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1. 发明授权

US08791754B2 Programmable gain amplifier with amplifier common mode sampling system 有权
标题翻译：具有放大器共模采样系统的可编程增益放大器
公开(公告)号：US08791754B2
公开(公告)日：2014-07-29
申请号：US13592074
申请日：2012-08-22
申请人： Colin G. Lyden , Roberto S. Maurino , Damien J. McCartney
发明人： Colin G. Lyden , Roberto S. Maurino , Damien J. McCartney
IPC分类号： H03F1/02
CPC分类号： H03G3/008
摘要： A programmable gain amplifier (“PGA”) may include a differential amplifier, a pair of input capacitors, a pair of feedback capacitors provided in feedback configuration about the amplifier, a first chop circuit, provided at an input of the PGA and an output of the PGA and a second chop circuit provided at an output of the PGA. The PGA also may include circuit systems to sample voltages across the input capacitors in a sampling phase. The sampled voltages may correspond to a difference between a common mode voltage of input signals to the PGA and a common mode voltage of the differential amplifier. The sampled voltage, thus, defines a common mode voltage at the amplifier's inputs during other phases of operation, when the chop circuits are operational.
摘要翻译：可编程增益放大器（“PGA”）可以包括差分放大器，一对输入电容器，在放大器的反馈配置中提供的一对反馈电容器，设置在PGA输入端的第一斩波电路， PGA和设置在PGA输出端的第二斩波电路。 PGA还可以包括在采样阶段对输入电容器两端的电压进行采样的电路系统。采样电压可以对应于PGA的输入信号的共模电压与差分放大器的共模电压之间的差。因此，当斩波电路工作时，采样电压在其他操作阶段确定放大器输入端的共模电压。

2. 发明授权

US09054660B1 Amplifying system 有权
标题翻译：放大系统
公开(公告)号：US09054660B1
公开(公告)日：2015-06-09
申请号：US14152515
申请日：2014-01-10
申请人： Kirubakaran Ramalingam , Rabeesh Vadassery Gopinathan , Kaushal Kumar Jha , Damien J. McCartney
发明人： Kirubakaran Ramalingam , Rabeesh Vadassery Gopinathan , Kaushal Kumar Jha , Damien J. McCartney
IPC分类号： H03F1/48 , H03F3/45 , H03G3/00 , H03M1/66 , H03M1/70 , H03G3/30
CPC分类号： H03G3/001 , H03G1/0088
摘要： A digital-to-analog conversion system includes a digital-to-analog converter and an output stage for converting an output signal of the digital-to-analog converter into a voltage range. The output stage includes a first amplifier including a first input for receiving the output signal of the digital-to-analog converter, a first resistance element coupled between a second input and an output of the first amplifier, a second resistance element coupled between the second input of the first amplifier and a ground reference, and a third resistance element switchably coupled from the second input of the first amplifier to an offset voltage.
摘要翻译：数模转换系统包括数模转换器和用于将数模转换器的输出信号转换成电压范围的输出级。输出级包括第一放大器，其包括用于接收数模转换器的输出信号的第一输入端，耦合在第一放大器的第二输入端和第二输出端之间的第一电阻元件，第一放大器的输入和接地基准，以及从第一放大器的第二输入端切换耦合到偏移电压的第三电阻元件。

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