MAX5494MAX5499 19-3562 Rev 2 1/06 10-Bit, Dual, Nonvolatile, Linear-Taper Digital Potentiometers General Description Features The MAX5494MAX5499 10-bit (1024-tap), dual, non- Wiper Position Stored in Nonvolatile Memory and volatile, linear-taper, programmable voltage-dividers Recalled Upon Power-Up and variable resistors perform the function of a 16-Pin, 5mm x 5mm x 0.8mm TQFN Package mechanical potentiometer, but replace the mechanics with a 3-wire SPI-compatible serial interface. The 35ppm/C End-to-End Resistance Temperature MAX5494/MAX5495 are dual, 3-terminal, programma- Coefficient ble voltage-dividers the MAX5496/MAX5497 are dual, 5ppm/C Ratiometric Temperature Coefficient 2-terminal variable resistors and the MAX5498/ MAX5499 include one 2-terminal variable resistor and 10k and 50k End-to-End Resistor Values one 3-terminal programmable voltage-divider. 3-Wire SPI-Compatible Serial Interface The MAX5494MAX5499 feature an internal, nonvolatile, Reliability (T = +85C) A electrically erasable programmable read-only memory 50,000 Wiper Store Cycles (EEPROM) that stores the wiper position for initialization 50 Years Wiper Data Retention during power-up. The 3-wire SPI-compatible serial inter- face allows communication at data rates up to 7MHz. 1.5A (max) Standby Current The MAX5494MAX5499 are ideal for applications requir- Single +2.7V to +5.25V Supply Operation ing digitally controlled potentiometers. End-to-end resis- Dual 2.5V Supply Operation tance values of 10k and 50k are available with a 35ppm/C end-to-end temperature coefficient. The ratio- Pin Configurations metric temperature coefficient is 5ppm/C for each chan- nel, making these devices ideal for applications requiring low-temperature-coefficient programmable voltage- TOP VIEW dividers such as low-drift, programmable-gain amplifiers. 12 11 10 9 The MAX5494MAX5499 operate with either a single DIN 13 V 8 SS power supply (+2.7V to +5.25V) or dual power supplies (2.5V). The devices consume 400A (max) of supply N.C. 14 7 N.C. current when writing data to the nonvolatile memory MAX5494 and 1.5A (max) of standby supply current. The MAX5495 N.C. 15 6 N.C. devices are available in space-saving (5mm x 5mm x 0.8mm), 16-pin TQFN package and are specified over SCLK V 16 5 DD the extended (-40C to +85C) temperature range. 12 34 Applications Gain and Offset Adjustment 5mm 5mm 0.8mm TQFN LCD Contrast Adjustment Pressure Sensors 12 11 10 9 Low-Drift Programmable-Gain Amplifiers Mechanical Potentiometer Replacement DIN 13 V 8 SS Volume Control N.C. 14 7 N.C. MAX5496 Ordering Information N.C. 15 MAX5497 N.C. 6 PIN- PART TEMP RANGE PKG CODE SCLK 16 V 5 DD PACKAGE MAX5494ETE -40C to +85C 16 TQFN-EP* T1655-2 12 34 MAX5495ETE -40C to +85C 16 TQFN-EP* T1655-2 *EP = Exposed pad. Ordering Information continued at end of data sheet. 5mm 5mm 0.8mm TQFN Selector Guide appears at end of data sheet. Pin Configurations continued at end of data sheet. SPI is a trademark of Motorola, Inc. Maxim Integrated Products 1 For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE INTERFACE GND CS INTERFACE GND CS W2 W1 W2 W1 L2 L1 L2 L1 H1 D.N.C. D.N.C. H210-Bit, Dual, 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 20.8mW/C above +70C) ....1666.7mW SS V to V .............................................................-0.3V to +6.0V Operating Temperature Range ...........................-40C to +85C DD SS H1, H2, L1, L2, W1, W2 to V .........(V - 0.3V) to (V + 0.3V) Junction Temperature......................................................+150C SS SS DD CS, SCLK, DIN to GND ..............................-0.3V to (V + 0.3V) Storage Temperature Range .............................-60C to +150C DD Maximum Continuous Current into H , L , and W Lead Temperature (soldering, 10s) .................................+300C MAX5494/MAX5496/MAX5498....................................5.0mA MAX5495/MAX5497/MAX5499....................................1.0mA Maximum Current Into Other Pins .................................50.0mA 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 = GND = 0, V = V , V = 0, T = -40C to +85C, unless otherwise noted. Typical values are at DD SS H DD L A V = +5.0V, T = +25C.) (Note 1) DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE (MAX5494/MAX5495/MAX5498/MAX5499 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 Temperature 5 ppm/C Coefficient MAX5494/MAX5498 -4 -2.5 0 Full-Scale Error FSE LSB MAX5495/MAX5499 -4 -0.75 0 MAX5494/MAX5498 0 3.3 5 Zero-Scale Error ZSE LSB MAX5495/MAX5499 0 1.45 5 Wiper Capacitance C 60 pF W MAX5494/MAX5498 7.5 10 12.5 End-to-End Resistance R k HL MAX5495/MAX5499 37.5 50 62.5 MAX5494 0.05 Channel-to-Channel Division V = 3V, midcode: 512 % DD Ratio Matching MAX5495 0.15 MAX5494/MAX5498, W at 15 code, H and L shorted to V , measure resistance from SS 6.3 W to H (Figures 4 and 5) Resistance from W to L and H k MAX5495/MAX5499, W at 15 code, H and L shorted to V , measure resistance from 25 SS W to H (Figures 4 and 5) 2 MAX5494MAX5499