Based on the pre-amplifier circuit board of the data acquisition &control; system of the industrial CT, this paper explains how to use CPLD to control the timing of DDC112.

• 摘要结合工业CT的数据采集控制系统的前置放大器电路，分析了利用CPLD对电流积分型前放芯片DDC112进行逻辑控制的方法。