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MAX176是美国美信公司制造的12位串行A/D转换器,片内含有采样保持器,能将-5～+5V之间的模拟信号快速捕获并转换为数字信号(捕获时间为0.4μs,最长转换时间为3.5μs)。 MAX176的引脚如图1所示。VDD为+5 V电源端,AIN为模拟信号(-5～+5 V)输入端,VREF为-5 V参考电压输出端,GND为接地端,DATA为数据输出端,CLOCK(用于输出转换结果)为时钟脉冲(100kHz～4 MHz)输入端,CONVT为转换控制输入端,VSS为-12 V或-15 V电源端。
The MAX176 is a 12-bit serial A / D converter manufactured by Maxim Integrated in the US. The MAX176 contains a sample and hold device that can quickly capture and convert analog signals between -5 and +5 V into digital signals (capture time 0.4 μs, The longest conversion time is 3.5μs). The pin for the MAX176 is shown in Figure 1. VDD is the +5 V power supply, AIN is the analog signal (-5 ~ + 5 V) input, VREF is the -5 V reference voltage output, GND is the ground, DATA is the data output, CLOCK The result is a clocked (100kHz to 4MHz) input. CONVT is the change-over control input. VSS is a -12 V or -15 V power supply.