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    • 2. 发明授权
    • DC 오프셋 제거 장치
    • 直流偏移消除装置
    • KR100763845B1
    • 2007-10-05
    • KR1020060037354
    • 2006-04-25
    • 삼성전자주식회사
    • 장지수강상훈
    • H04B1/06H04B1/10
    • H03F3/45968H03F3/45986H03F2200/453H03F2203/45138H03F2203/45212
    • A DC(Direct Current) offset cancellation apparatus is provided to remove effectively DC offset without the deterioration of noise figure, thereby improving the performance of a system having the DC offset cancellation apparatus. A DC(Direct Current) offset cancellation apparatus comprises the followings: a main amplifier(40) including an inversion input stage for receiving a first signal and non-inversion input stage for receiving a second signal; a replica amplifier(41) including the inversion input stage for receiving the first signal and the non-inversion input stage for receiving the second signal; a switch(42) for switching signals inputted to the replica amplifier in response to a control signal; and a storing unit(43), which is connected to the input stage of replica amplifier, for maintaining DC value for a predetermined time period when the switch is opened.
    • 提供DC(直流)偏移消除装置,以有效地去除DC偏移而不降低噪声系数,从而提高具有DC偏移消除装置的系统的性能。 DC(直流)偏移消除装置包括:主放大器(40),包括用于接收第一信号的反相输入级和用于接收第二信号的非反相输入级; 复制放大器(41),包括用于接收第一信号的反相输入级和用于接收第二信号的非反相输入级; 用于响应于控制信号切换输入到复制放大器的信号的开关(42); 以及存储单元(43),其连接到复制放大器的输入级,用于在开关断开时保持DC值达预定时间段。
    • 5. 发明公开
    • 비교기 회로 및 신호 비교 방법
    • 比较电路和比较信号的方法
    • KR1020140083374A
    • 2014-07-04
    • KR1020120153051
    • 2012-12-26
    • 에스케이하이닉스 주식회사
    • 김기한
    • H03M1/12H03F3/45
    • H03K5/2481H03F3/45183H03F3/45475H03F3/45986H03F2203/45674H03M1/1023H03M1/12
    • The present technology is used to compensate an offset existing in a comparison unit while a comparison operation is continuously being performed. A comparator circuit according to the present invention includes: a first comparison unit which compares a first input signal and a second input signal to generate a first comparison signal; a second comparison unit which compensates the offset and compares the first input signal and the second input signal to generate the second comparison signal; and an offset compensation amount adjusting unit which adjusts the amount of the offset compensation made by the second comparison unit when the value of the first input signal and the value of the second input signal are different.
    • 当连续执行比较操作时,本技术用于补偿存在于比较单元中的偏移。 根据本发明的比较器电路包括:第一比较单元,其比较第一输入信号和第二输入信号以产生第一比较信号; 补偿偏移并比较第一输入信号和第二输入信号以产生第二比较信号的第二比较单元; 以及偏移补偿量调整单元,当所述第一输入信号的值和所述第二输入信号的值不同时,调整由所述第二比较单元进行的偏移补偿的量。
    • 6. 发明公开
    • 캐패시터 바이어스 회복 방법
    • 恢复电容偏置的方法
    • KR1020020009452A
    • 2002-02-01
    • KR1020010044005
    • 2001-07-21
    • 텍사스 인스트루먼츠 인코포레이티드
    • 만즈레카아시스티.노다제임스에메슨파울엠.불러드워쓰브라이언이.
    • G11B20/02
    • G11B5/012G11B19/04G11B2005/0013G11B2005/0016G11B2005/0018H03F3/45973H03F3/45986
    • PURPOSE: A capacitor bias recovery method is provided to improve the bias response time for preamplifier circuits using noise reduction capacitors with connecting a quick recovery circuit to the node of the noise reducing capacitor. CONSTITUTION: A system for recovering capacitor bias uses a quick recovery circuit(210) electrically connected to a capacitive node(235) of a preamplifier circuit(214). The quick recovery circuit comprises a gain amplifier(218) with the resistive input and a controlled current source(225). The controlled current source corresponds to adjustment in the controlled current source of the preamplifier. The controlled current source is electrically connected to the resistive input of the gain amplifier. The gain amplifier is selectively switched to operatively connect the output to the capacitive node of the preamplifier circuit. The system improves the bias response time for preamplifier circuits utilizing noise reduction capacitors.
    • 目的:提供电容器偏置恢复方法,以改善使用降噪电容器的前置放大器电路的偏置响应时间,该电路将快速恢复电路连接到降噪电容器的节点。 构成:用于恢复电容器偏压的系统使用电连接到前置放大器电路(214)的电容性节点(235)的快速恢复电路(210)。 快速恢复电路包括具有电阻输入的增益放大器(218)和受控电流源(225)。 受控电流源对应于前置放大器的受控电流源的调整。 受控电流源电连接到增益放大器的电阻输入。 增益放大器被选择性地切换以将输出可操作地连接到前置放大器电路的电容性节点。 该系统改善了利用降噪电容器的前置放大器电路的偏置响应时间。