Logarithmic amplifier having improved speed response,申请号US19950527202-传众专利搜索

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发明名称	Logarithmic amplifier having improved speed response
摘要	A logarithmic amplifier includes an operational amplifier, an element for logarithmic conversion purposes connected to a feedback circuit of the operational amplifier, an oscillation prevention circuit having a capacitor connected in parallel with the logarithmic conversion element, and a control circuit for controlling the oscillation prevention circuit in such a way that the amount of feedback by way of the oscillation prevention circuit is reduced as an input current to the operational amplifier becomes smaller. To improve the high-speed response characteristics of the logarithmic operational amplifier, the operational amplifier is made up of a composite amplifier consisting of an FET input type operational amplifier and a bipolar input type operational amplifier.
申请公布号	US5528191(A)	申请公布日期	1996.06.18
申请号	US19950527202	申请日期	1995.09.12
申请人	FUJI PHOTO FILM CO., LTD.	发明人	YASUDA, HIROAKI
分类号	G06G7/24;H03G7/00;H03G7/08;(IPC1-7):H03G11/08	主分类号	G06G7/24
代理机构		代理人
主权项
地址

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