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1. 发明申请

WO1997003496A1 CASCODE OPERATIONAL AMPLIFIER WITH MULTIPLE INPUT STAGE 审中-公开
标题翻译：具有多个输入级的CASCODE操作放大器
公开(公告)号：WO1997003496A1
公开(公告)日：1997-01-30
申请号：PCT/US1996002822
申请日：1996-03-01
申请人： ADVANCED MICRO DEVICES, INC.
发明人： ADVANCED MICRO DEVICES, INC. , HWANG, Chien-Meen , GERSHON, Eugen
IPC分类号： H03F03/45
CPC分类号： H03F3/4521 , H03F3/45188 , H03F3/45192 , H03F3/4565 , H03F3/45654 , H03F2203/45578
摘要： Disclosed herein is a cascode operational amplifier design with multiple input stages, and methods of operating the same, resulting in enhanced output gain and unity gain bandwidth operational amplifiers. The cascode operational amplifier comprises a differential input block which receives a differential input having a first differential input stage and a second differential input stage. A cascode block is coupled to the differential input block and provides a differential output for the operational amplifier. A common mode feedback block coupled to the second differential input stage of the differential input block and the differential output of the cascode block stabilizes a DC output level for the differential output. A load block is coupled to the differential output of the cascode block and applies a resistive load to the differential output in response to a differential input signal applied to the differential input block.
摘要翻译：这里公开了具有多个输入级的共源共栅运算放大器设计及其操作方法，导致增强的输出增益和单位增益带宽运算放大器。共源共栅运算放大器包括差分输入块，其接收具有第一差分输入级和第二差分输入级的差分输入。共源共栅块耦合到差分输入块，并为运算放大器提供差分输出。耦合到差分输入块的第二差分输入级的共模反馈块和共源共栅组的差分输出稳定用于差分输出的DC输出电平。负载块耦合到共源共栅块的差分输出，并响应于施加到差分输入块的差分输入信号，向差分输出施加电阻性负载。

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