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Variable frequency Sine Wave generation using DSPIC

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sonenarayanan

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I need to generate a sine wave whose frequency can be controlled from say, 1hz to 20Khz (Analog output of DSPIC) corresponding to 0-10V, Analog input. and also wanted to know if ampiltude control is possible similarly. Detail Circuit dwg and source code required.
 

Hi sonenarayanan,

I don't know how to do this using DSPIC. But can help if you prefer doing this using a DDS (Direct Digital Synthesis) chip. Checkout some DDS chips from Analog Devices. They can be very easily interfaced to a controller and the frequency is crystal controlled.
 

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