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随着社会和科学技术的发展,数字系统已经是21世纪不可或缺的重要部分,人类对数字技术的依赖日趋加深。与模拟电路相比,数字电路具有很多显著的优点,但是数字系统只能对输入的数字信号进行处理,其输出信号也是数字信号。然而在自然界中,需要处理的信号都是模拟信号,而所有这些模拟信号的数字化过程以及由数字化到模拟信号的回归,都必须经过“数据转换器(Data Converter)”这个魔法盒的点化,才能跟另一边的世界取得沟通。而DAC(数模转换器)是一种将数字信号转换为模拟信号的混合信号处理电路。现代先进的电子系统大多都应用DAC以改善数字处理技术的性能,针对高速、高分辨率DAC的研究是非常有必要的。
With the development of society and science and technology, the digital system has become an indispensable part of the 21st century. The dependence of mankind on digital technology is deepening. Compared with analog circuits, digital circuits have many significant advantages, but the digital system can only handle the input digital signal, the output signal is also a digital signal. In nature, however, the signals that need to be processed are analog signals, and the digitization of all these analog signals and the return from digitization to analogue signals must go past the “Data Converter” To communicate with the other side of the world. The DAC (Digital to Analog Converter) is a digital signal into an analog signal mixed signal processing circuit. Most modern electronic systems use DAC to improve the performance of digital processing technology, and it is very necessary to research high-speed and high-resolution DAC.