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    • 1. 发明授权
    • Variable gain amplifier
    • 可变增益放大器
    • US07068107B2
    • 2006-06-27
    • US10805297
    • 2004-03-22
    • Wen-Chi WangChao-Cheng LeeJui-Cheng HuangJui-Yuan Tsai
    • Wen-Chi WangChao-Cheng LeeJui-Cheng HuangJui-Yuan Tsai
    • H03F3/30
    • H03G1/0088
    • The variable gain amplifier of the present invention includes at least an operation amplifier. By choosing one of output stages, a feedback resistor is selected and the gain of the variable gain amplifier is decided according to the resistance of the selected feedback resistor, as desired. By adjusting the gain of the variable gain amplifier, the received signals can be amplified or attenuated in accordance with design requirement. The variable gain amplifier can include a two-stage architecture, in which a first stage is used for coarse gain adjustment and a second stage is used for fine gain adjustment. The gain of the two-stage variable gain amplifier can be easily adjusted to a desired value.
    • 本发明的可变增益放大器至少包括一个运算放大器。 通过选择输出级之一,根据需要选择反馈电阻,并根据所选反馈电阻的电阻决定可变增益放大器的增益。 通过调整可变增益放大器的增益,接收信号可以根据设计要求进行放大或衰减。 可变增益放大器可以包括两级架构,其中第一级用于粗增益调整,第二级用于精细增益调整。 两级可变增益放大器的增益可以很容易地调整到所需的值。
    • 2. 发明授权
    • Audio processing system for use in multi-channel audio chip
    • 音频处理系统用于多声道音频芯片
    • US07496417B2
    • 2009-02-24
    • US10734257
    • 2003-12-15
    • Chao-Cheng LeeJui-Cheng Huang
    • Chao-Cheng LeeJui-Cheng Huang
    • G06F17/00
    • H04S3/00
    • An audio processing system for used in a multi-channel audio chip includes a multiplexer, a digital-to-analog converter, a de-multiplexer, a controller and N sample-and-hold circuits. The multiplexer receives N digital signals and outputs the digital signals one by one in a time-division manner. The digital-to-analog converter receives the digital signals from the multiplexer and converts them into corresponding N analog signals. The de-multiplexer outputs the analog signals one by one in a time-division manner. The controller generates control signals to control the selection of the multiplexer and the de-multiplexer. The sample-and-hold circuits hold the analog signals for a predetermined period of time and then outputs the signals, respectively.
    • 用于多声道音频芯片的音频处理系统包括多路复用器,数模转换器,去多路复用器,控制器和N个采样和保持电路。 多路复用器接收N个数字信号并以时分方式逐个输出数字信号。 数模转换器从多路复用器接收数字信号并将其转换成相应的N个模拟信号。 解复用器以时分方式逐个输出模拟信号。 控制器产生控制信号以控制多路复用器和解复用器的选择。 采样保持电路将模拟信号保持预定的时间段,然后分别输出信号。
    • 3. 发明授权
    • Amplifier circuit
    • 放大器电路
    • US07138869B2
    • 2006-11-21
    • US10748667
    • 2003-12-31
    • Chao-Cheng LeeJui-Cheng HuangJui-Yuan TsaiWen-Chi Wang
    • Chao-Cheng LeeJui-Cheng HuangJui-Yuan TsaiWen-Chi Wang
    • H03G3/12
    • H03H11/126H03H7/24
    • An amplifier circuit having a high time constant. An operational amplifier includes a non-converting input terminal coupled to a ground, a converting input terminal and an output terminal. A first resistor network including at least one stage is coupled between the converting input terminal and the output terminal. Each stage of the first resistor network includes a first node, a first current path and a second current path connected to the first node. The first current path of each stage of the first resistor network is connected to the first node of the next stage, the second current path of each stage of the first resistor network is grounded, and the first current path of the first stage of the first resistor network is connected to the converting input terminal. A loading unit is coupled between the converting input terminal and the output terminal.
    • 具有高时间常数的放大器电路。 运算放大器包括耦合到地的非转换输入端,转换输入端和输出端。 包括至少一个级的第一电阻网络耦合在转换输入端和输出端之间。 第一电阻网络的每个级包括连接到第一节点的第一节点,第一电流路径和第二电流路径。 第一电阻网络的每个级的第一电流路径连接到下一级的第一节点,第一电阻网络的每一级的第二电流路径接地,并且第一电阻网络的第一级的第一电流路径 电阻网络连接到转换输入端。 加载单元耦合在转换输入端和输出端之间。
    • 6. 发明授权
    • Over-sampling digital-to-analog converter with variable sampling frequencies
    • 具有可变采样频率的过采样数模转换器
    • US06911927B2
    • 2005-06-28
    • US10310323
    • 2002-12-05
    • Wen-Chi WangShih-Yu KuJui-Cheng HuangYi-Shu Chang
    • Wen-Chi WangShih-Yu KuJui-Cheng HuangYi-Shu Chang
    • H03M3/00
    • H03M3/50
    • The present invention offers an over-sampling digital-to-analog converter with variable sampling frequencies to process input signals of variable sampling frequencies. The over-sampling digital-to-analog converter comprises an expander, which expands said input signals with a fixed rate of M to produce over-sampling signals; a digital low-pass filter, which filters out high-frequency ingredients of over-sampling signals and then outputs data with a first rate; a data buffer, which receives the outputted data by said digital low-pass filter with the first rate and outputs the data with a second rate; a modulator, which reads data in said data buffer with the second rate and modulates the data; a digital-to-analog converter, which converts the modulated data to analog signals; and an analog low-pass filter, which filters out high-frequency ingredients of said analog signals for producing output signals. No matter how the sampling frequency of the input signals is, due to reading rates of the modulator are the same, the over-sampling digital-to-analog converter ensures that noise is mostly distributed in the high-frequency band.
