会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明专利
    • Amplifier
    • 放大器
    • JP2006157607A
    • 2006-06-15
    • JP2004346539
    • 2004-11-30
    • Texas Instr Japan Ltd日本テキサス・インスツルメンツ株式会社
    • WATANABE HIROSHI
    • H03F3/45
    • H03F3/45475H03F1/38H03F3/45179H03F2203/45116H03F2203/45136H03F2203/45138H03F2203/45248H03F2203/45511H03F2203/45536
    • PROBLEM TO BE SOLVED: To provide an amplifier capable of automatically and dynamically varying the slew rate, in matching with the changing speed or the amplitude of an input signal.
      SOLUTION: In the operational amplifier, when a voltage V
      in of the input signal is high or changes rapidly and a voltage difference |V
      out -V
      in | of the absolute value between the input signal and an output signal exceeds a setting value V
      F , the switch control circuit 22 of a constant current circuit 12 turns on a switch 20. Then an operating current amplifier circuit 16 is activated to amplify the current I
      E of a constant current source 14 by a positive-feedback loop. The slew rate SR is rapidly increased, from a reference value used thus far by the positive feedback amplification of the current I
      E , and the output voltage V
      out immediately follows the input voltage V
      in . When the voltage difference |V
      out -V
      in | that is the absolute value between the input signal and the output signal decreases within the setting value V
      F , the switch control circuit 22 turns off the switch 20, and amplification of the operating current amplifier circuit 16 is stopped.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够根据输入信号的变化速度或振幅来自动和动态地改变转换速率的放大器。

      解决方案:在运算放大器中,当输入信号的中的电压V 高或快速变化,电压差¾V输出 -V 时 输入信号和输出信号之间的绝对值的比值超过设定值V F ,恒流电路12的开关控制电路22接通开关20。 工作电流放大器电路16被激活,以通过正反馈回路放大恒流源14的电流I SB。 转换速率SR从目前使用的参考值快速增加到当前I E 的正反馈放大,输出电压V 输出紧随着输入 中的电压V 。 当在输入信号和输出信号之间的绝对值的¾的电压差¾V输出 -V 在设定值V F ,开关控制电路22关断开关20,停止工作电流放大电路16的放大。 版权所有(C)2006,JPO&NCIPI