人们可利用在 DAG 的数字输入端输入一个二进制字,将令在其输出端产生一个正比于这个二进制字的模拟量输出这一事实,构成波形发生器。图1是一个产生幅值和频率可变的三角形波和锯齿形波的简单线路。REF-01输出的10.00伏基准电压和串联的5KΩ电位器用于调节输出波形的幅值,而其极性则受控于运算放大器的输出。 One can make use of the fact that a binary word is input to the digital input of the DAG to produce an analog output proportional to the binary word at its output to form a waveform generator. Figure 1 is a simple line that produces triangular and saw-tooth waves with variable amplitude and frequency. The REF-01’s 10.00 volt reference and the cascaded 5KΩ potentiometer adjust the amplitude of the output waveform while its polarity is controlled by the op amp’s output.