Integrated circuit
专利汇可以提供Integrated circuit专利检索，专利查询，专利分析的服务。并且PURPOSE:To ensure an effective application of the integrated circuit to the hearing aid, the microminiature radio and others by forming the feedback elements of the voltage and output amplifying steps with the resistance comprising the MOSFET and also securing the temperature compensation by utilizing the difference of the temperature characteristics between the output transistor and the feedback element. CONSTITUTION:Voltage amplifying steps 31 and 32 comprising the MOSFET of C.MOS structure drive power amplifying step 33 consisting of bipolar transistor Tr. At the same time, feedback element 34 comprising the resistance composed of the MOSFET applies the feedback between the input and output to perform setting of the amplification factor and the necessary frequency characteristics. The drain current of the MOSFET shows the negative temperature characteristics, and the collector current of output Tr33 features the positive temperature characteristics each. Thus, the failure such as the thermal runaway and the like are liable to occur. Utilizing the difference of these temperature characteristics, Tr33 and element 34 are distributed close to each other within the chip. As a result, the resistance value of element 34 reduces by the increment of the junction temperature of Tr33 to lower the amplification factor. Accordingly, the drive voltage of the output step is lowered down to perform the temperature compensation.，下面是Integrated circuit专利的具体信息内容。
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