Nowadays, digital to analog converter (DAC) plays a very important role in the modern digital and analog circuit and has become one of the factors, which restricts the development of the computer, communication and DSP.

• 数模转换器(Digital-to-Analog Converter,简称DAC)是现代数字和模拟电路中用途广泛的重要接口部件,目前数模转换器在某种程度上已经成为制约计算机、数字信号处理、通信等发展的主要因素,是提高各种信号处理速度及精度的关键。