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公开(公告)号：US20140340068A1
公开(公告)日：2014-11-20
申请号：US14164259
申请日：2014-01-27
发明人： Wen-Sheng Lin
IPC分类号： G05F3/08
摘要： A bandgap reference circuit is provided and which includes an operating voltage, a current mirror, a first p-channel metal-oxide semiconductor (PMOS) transistor and an amplifier. The current mirror is coupled to the operating voltage. The first PMOS transistor is coupled to the operating voltage and the current mirror. The amplifier is coupled to the current mirror and the first PMOS transistor. When the bandgap reference circuit is activated, the operating voltage starts to supply voltage such that the first PMOS transistor is turned on first. When the operating voltage is higher than a preset voltage level, the first PMOS transistor is turned off, in order to complete an start-up process.
摘要翻译： 提供了带隙参考电路，其包括工作电压，电流镜，第一p沟道金属氧化物半导体（PMOS）晶体管和放大器。 电流镜与工作电压耦合。 第一PMOS晶体管耦合到工作电压和电流镜。 放大器耦合到电流镜和第一PMOS晶体管。 当带隙参考电路被激活时，工作电压开始提供电压，使得第一PMOS晶体管首先导通。 当工作电压高于预设电压电平时，第一个PMOS晶体管关闭，以完成启动过程。
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公开(公告)号：US20160181997A1
公开(公告)日：2016-06-23
申请号：US14707081
申请日：2015-05-08
发明人： Wen-Sheng Lin
IPC分类号： H03F3/45
CPC分类号： H03F1/0266 , H03F3/187 , H03F3/45475 , H03F2200/03 , H03F2200/471 , H03F2203/45008 , H03F2203/45101 , H03F2203/45112 , H03F2203/45138 , H03F2203/45596
摘要： A signal amplifying circuit includes an operational amplifying module, a level adjusting module, and a voltage module. The operational amplifying module has a first input terminal, a second input terminal, and an output terminal The output terminal outputs a single-ended output signal having a level of zero. The level adjusting module has a control node and coupled to the first input terminal and the second input terminal respectively. The level adjusting module receives a first input signal and a second input signal of a pair of differential input signals respectively. The first input signal and the second input signal both have a first level but have inversed phases. The voltage module is coupled to the control node and used to provide a voltage signal having a second level to the control node.
摘要翻译： 信号放大电路包括运算放大模块，电平调节模块和电压模块。 运算放大模块具有第一输入端子，第二输入端子和输出端子。输出端子输出具有零电平的单端输出信号。 电平调整模块具有控制节点并分别耦合到第一输入端和第二输入端。 电平调整模块分别接收一对差分输入信号的第一输入信号和第二输入信号。 第一输入信号和第二输入信号均具有第一电平但具有反相。 电压模块耦合到控制节点，用于向控制节点提供具有第二电平的电压信号。
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公开(公告)号：US20160173034A1
公开(公告)日：2016-06-16
申请号：US14711780
申请日：2015-05-14
发明人： Wen-Sheng Lin
CPC分类号： H03F3/187 , H03F3/45192 , H03F3/45475 , H03F3/4565 , H03F2200/03 , H03F2203/45008 , H03F2203/45082 , H03F2203/45116 , H03F2203/45418 , H03F2203/45424
摘要： An audio amplifying device including a first differential amplifier, a first buffer and a common-mode feedback circuit is provided. The first differential amplifier generates a differential output signal according to a differential input signal, wherein the differential output signal includes a first output signal and a second output signal. The first buffer generates an audio signal according to the first output signal. The common-mode feedback circuit, the first buffer and the first differential amplifier form a feedback loop, and the audio amplifying device controls a bias state of the first differential amplifier through the feedback loop so as to adjust a DC level of the audio signal to a clamping voltage.
摘要翻译： 提供一种包括第一差分放大器，第一缓冲器和共模反馈电路的音频放大装置。 第一差分放大器根据差分输入信号产生差分输出信号，其中差分输出信号包括第一输出信号和第二输出信号。 第一缓冲器根据第一输出信号产生音频信号。 共模反馈电路，第一缓冲器和第一差分放大器形成反馈回路，并且音频放大装置通过反馈回路控制第一差分放大器的偏置状态，以便将音频信号的直流电平调整为 钳位电压。
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公开(公告)号：US20170085251A1
公开(公告)日：2017-03-23
申请号：US15083297
申请日：2016-03-29
发明人： Wen-Sheng Lin
CPC分类号： H03H19/004 , H03F3/45475 , H03F3/45968 , H03F3/68 , H03F2200/271 , H03F2200/411 , H03F2203/45138 , H03F2203/45522 , H03F2203/45528 , H03F2203/45562 , H03F2203/45616 , H03F2203/45644 , H03F2203/45726
摘要： A preamplifier including a programmable gain amplifying circuit and a filtering circuit is provided. The programmable gain amplifying circuit has a single output terminal. The filtering circuit includes a first switched-capacitor filter and a second switched-capacitor filter. The first switched-capacitor filter is coupled to the single output terminal. The second switched-capacitor filter is connected in parallel with the first switched-capacitor filter. The first switched-capacitor filter and the second switched-capacitor filter are respectively switched between a first mode and a second mode. When the first switched-capacitor filter is switched to the first mode, the second switched-capacitor filter is switched to the second mode.
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公开(公告)号：US09348352B2
公开(公告)日：2016-05-24
申请号：US14164259
申请日：2014-01-27
发明人： Wen-Sheng Lin
摘要： A bandgap reference circuit is provided and which includes an operating voltage, a current mirror, a first p-channel metal-oxide semiconductor (PMOS) transistor and an amplifier. The current mirror is coupled to the operating voltage. The first PMOS transistor is coupled to the operating voltage and the current mirror. The amplifier is coupled to the current mirror and the first PMOS transistor. When the bandgap reference circuit is activated, the operating voltage starts to supply voltage such that the first PMOS transistor is turned on first. When the operating voltage is higher than a preset voltage level, the first PMOS transistor is turned off, in order to complete an start-up process.
摘要翻译： 提供了带隙参考电路，其包括工作电压，电流镜，第一p沟道金属氧化物半导体（PMOS）晶体管和放大器。 电流镜与工作电压耦合。 第一PMOS晶体管耦合到工作电压和电流镜。 放大器耦合到电流镜和第一PMOS晶体管。 当带隙参考电路被激活时，工作电压开始提供电压，使得第一PMOS晶体管首先导通。 当工作电压高于预设电压电平时，第一个PMOS晶体管关闭，以完成启动过程。
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