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1.发明申请公开(公告)号：US20130154863A1
公开(公告)日：2013-06-20
申请号：US13590491
申请日：2012-08-21
申请人： Chen-Yen HO , Chi-Lun LO , Hung-Chieh TSAI , Yu-Hsin LIN
发明人： Chen-Yen HO , Chi-Lun LO , Hung-Chieh TSAI , Yu-Hsin LIN
CPC分类号： H03F1/0205 , H03F3/265 , H03F3/30 , H03F3/3023 , H03F3/45071 , H03F3/45179 , H03F3/45183 , H03F3/45475 , H03F2200/18 , H03F2203/30021 , H03F2203/30033 , H03F2203/45022 , H03F2203/45134 , H03F2203/45138 , H03M3/39 , H03M3/50
摘要： An amplifier, a fully-differential amplifier and a delta-sigma modulator are disclosed. The disclosed amplifier includes a front-end gain stage, an AC-coupled push-pull output stage and a compensation circuit. The compensation circuit is coupled between the front-end gain stage and an output terminal of the amplifier. The AC-coupled push-pull output stage uses an AC-coupled capacitor (which is a passive two terminal electrical component rather than a stray or parasitic capacitance of a transistor) to couple the front-end gain stage to a gate of a top or bottom transistor of a push-pull structure introduced in the AC-coupled push-pull output stage, and uses a resistance component to couple a gate of the top or bottom transistor (depending on which one is coupled to the AC-coupled capacitor) to a bias voltage level.
摘要翻译： 公开了放大器，全差分放大器和Δ-Σ调制器。 所公开的放大器包括前端增益级，AC耦合推挽输出级和补偿电路。 补偿电路耦合在前端增益级与放大器的输出端之间。 交流耦合推挽输出级使用交流耦合电容器（其是无源双端电气元件而不是晶体管的杂散或寄生电容），以将前端增益级耦合到顶部的栅极或 引入在AC耦合推挽输出级中的推挽结构的底部晶体管，并且使用电阻分量将顶部或底部晶体管的栅极（取决于耦合到AC耦合电容器的栅极）耦合到 偏置电压电平。
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公开(公告)号：US08638250B2
公开(公告)日：2014-01-28
申请号：US13590491
申请日：2012-08-21
申请人： Chen-Yen Ho , Chi-Lun Lo , Hung-Chieh Tsai , Yu-Hsin Lin
发明人： Chen-Yen Ho , Chi-Lun Lo , Hung-Chieh Tsai , Yu-Hsin Lin
IPC分类号： H03M3/00
CPC分类号： H03F1/0205 , H03F3/265 , H03F3/30 , H03F3/3023 , H03F3/45071 , H03F3/45179 , H03F3/45183 , H03F3/45475 , H03F2200/18 , H03F2203/30021 , H03F2203/30033 , H03F2203/45022 , H03F2203/45134 , H03F2203/45138 , H03M3/39 , H03M3/50
摘要： An amplifier, a fully-differential amplifier and a delta-sigma modulator are disclosed. The disclosed amplifier includes a front-end gain stage, an AC-coupled push-pull output stage and a compensation circuit. The compensation circuit is coupled between the front-end gain stage and an output terminal of the amplifier. The AC-coupled push-pull output stage uses an AC-coupled capacitor (which is a passive two terminal electrical component rather than a stray or parasitic capacitance of a transistor) to couple the front-end gain stage to a gate of a top or bottom transistor of a push-pull structure introduced in the AC-coupled push-pull output stage, and uses a resistance component to couple a gate of the top or bottom transistor (depending on which one is coupled to the AC-coupled capacitor) to a bias voltage level.
摘要翻译： 公开了放大器，全差分放大器和Δ-Σ调制器。 所公开的放大器包括前端增益级，AC耦合推挽输出级和补偿电路。 补偿电路耦合在前端增益级与放大器的输出端之间。 交流耦合推挽输出级使用交流耦合电容器（其是无源双端电气元件而不是晶体管的杂散或寄生电容），以将前端增益级耦合到顶部的栅极或 引入到AC耦合推挽输出级中的推挽结构的底部晶体管，并且使用电阻分量将顶部或底部晶体管的栅极（取决于耦合到AC耦合电容器的栅极）耦合到 偏置电压电平。
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公开(公告)号：US08890611B2
公开(公告)日：2014-11-18
申请号：US13612784
申请日：2012-09-12
申请人： Hung-Chieh Tsai , Chi-Lun Lo , Chen-Yen Ho , Yu-Hsin Lin
发明人： Hung-Chieh Tsai , Chi-Lun Lo , Chen-Yen Ho , Yu-Hsin Lin
CPC分类号： H03F3/45179 , H03F1/14 , H03F1/3211 , H03F1/483 , H03F3/193 , H03F3/3023 , H03F3/45 , H03F3/45076 , H03F3/45188 , H03F2200/36 , H03F2203/45222 , H03F2203/45521 , H03F2203/45526 , H03F2203/45626
摘要： An operational amplifier circuit includes a first stage amplifier circuit, a second stage amplifier circuit and a first feedforward circuit. The first stage amplifier circuit is coupled to a first input node for receiving a first input signal and amplifying the first input signal to generate a first amplified signal. The second stage amplifier circuit is coupled to the first stage amplifier circuit for receiving the first amplified signal and amplifying the first amplified signal to generate a first output signal at a first output node. The first feedforward circuit is coupled between the first input node and the second stage amplifier circuit for feeding the first input signal forward to the second stage amplifier circuit.
