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Papabravo said:If the duty cycle is 100% then the voltage across the capacitor C will asymptotically approach Vcc. If the corenr frequency is low enough it could take a very long time to get there.
1. A DAC may be expensive and consume board space.mcs51mc said:Why not using a standard DAC chip, Maxim has 245 different types!!
I'm absolutely sure one will meet your requirements
Check here: **broken link removed**
seveprim said:Could always make a cheap and nasty dac with the old 2r ladder design ... and give it some pins (more pins more bits) ... it is a no brainer to do and cheap too... just some resistors and some pins ... cant say its perfect but I am throwing it in the mix ....
Agree wholeheartedly with the above solutionseveprim said:Could always make a cheap and nasty dac with the old 2r ladder design ... and give it some pins (more pins more bits) ... it is a no brainer to do and cheap too... just some resistors and some pins ... cant say its perfect but I am throwing it in the mix ....
Pommie said:For something really cheap and nasty, you could always use the Vref output. This would give you a 4 bit (16 level) output.
Mike.