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    • 3. 发明公开
    • 멀티플라잉 디지털-아날로그 컨버터 및 이를 포함하는파이프라인 아날로그-디지털 컨버터
    • 将数字转换为模拟转换器和管线模拟到具有相同转换器的数字转换器
    • KR1020090093145A
    • 2009-09-02
    • KR1020080018503
    • 2008-02-28
    • 재단법인서울대학교산학협력재단
    • 김수환우종관
    • H03M1/12H03M1/66
    • H03M1/14H03M1/361H03M1/662H03M2201/2216H03M2201/6309H03M2201/76
    • A multiplying digital to analog converter and pipelined analog to a digital converter having the same are provided to obtain a desired value in a first timing by making the pipeline analog digital convertor have high gain in second timing. In a multiplying digital to analog converter and pipelined analog to a digital converter having the same, a sample/hold part(110) receives an analog signal. The sample/hold part produces an analog input signal by performing the sampling and holding calculation. A stage unit(120) receives analog input signal, and the stage part outputs a digital stage output power signal consisting of 1.5 bit or 2 bit. The stage part is divided into a first stage including a multiplying digital to analog converter and a second stage(122b) not including the multiplying digital to analog converter.
    • 提供一个乘法数模转换器和流水线模拟到具有该数字转换器的数字转换器,以通过使得流水线模拟数字转换器在第二定时具有高增益来在第一定时中获得期望值。 在乘法数模转换器和具有相同数字转换器的流水线模拟转换器中,采样/保持部分(110)接收模拟信号。 采样/保持部分通过执行采样和保持计算产生模拟输入信号。 舞台单元(120)接收模拟输入信号,舞台部分输出由1.5位或2位组成的数字级输出功率信号。 舞台部分被分为包括乘法数模转换器的第一级和不包括乘法数模转换器的第二级(122b)。
    • 4. 发明公开
    • 연속 시간 시그마 델타 아날로그-디지털 변환기를 위한효율적인 루프 필터
    • 用于连续时间的有效环路滤波器将数字转换器模拟到数字转换器
    • KR1020090027416A
    • 2009-03-17
    • KR1020070092618
    • 2007-09-12
    • 지씨티 세미컨덕터 인코포레이티드재단법인서울대학교산학협력재단
    • 이희범김수환정덕균
    • H03M3/02
    • H03M3/494H03M1/12H03M3/394H03M2201/61H03M2201/646
    • A loop filter for a continuous time sigma delta analog to digital converter is provided to improve a NTF(Noise Transfer Function) property of a continuous time sigma delta analog to digital converter by using a sallen and key filter element. A loop filter includes an input terminal(1110) and an analog active filter(1120). An input signal(X2(t)) is inputted in the input terminal, and indicates at least a part of a digital output signal(y(n)) outputted from a sigma delta analog to digital converter. The analog active filter is connected to the input terminal, and includes M active devices(1122, 1124, 1126) and an output terminal(1128). M active devices provide a power gain. An output signal(I5(t)) is outputted from the output terminal, and indicates a total signal outputted from M active devices. The analog active filter performs N(N>M) integration.
    • 提供了一种用于连续时间Σ-Δ模数转换器的环路滤波器,以通过使用sallen和键滤波器元件来提高连续时间Σ-Δ模数转换器的NTF(噪声传递函数)特性。 环路滤波器包括输入端子(1110)和模拟有源滤波器(1120)。 输入信号(X2(t))被输入到输入端子,并且指示从Σ-Δ模数转换器输出的数字输出信号(y(n))的至少一部分。 模拟有源滤波器连接到输入端,并且包括M个有源器件(1122,1124,1126)和一个输出端子(1128)。 M个有源器件提供功率增益。 从输出端输出输出信号(I5(t)),表示从M个有源装置输出的总信号。 模拟有源滤波器进行N(N> M)整合。
    • 7. 发明公开
    • 신호 변환기 및 신호 변환 방법
    • 信号转换器和信号转换方法
    • KR1020080102561A
    • 2008-11-26
    • KR1020070049166
    • 2007-05-21
    • 삼성전자주식회사재단법인서울대학교산학협력재단
    • 김수환양한우종관
    • H03M1/12
    • H03M1/361H03M1/002H03M2201/1172H03M2201/2216H03M2201/93
    • A signal converter and a method for converting a signal reduce power consumption and a layout area by applying a sharing technique and a switching technique together. A signal converter(100) includes a first amplifier always maintaining the active state, and a third amplifier maintaining the active state in a first phase and a second amplifier maintaining the active state in a second phase. While a plurality of first capacitors(C1) sample the input signal in the first phase, the serially connected first amplifier and the third amplifier amplify the voltage generated by the first voltage set. While a plurality of second capacitors(C2) sample the output voltage of the second amplifier in the second phase, the serially connected first amplifier and the second amplifier amplify the voltage generated by the second voltage set.
    • 信号转换器和用于转换信号的方法通过共享技术和切换技术共同地降低功耗和布局面积。 信号转换器(100)包括总是维持有效状态的第一放大器和保持第一相位中的有效状态的第三放大器和保持第二阶段的激活状态的第二放大器。 当多个第一电容器(C1)在第一相中对输入信号进行采样时,串联的第一放大器和第三放大器放大由第一电压组产生的电压。 当多个第二电容器(C2)在第二相中对第二放大器的输出电压进行采样时,串联的第一放大器和第二放大器放大由第二电压组产生的电压。