《锁相环-设计、模拟、应用》（英文第5版）
【名称】：《锁相环-设计、模拟、应用》（第5版） [英文}【作者】：ROLAND E McGraw-Hill 2004年出版
【格式】：PDF
【页数】：341
【语言】：英文
【摘要或目录】：The phase-locked loop (YLL) helps keep parts of our world orderly. if we turn
on a television set, a PLL will keep heads at the top of the screen and feet at the bottom.
In color television, another PLL makes sure that green remains
green and red remains red (even if the politicians claim that the reverse is true).
A PLL is a circuit that causes a particular system to track with another one.
More precise玩a PLL is a circuit synchronizing an output signal (generated by
an oscillator) with a reference or input signal in frequency as well as in phase.
In the synchronized-often called locked-state the phase error between the
oscillator's output signal and the reference signal is zero, or remains constant.
If a phase error builds up, a control mechanism acts on the oscillator in such
a way that the phase error is again reduced to a minimum. In such a control
system the phase of the output signal is actually locked to the phase of the ref-
erence signal. This is why it is referred to as a phase-locked loop.
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