本文详细介绍了MOTOROLA公司生产的九种大规模集成电路锁们环频率合成器的功能、性能及应用。这个系列电路的集成度较高,功能较全,在编程上既有并行数据输入、串行数据输入、也有总线选址输入。前置分频方式有用单模前置分频的,也有用双模吞脉冲技术的,所介绍的电路品种具有一定代表性。本文还介绍了这些电路的应用实例,以供使用者参考。 This article details the functions, performance, and applications of nine large-scale integrated circuit lock loop frequency synthesizers produced by MOTOROLA. This series of circuits with higher integration, more comprehensive functions, in the programming of both parallel data input, serial data input, but also the bus location input. Pre-division method useful single-mode pre-division, but also useful dual-mode swallowing pulse technology, the introduction of the circuit varieties have a certain representation. This article also describes the application of these circuits, for reference.