Sine Wave Generator Circuit

Posted on Jul 28, 2012

In this circuit, a square wave is filtered by a high-order low-pass filter so that a -3-dB frequency will eliminate most harmonics of the waveform. As a result, the filter outputs a fundamental sine wave. This method is applied to generate a sine wave by using a switched- capacitor filter (MAX292) (see the figure). This circuit offers wide frequency range (0.1 Hz to 25 kHz),

Sine Wave Generator Circuit
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low distortion, and constant output amplitude throughout the whole frequency range.

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