Generating High Resolution Sine wave Using PIC's PWM

Thread Starter

priyersi

Joined Feb 25, 2013
9
Hi all,

I am trying to generate sine wave using PIC18F2550's PWM and a low a pass filter. I need to generate sine waves in the range of 100- 200 Hz with a resolution of 0.5 Hz . But the maximum resolution I could get now is 4Hz. I use an 8 MHz internal oscillator. CCP1 is used for generating PWM.

Can any one suggest me a solution ?
 

Thread Starter

priyersi

Joined Feb 25, 2013
9
Thank You all for your suggestions !

Using a different PIC or adding DAC is not possible for now as I already have the circuit made on a PCB.

I will give a try to jjw's suggestion and update you.
 
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