecting point (a) and a' can be varied at a high speed, and also since impedance of the connecting point (a) and a' is low, a phase delay of a signal generated by a current conversion of the input part is extremely small. The output stage generates a phase delay in a high frequency area, but the amplifying stage is one stage and its phase delay is 90 degrees at the most, therefore, it is possible to execute the feedback stably without adding any phase compensating circuit. Also, the offset voltage combines the input part and the output stage and realizes a function of a differential amplifying circuit.
COPYRIGHT: (C)1983,JPO&Japio，下面是Operational amplifier专利的具体信息内容。
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