摘要翻译： 运算放大器电路包括第一级放大器电路，第二级放大器电路和第一前馈电路。 第一级放大器电路耦合到第一输入节点，用于接收第一输入信号并放大第一输入信号以产生第一放大信号。 第二级放大器电路耦合到第一级放大器电路，用于接收第一放大信号并放大第一放大信号以在第一输出节点产生第一输出信号。 第一前馈电路耦合在第一输入节点和第二级放大器电路之间，用于将第一输入信号向前馈送到第二级放大器电路。
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公开(公告)号：US08552894B2
公开(公告)日：2013-10-08
申请号：US13450866
申请日：2012-04-19
申请人： Sheng-Jui Huang , Chen-Yen Ho
发明人： Sheng-Jui Huang , Chen-Yen Ho
IPC分类号： H03M3/00
摘要： A sigma-delta modulator includes a front portion and a hybrid portion to form a loop filter. The front portion includes integrator(s) and feed-forward path(s), and is arranged to provide a front signal by combining signals of the integrator(s) and feed-forward path(s). The hybrid portion is coupled to the front portion, and arranged to provide a filtered signal by combining an integration of the front signal and a weighting of the front signal. The filtered signal is quantized, converted from digital to analog, and fed back to the loop filter.
摘要翻译： Σ-Δ调制器包括前部和混合部分以形成环路滤波器。 前部包括积分器和前馈路径，并且被布置成通过组合积分器和前馈路径的信号来提供前信号。 混合部分耦合到前部，并且被布置成通过组合前信号的积分和前信号的加权来提供滤波信号。 经滤波的信号被量化，从数字转换为模拟，并反馈到环路滤波器。
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公开(公告)号：US20130200953A1
公开(公告)日：2013-08-08
申请号：US13612784
申请日：2012-09-12
申请人： Hung-Chieh TSAI , Chi-Lun LO , Chen-Yen HO , Yu-Hsin LIN
发明人： Hung-Chieh TSAI , Chi-Lun LO , Chen-Yen HO , Yu-Hsin LIN
CPC分类号： H03F3/45179 , H03F1/14 , H03F1/3211 , H03F1/483 , H03F3/193 , H03F3/3023 , H03F3/45 , H03F3/45076 , H03F3/45188 , H03F2200/36 , H03F2203/45222 , H03F2203/45521 , H03F2203/45526 , H03F2203/45626
摘要： An operational amplifier circuit includes a first stage amplifier circuit, a second stage amplifier circuit and a first feedforward circuit. The first stage amplifier circuit is coupled to a first input node for receiving a first input signal and amplifying the first input signal to generate a first amplified signal. The second stage amplifier circuit is coupled to the first stage amplifier circuit for receiving the first amplified signal and amplifying the first amplified signal to generate a first output signal at a first output node. The first feedforward circuit is coupled between the first input node and the second stage amplifier circuit for feeding the first input signal forward to the second stage amplifier circuit.
摘要翻译： 运算放大器电路包括第一级放大器电路，第二级放大器电路和第一前馈电路。 第一级放大器电路耦合到第一输入节点，用于接收第一输入信号并放大第一输入信号以产生第一放大信号。 第二级放大器电路耦合到第一级放大器电路，用于接收第一放大信号并放大第一放大信号以在第一输出节点产生第一输出信号。 第一前馈电路耦合在第一输入节点和第二级放大器电路之间，用于将第一输入信号向前馈送到第二级放大器电路。
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公开(公告)号：US20120319881A1
公开(公告)日：2012-12-20
申请号：US13450866
申请日：2012-04-19
申请人： Sheng-Jui Huang , Chen-Yen Ho
发明人： Sheng-Jui Huang , Chen-Yen Ho
IPC分类号： H03M3/04
摘要： A sigma-delta modulator includes a front portion and a hybrid portion to form a loop filter. The front portion includes integrator(s) and feed-forward path(s), and is arranged to provide a front signal by combining signals of the integrator(s) and feed-forward path(s). The hybrid portion is coupled to the front portion, and arranged to provide a filtered signal by combining an integration of the front signal and a weighting of the front signal. The filtered signal is quantized, converted from digital to analog, and fed back to the loop filter.
摘要翻译： Σ-Δ调制器包括前部和混合部分以形成环路滤波器。 前部包括积分器和前馈路径，并且被布置成通过组合积分器和前馈路径的信号来提供前信号。 混合部分耦合到前部，并且被布置成通过组合前信号的积分和前信号的加权来提供滤波信号。 经滤波的信号被量化，从数字转换为模拟，并反馈到环路滤波器。
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