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公开(公告)号：EP3706313B1
公开(公告)日：2024-08-07
申请号：EP20160431.1
申请日：2020-03-02
CPC分类号： H03F1/523 , H03F3/2173 , H03F3/187 , H03F3/3064 , H03F3/3032 , H03F2200/0320130101 , H03F2200/45620130101 , H03F2200/46220130101 , H03F2200/47720130101 , H03F2200/47420130101 , H03F2200/48120130101 , H03F2203/3010220130101 , H03F2203/3007820130101 , H03F2203/3006320130101 , H03F3/45475 , H03F3/45273 , H03F2203/4552820130101
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公开(公告)号：EP0325299A2
公开(公告)日：1989-07-26
申请号：EP89101126.4
申请日：1989-01-23
申请人： NEC CORPORATION
发明人： Yukawa, Akira
IPC分类号： H03F3/30
CPC分类号： H03F3/3032 , H03F3/45192 , H03F3/45659 , H03F2203/45008 , H03F2203/45012 , H03F2203/45074 , H03F2203/45296 , H03F2203/45508 , H03F2203/45711
摘要： An operational amplifier comprises a differential input stage, first and second folded cascade stages connected to the differential input stage, and first and second output inverting amplifiers. The first output inverting amplifier is driven by the output of the first folded cascade stage, and the second output inverting amplifier is driven through a current mirror by the output of the second folded cascade stage, such that a push pull output stage is provided in the operational amplifier. As a result, a driving performance is much improved in regard to a capacitive load, and a range of an output voltage can be expanded equally to a power supply voltage.
摘要翻译： 运算放大器包括差分输入级，连接到差分输入级的第一和第二折叠级联级以及第一和第二输出反相放大器。 第一输出反相放大器由第一折叠级联级的输出驱动，并且第二输出反相放大器通过第二折叠级联级的输出通过电流镜驱动，使得推挽输出级设置在 运算放大器。 结果，关于电容性负载，驱动性能大大提高，并且输出电压的范围可以等同于电源电压。
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公开(公告)号：EP3228001A1
公开(公告)日：2017-10-11
申请号：EP14806321.7
申请日：2014-12-04
发明人： SJÖLAND, Henrik
CPC分类号： H03F1/3217 , H03F3/193 , H03F3/265 , H03F3/3028 , H03F3/3032 , H03F3/3071 , H03F3/3076 , H03F2200/294 , H03F2200/451 , H03F2203/30003 , H03F2203/30031 , H03F2203/30051 , H03F2203/30057 , H04B1/16
摘要： An integrated circuit comprises a first amplifier circuit with a push-pull amplifier configured to be calibrated to a low second order distortion. The integrated circuit further comprises a second amplifier circuit with at least one push-pull amplifier, wherein a size ratio between sizes of the transistors is adjustable by adjusting the size of at least one transistor device. The size ratio can be consecutively adjusted to a plurality of values, and for each value, a first output signal of a push-pull amplifier with an applied test signal and a second output signal of a push-pull amplifier without applied test signal, are determined. The size ratio for which a difference between the push-pull amplifier output signals is closest to zero is determined, and the push-pull amplifier of the first amplifier circuit is calibrated in dependence of the determined size ratio.
摘要翻译： 集成电路包括具有推挽放大器的第一放大器电路，其被配置为被校准为低二阶失真。 该集成电路进一步包括具有至少一个推挽放大器（20,21）的第二放大器电路（15），其中晶体管尺寸之间的尺寸比可通过调节至少一个晶体管器件的尺寸来调节。 可以将尺寸比连续调节到多个值，并且对于每个值，具有施加的测试信号（LO in）和第二输出信号（V 2）的推挽式放大器的第一输出信号（V 1） 确定了没有施加测试信号的推挽式放大器。 确定推挽放大器输出信号（V 1，V 2）之间的差最接近于零的尺寸比，并且根据所确定的尺寸比来校准第一放大器电路的推挽放大器。
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公开(公告)号：EP0325299A3
公开(公告)日：1990-08-01
申请号：EP89101126.4
申请日：1989-01-23
申请人： NEC CORPORATION
发明人： Yukawa, Akira
IPC分类号： H03F3/30
CPC分类号： H03F3/3032 , H03F3/45192 , H03F3/45659 , H03F2203/45008 , H03F2203/45012 , H03F2203/45074 , H03F2203/45296 , H03F2203/45508 , H03F2203/45711
摘要： An operational amplifier comprises a differential input stage, first and second folded cascade stages connected to the differential input stage, and first and second output inverting amplifiers. The first output inverting amplifier is driven by the output of the first folded cascade stage, and the second output inverting amplifier is driven through a current mirror by the output of the second folded cascade stage, such that a push pull output stage is provided in the operational amplifier. As a result, a driving performance is much improved in regard to a capacitive load, and a range of an output voltage can be expanded equally to a power supply voltage.
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