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    • 4. 发明申请
    • METHOD OF ALGORITHMIC ANALOG-TO-DIGITAL CONVERSION AND ALGORITHMIC ANALOG-TO-DIGITAL CONVERTER
    • 算法模拟数字转换和算法模数转换器的方法
    • US20090096646A1
    • 2009-04-16
    • US12198837
    • 2008-08-26
    • Seung Chul LEEJae Won NAMYoung Deuk JEONJong Kee KWON
    • Seung Chul LEEJae Won NAMYoung Deuk JEONJong Kee KWON
    • H03M1/12
    • H03M1/1225H03M1/167
    • Provided are a method of algorithmic analog-to-digital conversion and an algorithmic Analog-to-Digital Converter (ADC). The algorithmic ADC includes a Multiplying Digital-to-Analog Converter (MDAC). The MDAC includes a Digital-to-Analog Converter (DAC) for converting a first digital signal into an analog signal, a subtractor for calculating a difference between the signal output from the DAC and an analog signal input from a first Sample and Hold Amplifier (SHA), an amplifier for amplifying the difference, a first capacitor unit connected with an output end of the first SHA and an input end of the amplifier through a first switching unit, a second capacitor unit connected with the input end and an output end of the amplifier through a second switching unit, and a third capacitor unit connected with the input end and the output end of the amplifier through a third switching unit.
    • 提供了一种算法模数转换方法和算法模数转换器(ADC)。 该算法ADC包括一个乘法数字模拟转换器(MDAC)。 MDAC包括用于将第一数字信号转换为模拟信号的数模转换器(DAC),减法器,用于计算从DAC输出的信号与从第一采样和保持放大器输入的模拟信号之间的差值 SHA),用于放大差分的放大器,通过第一开关单元与第一SHA的输出端连接的第一电容器单元和放大器的输入端,与输入端连接的第二电容器单元和输出端 通过第二开关单元的放大器,以及通过第三开关单元与放大器的输入端和输出端连接的第三电容器单元。
    • 7. 发明申请
    • DC-DC CONVERTER CAPABLE OF CONFIGURING TOPOLOGY
    • DC-DC转换器,可配置拓扑
    • US20130033241A1
    • 2013-02-07
    • US13541108
    • 2012-07-03
    • Sewan HEOYil Suk YANGJong Kee KWON
    • Sewan HEOYil Suk YANGJong Kee KWON
    • G05F1/00
    • H02M3/1582
    • Disclosed is a DC-DC converter including: a switch unit controlling a flow of a current based on a buck-boost topology; a short circuit unit short circuited or opened according to an external setting to change a topology of the switch unit; an inductor storing a current induced by the switch unit; a topology selecting unit selecting a topology in response to an external input signal and generating a signal corresponding to the selected topology; a pulse width modulating unit generating a signal for determining an operation time of the switch unit; a reverse flow detecting unit detecting a reverse flow of a current flowing through the switch unit to generate a signal; and a switch control unit controlling the switch unit in response to signals of the topology selecting unit, the pulse width modulating unit and the reverse flow detecting unit.
    • 公开了一种DC-DC转换器,包括:开关单元,其控制基于降压 - 升压拓扑的电流; 短路单元根据外部设置短路或断开,以改变开关单元的拓扑; 存储由所述开关单元感应的电流的电感器; 拓扑选择单元响应于外部输入信号选择拓扑并产生对应于所选拓扑的信号; 脉冲宽度调制单元,生成用于确定开关单元的操作时间的信号; 检测流过所述开关单元的电流的反向流以产生信号的逆流检测单元; 以及开关控制单元,其响应于拓扑选择单元,脉冲宽度调制单元和反向流检测单元的信号来控制开关单元。
    • 9. 发明申请
    • GAIN CONTROL DEVICE AND AMPLIFIER USING THE SAME
    • 增益控制装置和使用它的放大器
    • US20100156534A1
    • 2010-06-24
    • US12507701
    • 2009-07-22
    • Yi Gyeong KIMMin Hyung CHOJong Kee KWON
    • Yi Gyeong KIMMin Hyung CHOJong Kee KWON
    • H03F3/45
    • H03F3/45475H03F2203/45528H03F2203/45591
    • Provided are a gain control device and an amplifier using the gain control device. The gain control device includes a first input resistance unit having a first variable resistor whose resistance is linearly variable and a first fixed resistor respectively receiving a first input signal and a second input signal having a sign different from the first input signal and outputting current through a first output terminal, and a second input resistance unit having a second fixed resistor and a second variable resistor whose resistance is linearly variable respectively receiving the first input signal and the second input signal and outputting current through a second output terminal.Since the gain control device can separately perform dB-linear gain control, it is easily combined with a circuit, such as a continuous-time sigma-delta modulator (SDM), a continuous-time filter, and a continuous-time analog-to-digital converter (ADC), and enables miniaturization and low power consumption.
    • 提供了增益控制装置和使用增益控制装置的放大器。 所述增益控制装置包括具有电阻为线性变化的第一可变电阻器和分别接收第一输入信号的第一固定电阻器和具有与第一输入信号不同的符号的第二输入信号的第一输入电阻单元, 第一输出端子和具有第二固定电阻器和第二可变电阻器的第二输入电阻单元,其电阻为线性变化,分别接收第一输入信号和第二输入信号,并通过第二输出端子输出电流。 由于增益控制装置可以单独执行dB线性增益控制,所以可以容易地与诸如连续时间Σ-Δ调制器(SDM),连续时间滤波器以及连续时间模拟到 数字转换器(ADC),并实现小型化和低功耗。