    • 本发明提供具有可变采样频率的过采样数模转换器来处理可变采样频率的输入信号。 过采样数模转换器包括扩展器,其以固定速率M扩展所述输入信号以产生过采样信号; 数字低通滤波器,滤除过采样信号的高频成分,然后以第一速率输出数据; 数据缓冲器,其以所述第一速率由所述数字低通滤波器接收输出的数据,并以第二速率输出数据; 调制器,以第二速率读取所述数据缓冲器中的数据并调制数据; 数模转换器,其将调制数据转换为模拟信号; 以及模拟低通滤波器,其滤除所述模拟信号的高频成分以产生输出信号。 无论输入信号的采样频率如何,由于调制器的读取速率相同,过采样数模转换器可确保噪声主要分布在高频段。
    • 9. 发明申请
    • Thermal Sensor with Second-Order Temperature Curvature Correction
    • 具有二阶温度曲率校正的热传感器
    • US20140092939A1
    • 2014-04-03
    • US13632498
    • 2012-10-01
    • Ching-Ho ChangJui-Cheng HuangYung-Chow Peng
    • Ching-Ho ChangJui-Cheng HuangYung-Chow Peng
    • G01K7/01H01L23/544
    • G01K7/01G01K15/005
    • Some embodiments of the present disclosure relate to a stacked integrated chip structure having a thermal sensor that detects a temperature of one or a plurality of integrated chips. In some embodiments, the stacked integrated chip structure has a main integrated chip and a secondary integrated chip located on an interposer wafer. The main integrated chip has a reference voltage source that generates a bias current. The secondary integrated chip has a second thermal diode that receives the bias current and based thereupon generates a second thermal sensed voltage and a second reference voltage that is proportional to a temperature of the secondary integrated chip. A digital thermal sensor within the main integrated chip determines a temperature of the secondary integrated chip based upon as comparison of the second thermal sensed voltage and the reference voltage.
    • 本公开的一些实施例涉及具有检测一个或多个集成芯片的温度的热传感器的堆叠集成芯片结构。 在一些实施例中,堆叠集成芯片结构具有位于插入器晶片上的主集成芯片和次集成芯片。 主集成芯片具有产生偏置电流的参考电压源。 次级集成芯片具有接收偏置电流的第二热二极管,并且基于此产生第二热感测电压和与次级集成芯片的温度成比例的第二参考电压。 基于与第二热感测电压和参考电压的比较,主集成芯片内的数字热传感器确定二次集成芯片的温度。
    • 10. 发明授权
    • Small area high performance cell-based thermal diode
    • 小面积高性能基于电池的热二极管
    • US09383264B2
    • 2016-07-05
    • US13428549
    • 2012-03-23
    • Yung-Chow PengChing-Ho ChangJui-Cheng Huang
    • Yung-Chow PengChing-Ho ChangJui-Cheng Huang
    • G01K7/00G01K7/01
    • G01K7/01Y10T307/76
    • A thermal sensing system includes a circuit having a layout including standard cells arranged in rows and columns. First and second current sources provide first and second currents, respectively. The thermal sensing system includes thermal sensing units, first and second switching modules, and an analog to digital converter (ADC). Each thermal sensing unit is configured to provide a voltage drop dependent on a temperature at that thermal sensing unit. The first switching module is configured to select one of the thermal sensing units. The second switching module includes at least one switch controllable by a control signal. The at least one switch is configured to selectively couple the thermal sensing units, based on the control signal, to one of the first and second current sources, via the first switching module. The ADC is configured to convert an analog voltage, provided by the selected thermal sensing unit, to a digital value.
    • 热感测系统包括具有布置成行和列的标准单元的布局的电路。 第一和第二电流源分别提供第一和第二电流。 热感测系统包括热敏单元,第一和第二开关模块以及模数转换器(ADC)。 每个热敏单元被配置成提供取决于该热感测单元处的温度的电压降。 第一开关模块被配置为选择一个热感测单元。 第二开关模块包括可由控制信号控制的至少一个开关。 所述至少一个开关被配置为经由所述第一开关模块将所述热感测单元基于所述控制信号选择性地耦合到所述第一和第二电流源之一。 ADC配置为将所选热敏单元提供的模拟电压转换为数字值。