发明名称 PN INPUT TYPE CMOS OPERATIONAL AMPLIFIER
摘要 PROBLEM TO BE SOLVED: To provide a CMOS operational amplifier which has small offset drift and also does not need additional circuits. SOLUTION: This PN input type operational amplifier consists of a pair of PMOS transistors QP1 and QP2 for a differential input and a pair of NMOS transistors QN1 and QN2 for a differential input. Then, a Vth drift of the pair of the PMOS transistors QP1 and QP2 for a differential input and the pair of the NMOS transistors QN1 and QN2 for a differential input is set, so as to make offset drift small.
申请公布号 JP2001028522(A) 申请公布日期 2001.01.30
申请号 JP19990199994 申请日期 1999.07.14
申请人 RICOH CO LTD 发明人 UEDA KEITOKU
分类号 H03F3/45;H03F3/34;(IPC1-7):H03F3/34 主分类号 H03F3/45
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