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    • 6. 发明授权
    • Variable capacitor based on frequency of operation
    • 基于操作频率的可变电容器
    • US5805016A
    • 1998-09-08
    • US812632
    • 1997-03-07
    • Chongjun Jiang
    • Chongjun Jiang
    • G05F3/24G05F3/16
    • G05F3/24
    • A variable capacitor for integrated circuits used as a decoupling capacitor that operates at both low and high frequencies is disclosed. Based upon a programmable input signal, the decoupling capacitance of the circuit varies within a specific range providing a vehicle for testing decoupling capacitance requirements of new integrated circuits and functions and new silicon processes. The programmable input signal switches a transistor from the saturated region of operation to the unsaturated region of operation, varying the decoupling capacitance of the transistor. By providing circuitry to control the switching of the transistor, the circuit operates at both low and high frequencies, reducing the negative impacts of transistor channel resistance during high frequency operation.
    • 公开了一种用于集成电路的可变电容器,用于在低频和高频下工作的去耦电容器。 基于可编程输入信号,电路的去耦电容在特定范围内变化,提供用于测试新集成电路和功能以及新的硅工艺的去耦电容要求的车辆。 可编程输入信号将晶体管从饱和工作区切换到不饱和工作区,改变晶体管的去耦电容。 通过提供控制晶体管开关的电路,电路在低频和高频下工作,减少了高频操作期间晶体管沟道电阻的负面影响。