I am looking for an IC which I can easily interface with the arduino to get a PWM (rectangle) signal with variable frequency and duty cycle.
preferable 1 Hz to 20 MHz and a duty cycle which can be changed by 0.1%
I will manage if the frequency range is lower but I need at leat 1khz to 5 Mhz frequency steps preferable in 1Hz increments or less.
In a perfect world the output voltage of the signal would be 5V.
The AD9833 would be perfect frequency wise but as far as i know only sqare wave signals are possible (triangle and sine aswell).
Has anyone an idea what chip i could use? Or is it possible to use the AD9833?