Hey All,
I have an interesting thought for improving the resolution of my I2C-DAC, and I am solicitation everyone's feedback. I have taken my LED life span project back up, and have successfully interfaced my I2C-DAC. Thanks Hippy for the insights last year, it was easier then I thought.
However, now I am not happy with the resolution I am getting, the DAC offers a resolution of 256 points across the DAC's Vdd, which in this case is ~5vdc. Unfortunately my LED driver's max Alog IN is 1.3v, which effectively takes my resolution down to ~66 points. With a lower Vdd (minimum is 2.8v) I could almost double my resolution. So my thought is, rather then add a 2.8v source to my board, why not use the DAC function on my 28x2 as a power source for the I2C-DAC by setting the fvr to ~2.8v?
Does this sound plausible, or am I just being lazy trying to solve a hardware issue with software?
Thanks,
I have an interesting thought for improving the resolution of my I2C-DAC, and I am solicitation everyone's feedback. I have taken my LED life span project back up, and have successfully interfaced my I2C-DAC. Thanks Hippy for the insights last year, it was easier then I thought.
However, now I am not happy with the resolution I am getting, the DAC offers a resolution of 256 points across the DAC's Vdd, which in this case is ~5vdc. Unfortunately my LED driver's max Alog IN is 1.3v, which effectively takes my resolution down to ~66 points. With a lower Vdd (minimum is 2.8v) I could almost double my resolution. So my thought is, rather then add a 2.8v source to my board, why not use the DAC function on my 28x2 as a power source for the I2C-DAC by setting the fvr to ~2.8v?
Does this sound plausible, or am I just being lazy trying to solve a hardware issue with software?
Thanks,