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Multi stage parallel connecting weighted resistor decoding network has the properties of simple structure and easy analysis. This paper gives out the weighted resistor decoding networks of normal DAC and BCD code DAC, works out the universal formulas of connecting resistors, and simulates the circuit with EWB. This method has some reference value to design weighted resistor DAC. 多级并接型权电阻解码网络结构简单 ,分析方便。文章给出了普通的和 BCD码多级并接型权电阻解码网络 ,推导出了各级与运放的连接电阻的通用公式 ,并用 EW B软件进行了电路模拟。这种方法对自行设计权电阻 DA C有一定的参考价值 |
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