本文评述了一些常见的锁定鉴测技术,对选择最佳设计方法提供初步看法。采用镇相环的许多电路通常需要有环路确实锁定的指示和鉴测电路。这样,对设计师来说,在设计中增加了像门和闩这样的电路。因此,目前已经出现了各种各样的鉴测电路,其中有一些在专题 This article reviews some of the common lock detection techniques that provide initial insights into choosing the best design methodology. Many circuits that employ phase-locked loops typically require an indication and sense circuitry that the loop does lock. In this way, for the designer, in the design adds doors and latch such circuit. As a result, a variety of detection circuits have emerged, some of which are on the topic