数字可调电压的引用是在许多应用程序非常有用。例如，可以使用需要的绝对精度时细调参考电压或调整到最大限度模拟向数字转换的动态范围的模拟输入信号的全面的电压范围相匹配的参考电压。您可以轻松创建一个可调节电压参考结合数字电位器 (罐)。使用数字锅的数字变量方面控制灵活和有用的电路中参考结果调整电压。此处提供了三种基本电路拓扑。第一次达到粗的调整宽电压范围，第二种罚款一个窄的电压范围，和第三个调整细宽电压范围内的调整。这些简单的电路可以直接使用，或可以构成更复杂的控制系统的基础。Maxim > App Notes > DIGITAL POTENTIOMETERS Keywords: Digitally Adjustable Voltage References Jul 01, 2001 APPLICATION NOTE 629 Digitally Adjustable Voltage References A digitally adjustable voltage reference is useful in many applications. For instance, it can be used to finely tune the reference voltage when absolute accuracy is required or to adjust the reference voltage to match the full- scale voltage range of an analog-input signal to maximize the dynamic range of an analog-to-digital conversion. You can easily create one by combining an adjustable voltage reference with a digital potentiometer (pot). Using the digitally variable aspect of the digital pot to control the adjustment voltage on the reference results in a flexible and……