audioguru Posted November 16, 2006 Report Share Posted November 16, 2006 If i use maxim's 2.5V shunt voltage reference instead of D8 then 5V should be obtained on the outout of U1 which doesn't require any voltage divider.What do u think..??? ???I thought about using a 78L05 to replace the zener diode and the opamp, then also power the digital pots from it. You could add a trimpot in the gain-determining parts for calibration.Is there any need of finer adjustment pot(1K) if digital pot is used..??? ???Maybe there are enough steps and the resolution is good enough for you. You won't be able to smoothly sweep the voltage up or down. As I mentioned above, a trimpot is needed for calibration.Also i want to display the max output Quote Link to comment Share on other sites More sharing options...
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