Abstract
The system completes the design of signal generator by using the technology of the Direct Digital Synthesizer (DDS). The DSP6713 designed as a key device, realizes outputting triangle wave and sine wave. The digital to analog (D/A) converter circuit is composed of AD768 and LTC1597, which helps improve the speed of converting and modulate the range of the output voltage by Digital Signal Processor (DSP), comparing with using one chip of D/A and proportional amplifier. In addition, bus topology makes extending system functions become easy. The system can be widely used in such field as communication, automatic control and instruments.
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