Hi
I needed digital driver that can give me sin wave using I2C commands.
I used drv201 and a mux ts3a44159 with the mux I switch the legs of the DRV output when the sin is negative and this is how I get full sin between (-1 to 1 V).
I want to sample the output from the DRV 201.
the problem is that I can only measure positive difference (negative will be 0) in my a/d .
I wanted to use an unit op amp to calculate the difference between the drv+mux output and to add a bias to the result so I would be able to sample it (I want to see the output sin with bias).
how can I do it in the easiest way? (I cant add bias to one of the coil sided because I will force this voltage on one of the coils legs and this will change the output)
thanks in advanced,