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Altera_Forum's avatar
Altera_Forum
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16 years ago

100KHz 16bit PWM generation -- PLL manipulation?

I would like to replace my TI Picccolo with an FPGA. The one major thing that the Piccolo has is the ability to generate a PWM signal with a resolution of 150 ps (yes, pico seconds), thus allo...
Altera_Forum's avatar
Altera_Forum
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16 years ago

You should be able to fine-shift a pulse edge utilizing PLL dynamic phase shift capability, achieving the said resolution (1/8 of VCO period). As long as you don't need other high performance features, it should work also with Cyclone III.

Interesting points are intended update rate and number of parallel channels. I wonder however, if a fractional PWM modulator design can't achieve the same resolution with less effort?