High school trigonometry combined with four-quadrant multipliers can be exploited to yield sinusoidal frequency doublers. Nothing non-linear is involved, which means no possibly strident filtering ...

Many applications require a low-distortion sine wave which tracks the clock from a microprocessor. For most designs, this involves a digital/analog converter (DAC), sine table in read-only memory (ROM ...

This file type includes high resolution graphics and schematics. Although quite a few direct digital synthesis (DDS) ICs can generate high-frequency sine waves, their complexity excludes them from ...