PDA

View Full Version : Need help with Digital potentiometers



dinar
03-26-2009, 11:42 AM
I am working on a circuit where I am trying to control the reference voltage to two different Op AMPs using digital potentiometer [through Micro controller].
One needs GND and +10 v [variable] and the other has GND- -10v [variable].
Please help me choose the pots for this volt value.I can not seam to understand the max voltage this devices can handle. and also do they handle negative voltage. I know that there are some that can handle +-15 volts , will that one be able to handle voltage with reference to GND? individually. The component in question is AD5290. Is there any other which can be used?