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CH5081系CMOS集成电路,它内含一个数字相位比较器和一个单独的反相器,电路如图1所示。(CH5081的工作原理可参阅本刊1990年第6期有关文章)。 CH5081适用于通信、仪器仪表及自动控制等诸多领域的应用,本文介绍三个实例。一、相位计 CH5081具有对不同频率的数字信号进行相位比较的功能。当两路脉冲信号分别从R和S端输入时,CH5081内含的数字相位比较器就对输入脉冲上升沿的相位进行比较,并从脚3和脚4输出比较的结果。在两路输入信号的相位超前、滞后和一致时,输出信号
CH5081 Department of CMOS integrated circuits, which contains a digital phase comparator and a separate inverter, the circuit shown in Figure 1. (The working principle of CH5081 can refer to the publication of the sixth issue of 1990 related articles). CH5081 is suitable for many fields such as communication, instrumentation and automatic control and so on, this article introduces three examples. First, the phase meter CH5081 with different frequency of the digital signal phase comparison function. When two pulse signals are input from R and S respectively, the digital phase comparator included in CH5081 compares the rising edge of the input pulse, and the result of comparison is output from pin 3 and pin 4. In the two input signal phase lead, lag and consistent, the output signal