Description

The MAX5427/MAX5428/MAX5429 linear-taper digitalpotentiometers function as mechanical potentiometers,but replace the mechanics with a simple 2-wire digitalinterface. These digital potentiometers are unique in thatthey have an optional one-time programmable featurethat either sets the wiper's power-on reset (POR) positionto a user-defined value, or the wiper can be set andthe interface disabled to prevent further adjustment.The MAX5427 has an end-to-end resistance of 100kΩ,the MAX5428 a resistance of 50kΩ, and the MAX5429 aresistance of 10kΩ. All these devices have 32 wiperpositions, operate from a single 2.7V to 5.5V supply, anduse less than 1.5µA (max) static supply current.The MAX5427/MAX5428/MAX5429 are available in8-pin thin QFN and µMAX® packages. Each device isguaranteed over the extended temperature range of-40°C to +85°C.ApplicationsMechanical Potentiometer ReplacementsProducts Using One-Time Factory Calibration