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数字控制的正弦波发生器

资料介绍
图1电路的生产使用精确的可变频率正弦波波作为一个通用的参考信号。它包括一个8阶椭圆形,开关电容低通滤波器器(IC3 )微处理器IC2产生的100kHz方波时钟。 (任何其他方便的方波源也是可以接受的。 )微控制器的时钟由10MHz的振荡器模块。一个电压监控器( IC1 ) ,确保在电源故障时的正确操作。 IC3的设置在1/100的时钟频率,滤波器的截止频率。

Maxim > App Notes > Automotive Filter Circuits (Analog) Signal Generation Circuits
Keywords: digitally controlled sine-wave generator, sine wave, circuits, IC3 Jun 27, 2003

APPLICATION NOTE 2081
Digitally Controlled Sine-Wave Generator


A similar version of this article appeared in the May 15, 2003 issue of EDN magazine.

The circuit of Figure 1 produces an accurate variable-frequency sine wave for use as a general-purpose reference signal. It
includes an 8th-order elliptic, switched-capacitor lowpass filter (IC3) that is clocked with a 100kHz square wave generated by
microcontroller IC2. (Any other convenient squarewave source is also acceptable.) The microcontroller is clocked by a 10MHz
oscillator module. A vo……
标签:Maximdigitallycontrolledsine-wavegeneratorsinewavecircuitsIC3
数字控制的正弦波发生器
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