MAX5481MAX5484 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers General Description Features 1024 Tap Positions The MAX5481MAX5484 10-bit (1024-tap) nonvolatile, linear-taper, programmable voltage-dividers and vari- Power-On Recall of Wiper Position from able resistors perform the function of a mechanical Nonvolatile Memory potentiometer, but replace the mechanics with a pin- 16-Pin (3mm x 3mm x 0.8mm) TQFN or 14-Pin configurable 3-wire serial SPI-compatible interface or TSSOP Package up/down digital interface. The MAX5481/MAX5482 are 35ppm/C End-to-End Resistance Temperature 3-terminal voltage-dividers and the MAX5483/MAX5484 Coefficient are 2-terminal variable resistors. 5ppm/C Ratiometric Temperature Coefficient The MAX5481MAX5484 feature an internal, non- 10k and 50k End-to-End Resistor Values volatile, electrically erasable programmable read-only memory (EEPROM) that stores the wiper position for ini- Pin-Selectable SPI-Compatible Serial Interface or tialization during power-up. The 3-wire SPI-compatible Up/Down Digital Interface serial interface allows communication at data rates up 1A (max) Standby Current to 7MHz. A pin-selectable up/down digital interface is Single +2.7V to +5.25V Supply Operation also available. Dual 2.5V Supply Operation The MAX5481MAX5484 are ideal for applications requiring digitally controlled potentiometers. Two end-to- Pin Configurations end resistance values are available (10k and 50k) in a voltage-divider or a variable-resistor configuration (see TOP VIEW 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 9 12 11 10 requiring low-temperature-coefficient voltage-dividers, V GND 13 8 SS such as low-drift, programmable gain-amplifiers. INTERFACE V DD 14 7 N.C. The MAX5481MAX5484 operate with either a +2.7V to MAX5481* +5.25V single power supply or 2.5V dual power sup- 6 N.C. N.C. 15 MAX5482* plies. These devices consume 400A (max) of supply V SS 16 5 N.C. **EP current when writing data to the nonvolatile memory and 1.0A (max) of standby supply current. The + 1 2 3 4 MAX5481MAX5484 are available in a space-saving Functional Diagrams (3mm x 3mm), 16-pin TQFN, or a 14-pin TSSOP pack- TQFN age and are specified over the extended (-40C to *SEE FUNCTIONAL DIAGRAM +85C) temperature range. **CONNECT EXPOSED PAD TO V SS Applications Gain and Offset Low-Drift Programmable Adjustment Gain Amplifiers 12 11 10 9 LCD Contrast Adjustment Mechanical Potentiometer V SS GND 13 8 INTERFACE Replacement Pressure Sensors V DD 14 7 N.C. MAX5483 N.C. 15 6 N.C. MAX5484 Ordering Information V SS 16 5 N.C. *EP PART PIN-PACKAGE TOP MARK + 1 2 3 4 MAX5481ETE+ 16 TQFN-EP* ACP MAX5481EUD+ 14 TSSOP TQFN Note: All devices are specified over the -40C to +85C operating *CONNECT EXPOSED PAD TO V SS temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. Pin Configurations continued at end of data sheet. Pin Configurations appear at end of data sheet. *EP = Exposed pad. Functional Diagrams continued at end of data sheet. Selector Guide appears at end of data sheet. Ordering Information continued at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. SPI is a trademark of Motorola, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct 19-3708 Rev 5 4/10 at 1-888-629-4642, or visit Maxims website at www.maxim integrated.com. AVAILABLE D.N.C. CS H CS W SCLK(INC) W SCLK(INC) L DIN(U/D) L DIN(U/D) N.C. SPI/UD N.C. SPI/UDMAX5481MAX5484 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD A V to GND............................................................-3.5V to +0.3V 16-Pin TQFN (derate 17.5mW/C above +70C) .....1398.6mW SS V to V .............................................................-0.3V to +6.0V 14-Pin TSSOP (derate 9.1mW/C above +70C) ..........727mW DD SS H, L, W to V ..................................(V - 0.3V) to (V + 0.3V) Operating Temperature Range ...........................-40C to +85C SS SS DD CS, SCLK(INC), DIN(U/D), SPI/UD to GND ..-0.3V to (V + 0.3V) Junction Temperature......................................................+150C DD Maximum Continuous Current into H, L, and W Storage Temperature Range .............................-60C to +150C MAX5481/MAX5483.........................................................5mA Lead Temperature (soldering, 10s) .................................+300C MAX5482/MAX5484......................................................1.0mA Soldering Temperature (reflow) .......................................+260C Maximum Current into Any Other Pin ...............................50mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.25V, V = V = 0V, V = V , V = 0V, T = -40C to +85C, unless otherwise noted. Typical values are at DD SS GND H DD L A V = +5.0V, T = +25C, unless otherwise noted.) (Note 1) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE (MAX5481/MAX5482 programmable voltage-divider) Resolution N 10 Bits V = +2.7V 2 DD Integral Nonlinearity (Note 2) INL LSB V = +5V 2 DD V = +2.7V 1 DD Differential Nonlinearity (Note 2) DNL LSB V = +5V 1 DD End-to-End Resistance TC 35 ppm/C R Temperature Coefficient Ratiometric Resistance 5 ppm/C Temperature Coefficient MAX5481 -4 -2.5 0 Full-Scale Error FSE LSB MAX5482 -4 -0.75 0 MAX5481 0 +3.3 +5 Zero-Scale Error ZSE LSB MAX5482 0 +1.45 +5 MAX5481 7.5 10 12.5 End-to-End Resistance R k H-L MAX5482 37.5 50 62.5 Wiper Capacitance C 60 pF W W at code = 15, H and L MAX5481 6.3 shorted to V , measure SS Resistance from W to L and H k resistance from W to H, Figures MAX5482 25 1 and 2 DC PERFORMANCE (MAX5483/MAX5484 variable resistor) Resolution N 10 Bits V = +2.7V -1.6 DD Integral Nonlinearity (Note 3) INL R V = +3V -4 -1.4 +4 LSB DD V = +5V -4 -1.3 +4 DD V = +2.7V +0.45 DD Differential Nonlinearity (Note 3) DNL R V = +3V -1 +0.4 +1 LSB DD V = +5V -1 +0.35 +1 DD Variable-Resistor Temperature TC V = +3V to +5.25V code = 128 to 1024 35 ppm/C VR DD Coefficient 2 Maxim Integrated