 In equipment which has a microprocessor, FPGA or other functional logic which can store settings and reload them to the "potentiometer" every time the equipment is powered up, a multiplying DAC can be used in place of a digipot, and this can offer higher setting resolution, less drift with temperature, and more operational flexibility.A membrane potentiometer uses a conductive membrane that is deformed by a sliding element to contact a resistor voltage divider.Linearity can range from 0.50% to 5% depending on the material, design and manufacturing process.