MAX5484 Datasheet | Maxim Integrated

19-3708; Rev 3; 4/07 .. 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers General Description The MAX5481- MAX5484 10-bit (1024-tap) nonvolatile, linear-taper, programmable voltage-dividers and variable resistors perform the function of a mechanical potentiometer, but replace the mechanics with a pinconfigurable 3-wire serial SPI™-patible interface or up/down digital interface. The MAX5481/MAX5482 are 3-terminal voltage-dividers and the MAX5483/MAX5484 are 2-terminal variable resistors. The MAX5481- MAX5484 feature an internal, nonvolatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for initialization during power-up. The 3-wire SPI-patible serial interface allows munication at data rates up to 7MHz. A pin-selectable up/down digital interface is also available. The MAX5481- MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-toend resistance values are available (10kΩ and 50kΩ) in a voltage-divider or a variable-resistor configuration (see the Selector Guide). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric, making these devices ideal for applications requiring low-temperature-coefficient voltage-dividers, such as low-drift, programmable gain-amplifiers. The MAX5481- MAX5484 operate with either a +2.7V to +5.25V single power supply or ±2.5V dual power supplies. These devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.0µA (max) of standby supply current. The MAX5481- MAX5484 are available in a space-saving (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP package and are specified over the extended (-40°C to +85°C) temperature range. Features - 1024 Tap Positions - Power-On Recall of Wiper Position from Nonvolatile Memory - 16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin TSSOP Package - 35ppm/°C End-to-End Resistance Temperature Coefficient - 5ppm/°C Ratiometric...