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Delay locked loop design with switch for loop filter capacitance leakage current control
Delay locked loop design with switch for loop filter capacitance leakage current control
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机译:带开关的延迟锁定环路设计,用于环路滤波器电容泄漏电流控制
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摘要
A delay locked loop design that uses a switch operatively connected to a loop filter capacitor to control a leakage current of the loop filter capacitor is provided. By positioning a switch in series with the loop filter capacitor, the leakage current of the loop filter capacitor may be controlled by switching the switch on when a charge pump of the delay locked loop is on and switching the switch off when the charge pump is off, thereby cumulatively reducing the leakage current of the loop filter capacitor throughput the operation of the delay locked loop. Control and reduction of the loop filter capacitor leakage current leads to more reliable and stable delay locked loop behavior.
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