I go back to decoupling. Add a 0.1uF ceramic cap across the power and ground as close to the DS1820B as possible.
You might also try a series inductor in the power line as well.
I go back to decoupling. Add a 0.1uF ceramic cap across the power and ground as close to the DS1820B as possible.
You might also try a series inductor in the power line as well.