MAX5471/MAX5472/MAX5474/MAX5475 19-3067 Rev 1 2/06 32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers in SOT23 General Description Features The MAX5471/MAX5472/MAX5474/MAX5475 linear- Wiper Position Stored in Nonvolatile Memory and taper digital potentiometers function as mechanical Recalled Upon Power-Up potentiometers, but replace the mechanics with a sim- Tiny SOT23 Package ple 3-wire up/down digital interface. These digital potentiometers feature nonvolatile memory (EEPROM) 35ppm/C End-to-End Resistance Temperature to return the wiper to its previously stored position upon Coefficient power-up. 5ppm/C Ratiometric Temperature Coefficient The MAX5471/MAX5472 are 2-terminal, variable resistors in 6-pin SOT23 packages. The MAX5474/MAX5475 are 32 Tap Positions 3-terminal potentiometers in 8-pin SOT23 packages. Voltage-Divider or Variable-Resistor The MAX5471/MAX5474 have an end-to-end resistance Potentiometer Configuration of 50k, and the MAX5472/MAX5475 have an end- 50k and 100k End-to-End Resistance Values to-end resistance of 100k. All of these devices have 32 wiper positions, a low ratiometric temperature coeffi- 1A (max) Static Supply Current cient (5ppm/C), and all operate from a single +2.7V to 2.7V to 5.25V Single-Supply Operation +5.25V supply. Each device is guaranteed over the extended -40C to +85C temperature range. 200,000 Wiper Store Cycles 50-Year Wiper Data Retention Applications Mechanical Potentiometer Replacement Ordering Information Liquid-Crystal-Display (LCD) Screen Adjustment TEMP PKG Audio Volume Control PART PIN-PACKAGE RANGE CODE Programmable Filters M A X54 7 1 E Z T-T- 40 C to + 85 C 6 Thin SOT23-6 Z6-1 M A X54 7 2 E Z T-T- 40 C to + 85 C 6 Thin SOT23-6 Z6-1 M A X54 7 4 E KA-T- 40 C to + 85 C 8 SOT23-8 K8S-3 M A X54 7 5 E KA-T- 40 C to + 85 C 8 SOT23-8 K8S-3 Pin Configurations Selector Guide END-TO-END PART TOP MARK RESISTANCE (k) TOP VIEW MAX5471EZT 50 ABQN MAX5472EZT 100 ABQM V CS 1 6 DD CS 1 8 L MAX5474EKA 50 AEIZ MAX5475EKA 100 AEIY GND V 2 5 H DD 2 7 W 3 INC 3 H U/D 4 GND 6 MAX5471 MAX5472 MAX5474 4 5 U/D INC SOT23-6 MAX5475 SOT23-8 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLE32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers in SOT23 ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD A All Other 6-Pin SOT23 (derate 9.1mW/C above +70C)............727mW Pins to GND .........-0.3V to the lower of (V + 0.3V) or +6.0V 8-Pin SOT23 (derate 8.9mW/C above +70C)............714mW DD Maximum Continuous Current into H, L, and W Operating Temperature Range ...........................-40C to +85C MAX5471/MAX5474.....................................................1.3mA Junction Temperature......................................................+150C MAX5472/MAX5475.....................................................0.6mA Storage Temperature Range .............................-60C to +150C Lead Temperature (soldering, 10s) .................................+300C 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 , V = GND, T = -40C to +85C, unless otherwise noted. Typical values are at V = +5.0V, T DD H DD L A DD A = +25C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE Resolution N 32 Tap MAX5471/MAX5474 37.5 50 62.5 End-to-End Resistance k MAX5472/MAX5475 75 100 125 End-to-End Resistance TC 35 ppm/C R Temperature Coefficient Ratiometric Resistance 5 ppm/C Temperature Coefficient Variable-resistor mode (Note 2) 0.5 1.0 Integral Nonlinearity INL LSB Voltage-divider mode (MAX5474/MAX5475) 0.1 0.5 (Note 3) Variable-resistor mode (Note 2) 0.5 1.0 Differential Nonlinearity DNL LSB Voltage-divider mode (MAX5474/MAX5475) 0.1 0.5 (Note 3) Full-Scale Error MAX5474/MAX5475 -0.5 LSB Zero-Scale Error MAX5474/MAX5475 +0.5 LSB Wiper Resistance R MAX5474/MAX5475 (Note 4) 600 1200 W DIGITAL INPUTS (CS, U/D, INC) (Note 5) V < 3.6V 0.7 x V DD DD Input High Voltage V V IH V 3.6V 2.4 DD V < 3.6V 0.3 x V DD DD Input Low Voltage V V IL V 3.6V 0.8 DD Input Current I 0.1 1 A IN DYNAMIC CHARACTERISTICS MAX5471/MAX5474 400 Wiper -3dB Bandwidth (Note 6) kHz MAX5472/MAX5475 200 2 MAX5471/MAX5472/MAX5474/MAX5475