数模混合信号集成电路测试系统的同步策略

Synchronous Strategy of Digital and Analog Mixed-Signal IC Test System

介绍了数字同步的触发类型,给出了标准总线和非标准总线条件下的同步触发方案.对数模混合信号集成电路测试系统的同步、测量仪器内部时钟周期与数字周期的同步、采样频率与输入信号频率的同步进行了分析,并给出了相关参数的约束关系.提出了解决数模混合信号集成电路测试系统同步问题的有效方案,使数模混合信号集成电路测试系统准确、稳定和可靠.

Based on the synchronization analysis of digital and analog mixed-signal IC test system, the type of digital synchronized trigger and the synchronous trigger methods under the standard bus condition or the nonstandard bus condition are introduced. From the analysis of the synchronization of measuring instrument internal clock cycle, the digital cycle and the synchronization of sampling frequency and the input signal frequency, the constraint relationship of the relative parameters is put forward. At last, an effective solution to the synchronization of digital and analog mixed signal IC test system is found so that the test system works accurately, stably and reliably.