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    • 6. 发明申请
    • DUTY CYCLE DETECTION CIRCUIT AND DUTY CYCLE CORRECTION CIRCUIT INCLUDING THE SAME
    • 占空比检测电路和占空比校正电路,包括它们
    • US20160226476A1
    • 2016-08-04
    • US14793411
    • 2015-07-07
    • SK hynix Inc.
    • Hae-Rang CHOIDae-Han KWONYong-Ju KIM
    • H03K9/08
    • H03K9/08
    • A duty cycle detection circuit includes a reset unit suitable for resetting a first capacitor and a second capacitor based on a reset signal, a first charging/discharging unit suitable for charging the first capacitor while a clock is in a first level and discharging the first capacitor while the clock is in a second level, a second charging/discharging unit suitable for charging the second capacitor while the clock is in the second level and discharging the second capacitor while the clock is in the first level, and a differential amplifier suitable for amplifying a voltage difference between the first capacitor and the second capacitor based on an amplification enable signal and generating a detection signal as a result of the amplification.
    • 占空比检测电路包括:复位单元,其适于基于复位信号复位第一电容器和第二电容器;第一充电/放电单元,适于在时钟处于第一电平期间对第一电容器充电,并且将第一电容器 当时钟处于第二电平时,第二充电/放电单元适于在时钟处于第二电平期间对第二电容器充电并且在时钟处于第一电平时对第二电容器放电,以及适于放大的差分放大器 基于放大使能信号,第一电容器和第二电容器之间的电压差,并且作为放大的结果产生检测信号。