OUTPUT BUFFER CIRCUIT,申请号JP19920281885-传众专利搜索

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发明名称	OUTPUT BUFFER CIRCUIT
摘要	PURPOSE:To reduce a power source noise at the time of switching and to prevent a through current at the time of switching by causing an inverter of a preceding stage which drives the inside of the buffer of a last stage, to execute constant current operation. CONSTITUTION:The inverter 21-1 of the preceding stage, which controls the gate of PMOSFET 19 of the last stage is composed of PMOSFET 31 and NMOSFET 32 which are provided with an input signal IN and NMOSFET 33 between whose drain/source a drain with a source are connected. The gate of NMOSFET 33 is connected to that of NMOSFET 16 in order to mirror a constant current from a constant current generation circuit 10. PMOSFET 31 is provided with large driving capability and in comparison with it, MOSFET 32 is provided with small driving capability. The inverter 21-2 of the preceding stage of NMOSFET 20 is also composed of PMOSFET 41, NMOSFET 42 and PMOSFET 43 and the gate of MOSFET 43 is connected to the output terminal of an operational ampifier 12 in order to execute constant current mirror. Besides, NMOSFET 42 is provided with large driving capability and in comparison with it, P-channel MOSFET 41 is provided with smaller driving capability.
申请公布号	JPH06132797(A)	申请公布日期	1994.05.13
申请号	JP19920281885	申请日期	1992.10.20
申请人	TOSHIBA CORP;TOSHIBA MICRO ELECTRON KK	发明人	EBATO KOJI;MATSUKI KOJI
分类号	H03K5/135	主分类号	H03K5/135
代理机构		代理人
主权项
地址

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