I am a new user as I hope the community may be able to assist me. I have been looking for options of a DIP-8 Digital Potentiometer for a school electronics experiment, but the selection available seems very limited. The main requirements is that it would be dip to be hand soldered by the students and also be able to be controlled without a microcontroller. So far in all of my searches I have found the Maxim DS1804/DS1809, and the AD5220, and honestly I was looking for a lower cost solution that our school could buy a few hundred of for experiments (low budget).
Does anyone else know of any other models that may work for me?
Also I was seeing some that list as 3-wire Serial such as the Intersil X9318 which datasheet shows "The
position of the wiper element is controlled by the CS, U/D, and INC inputs. " and being new with these it seemed like this style could be controlled manually without a microcontroller, but I did not see any example schematics or circuits of this so I wanted to ask you all if that was possible.
Thanks in advance as any suggestions or comments are appreciated.