Low value R "I/V" with the PCM1738...
...type of DAC?
Older Iout DACs were ground referenced so it was easy - but these things sit the Iouts up at half rail - which makes life a tad difficult if you want to do it KISS style.
I can see how to do it differentially - by running the R between the + and - current outputs and taking a differential signal from across them - but without using an opamp (which I hate) or a transformer (which I also hate - but not as much as opamps) it's more complex than i wany.
And you can't take the R to gnd and have the DAC survive - don't ask me how I know...
Anyone made this work simply?
Allen
...type of DAC?
Older Iout DACs were ground referenced so it was easy - but these things sit the Iouts up at half rail - which makes life a tad difficult if you want to do it KISS style.
I can see how to do it differentially - by running the R between the + and - current outputs and taking a differential signal from across them - but without using an opamp (which I hate) or a transformer (which I also hate - but not as much as opamps) it's more complex than i wany.
And you can't take the R to gnd and have the DAC survive - don't ask me how I know...
Anyone made this work simply?
Allen