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    • 9. 发明公开
    • SC-VERSTÄRKERSCHALTUNG
    • EP3224944A1
    • 2017-10-04
    • EP15797692.9
    • 2015-11-23
    • Elmos Semiconductor Aktiengesellschaft
    • RAEHSE, NorbertARNOLD, Rüdiger
    • H03F1/56H03F3/00H03F3/45G11C27/02
    • H03F3/005G11C27/026H03F1/56H03F3/45
    • The invention relates to an SC amplifier circuit (10) which is used to amplify an input voltage of a measurement signal source present at an input by an amplification factor and to output the amplified input voltage at an output during a switching cycle, which comprises at least one charging interval for charging an input capacitor (C
      s ) and at least one discharging interval for discharging the input capacitor (C
      s ). The SC amplifier circuit has a circuit input connection (12) for the input voltage to be amplified, which input voltage is supplied by the measurement signal source, and has an amplifier (22) having an amplifier input connection (20) and an amplifier output connection. The input capacitor (C
      s ) is connected to the amplifier input connection (20) and can be connected to the circuit input connection (12) in the discharging interval and decoupled from the circuit input connection in the discharging interval. Furthermore, the SC amplifier circuit (10) has a feedback network (26), which is connected between the amplifier output connection (24) and the amplifier input connection (20), and a recharging source (28) for providing a charging current for charging the input capacitor (C
      s ), wherein the recharging source (28) charges the input capacitor (C
      s ) in the charging interval and is deactivated with regard to charging of the input capacitor (C
      s ) in the discharging interval.
    • 本发明涉及一种SC放大器电路(10),其用于通过放大因子来放大存在于输入端处的测量信号源的输入电压并在开关周期期间输出放大的输入电压,其包括在 至少一个用于对输入电容器(Cs)充电的充电间隔以及用于对输入电容器(Cs)进行放电的至少一个放电间隔。 SC放大器电路具有用于待放大的输入电压的电路输入连接(12),该输入电压由测量信号源提供,并且具有放大器(22),该放大器具有放大器输入连接(20)和放大器输出 连接。 输入电容器(Cs)连接到放大器输入连接(20)并且可以在放电间隔中连接到电路输入连接(12)并且在放电间隔中与电路输入连接解耦。 此外,SC放大器电路(10)具有连接在放大器输出连接(24)和放大器输入连接(20)之间的反馈网络(26)和用于提供充电电流的充电源(28) 对输入电容器(Cs)充电,其中,充电源(28)在充电间隔中对输入电容器(Cs)进行充电,并且在放电间隔期间关于输入电容器(Cs)的充电被停用。