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    • 4. 发明公开
    • 고조파 제거기능을 갖는 전류 샘플링 믹서
    • 具有谐波抑制的电流采样混频器
    • KR1020090105372A
    • 2009-10-07
    • KR1020080030793
    • 2008-04-02
    • 삼성전기주식회사
    • 박경석김남흥김규석
    • H03D7/18
    • H03M1/804H03D7/14H03D2200/006H03D2200/0074H03D2200/0086
    • PURPOSE: A current sampling mixer with a harmonic rejection function is provided to obtain the harmonic rejection function by selecting and combining capacitors with the weight by changing the current sampler structure with the capacitors. CONSTITUTION: A first current source is connected to a first input terminal and supplies the positive current of an input signal. A second current source is connected to a second input terminal and supplies the negative current of an input signal. A charge selection unit(110) includes a plurality of charge switches. The charge switches are successively on for a charge time and are off for the sum output time. A capacitor circuit unit(120) includes a plurality of capacitor pairs connected to the charge switches. The capacitor pair includes a front capacitor and a rear capacitor. A weight selection unit(130) includes the weight switches. The weight switches are on for the charging time and are off for the sum output time to apply the weight. A filtering circuit(140) includes a plurality of output switches. The output switches are on for the sum output.
    • 目的:提供具有谐波抑制功能的电流采样混频器,通过用电容器改变电流采样器结构,通过选择和组合电容器来获得谐波抑制功能。 构成:第一电流源连接到第一输入端并提供输入信号的正电流。 第二电流源连接到第二输入端并提供输入信号的负电流。 电荷选择单元(110)包括多个充电开关。 充电开关连续导通充电时间,并在总和输出时间关闭。 电容器电路单元(120)包括连接到充电开关的多个电容器对。 电容器对包括前电容器和后电容器。 重量选择单元(130)包括重量开关。 重量开关打开充电时间,关闭总和输出时间以应用重量。 滤波电路(140)包括多个输出开关。 输出开关为和输出。
    • 10. 发明公开
    • D/A 변환회로, 표시장치, 반도체장치, 및 반도체장치 구동방법
    • D / A转换器电路和半导体器件
    • KR1020020040561A
    • 2002-05-30
    • KR1020010071713
    • 2001-11-19
    • 가부시키가이샤 한도오따이 에네루기 켄큐쇼
    • 타나카유키오아자미무네히로
    • H03M1/76
    • H03M1/68H03M1/765H03M1/804
    • PURPOSE: A D/A converter circuit and semiconductor device is provided to efficiently improve properties in a limited surface area, even if the number of digital signal bits is increased at high speed operation. CONSTITUTION: The DAC converts an n-bit digital signal into an analog signal by converting the lower m bits of the digital signal in a lower bit correspondence resistance divided DAC(R-DAC)(101) into an analog signal corresponding to the lower bits. Further, the output wiring(102) is connected to a reset electric power source through a reset switch(SWR). The electric potential(VR) of the reset electric power source and the electric potential(VA) of the electric power source A may be the same, and they also may be different. Further, the electric potential(VR) of the reset electric power source and the electric potential(VB) of the electric power source(B) may be the same, and they also may be different. The reset switch(SWR) controls switching in accordance with a reset signal(Res).
    • 目的:提供D / A转换器电路和半导体器件,以便有效地提高有限表面积的性能,即使在高速运行时数字信号位的数量增加。 构成:DAC通过将低位对应电阻分压DAC(R-DAC)(101)中的数字信号的较低m位转换为对应于较低位的模拟信号,将n位数字信号转换为模拟信号 。 此外,输出布线(102)通过复位开关(SWR)连接到复位电源。 复位电源的电位(VR)和电源A的电位(VA)可以相同,也可以不同。 此外,复位电源的电位(VR)和电源(B)的电位(VB)可以相同,也可以不同。 复位开关(SWR)根据复位信号(Res)控制切换。