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Hi to all,
i want to generate high precision,low frequencies sinusoidal signals (50,80 and 180 hz) trough my altera cyclone4 (vhdl code) with the PWM technique.
I've started to do some tests, in particular i've used the NCO megafunction, but the problem is that the only way to generate high precision 50hz signal is to set input clock frequency as a power of 2 (for example 65.536Khz).
Is there any way to overcome this issue?
Is there another more interesting techniques to generate sinusoidal samples for high precision signals?
Let me know, thanks...
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you can use power of 2 nco for accurate sinusoid of any value. The resolution of phase accumulator can be increased. The frequency will be correct but phase drift may occur.
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