Hey,
I'm implementing a variable gain amplifier (+/-3V) and im currently using an Analog Devices AD5280 digital potentiometer. works quite well however it's size is unacceptable for our implant
There are some really tiny potentiometers out there (eg Maxim MAX5128, 2mm squared) but they are rated for 5.25 rail rail. Similiarly any other small one I have found is designed for max of +/- 2.5V, and rated at 5.25.
Im wondering if anyone might have an idea of some suitable device, small as possible preferable QFN package or similiar. Resistances of anywhere 10-100 k in a min of 128 steps is desirable
Thanks