Hello,
I am planning to buy Arduino Mega 2650. and then use a DAC to get an analog voltage at the output to drive an actuator.
My questions are:
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If I use the PWM output which is 8 bit and then use a 12 bit-DAC , will it make any sense? or should I use a 8 bit DAC only. I do not understand the 8bit/12 bit working logic of the of the arduino outputs which will act as an input to the 12bit DAC.
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The MPC49X1 has external Vref. This means my output voltage can go upto 10V if I give 5V as Vref. I am missing anything here.
aslo, does external Vref has any disadvantage over internal Vref?
Thanks and Regards,