I have the EVAL-AD7293SDZ board which is the evaluation board for amplifier current controller.
The eval board itself provides internally 5V for the drain voltage, I want to externally supply 28V .
But my question arises here! in the datasheet (page 29) this is written:
" FOR DRAIN VOLTAGES HIGHER THAN 20V IT IS RECOMMENDED
TO TIE PAVDD TO VDD AND SCALE THE CONTROL SIGNAL EXTERNALLY. "
what does it mean by tie up?? and what does scale the control signal externally implies??
I would appreciate if anyone can guide me.