MAX5460MAX5468 19-1956 Rev 3 11/05 32-Tap FleaPoT , 2-Wire Digital Potentiometers General Description Features The MAX5460MAX5468 linear-taper digital potentiome- Miniature SC70 and SOT23 Packages ters perform the same function as a mechanical poten- 0.3A Ultra-Low Supply Current tiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 32-tap points that +2.7V to +5.5V Single-Supply Operation are digitally controlled through a 2-wire serial interface. Glitchless Switching Between Resistor Taps The MAX5462/MAX5465/MAX5468 are configured as potentiometers. The rest of the devices in this family are Power-On Reset to Midscale configured as variable resistors. See Pin Configurations 2-Wire Up/Down Serial Interface for part functionality. 10k, 50k , and 100k Resistance Values Three resistance values are available: 10k (MAX5466/ MAX5467/MAX5468), 50k (MAX5463/MAX5464/ MAX5465), and 100k (MAX5460/MAX5461/MAX5462). The MAX5460MAX5465 (100k and 50k ) are avail- able in space-saving 5-pin and 6-pin SC70 packages. The MAX5466/MAX5467/MAX5468 (10k) are available in 5-pin and 6-pin SOT23 packages. Applications Ordering Information LCD Screen Adjustment PIN- TOP R PKG PART PACKAGE MARK (k ) CODE Volume Control MAX5460EXK 5 SC70 ACA 100 X5-1 Mechanical Potentiometer Replacement MAX5461EXT 6 SC70 AAP 100 X6S-1 Gain Adjustment MAX5462EXT 6 SC70 AAQ 100 X6S-1 Line Impedance Matching MAX5463EXK 5 SC70 ACB 50 X5-1 MAX5464EXT 6 SC70 AAR 50 X6S-1 MAX5465EXT 6 SC70 AAS 50 X6S-1 MAX5466EUK 5 SOT23 ADQQ 10 U5-1 FleaPoT is a trademark of Maxim Integrated Products Inc. MAX5467EUT 6 SOT23 AARH 10 U6-1 Functional Diagram appears at end of data sheet. MAX5468EUT 6 SOT23 AARI 10 U6-1 Note: All devices operate over the -40C to +85C temperature range. Pin Configurations TOP VIEW V15 H V16 H V16 H DD DD DD 2 2 2 GND GND 5 L GND 5 W MAX5460 MAX5461 MAX5462 U/D34 CS U/D34 CS U/D34 CS MAX5463 MAX5464 MAX5465 MAX5466 MAX5467 MAX5468 SOT23, SC70 SOT23, SC70 SOT23, SC70 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. 32-Tap FleaPoT , 2-Wire Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A All Other Pins to GND.................................-0.3V to (V + 0.3)V 5-pin SC70 (derate 3.1mW/C above T = +70C)..........247mW DD A Input and Output Latch-Up Immunity.............................200mA 5-pin SOT23 (derate 7.1mW/C above T = +70C)........571mW A Maximum Continuous Current into H, L, and W 6-pin SC70 (derate 3.1mW/C above T = +70C)..........245mW A MAX5460/MAX5461/MAX5462 (100k).......................0.6mA 6-pin SOT23 (derate 8.7mW/C above T = +70C).....695.7mW A MAX5463/MAX5464/MAX5465 (50k).........................1.3mA Operating Temperature Range ...........................-40C to +85C MAX5466/MAX5467/MAX5468 (10k).........................1.3mA Junction Temperature......................................................+150C Storage Temperature Range .............................-65C to +150C Soldering 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 +5.5V, V = V , V = 0, T = -40C to +85C. Typical values are at V = +2.7V, T = +25C, unless DD H DD L A DD A otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE Resolution 32 Taps MAX5460/MAX5461/MAX5462 75 100 125 End-to-End Resistance k MAX5463/MAX5464/MAX5465 37.5 50 62.5 MAX5466/MAX5467/MAX5468 7.5 10 12.5 End-to-End Resistance Tempco TC 35 ppm/C R Ratiometric Resistance Tempco 5 ppm/C Integral Nonlinearity INL 0.5 1 LSB Differential Nonlinearity DNL 1 LSB Full-Scale Error 0.1 LSB Zero-Scale Error 1 LSB MAX5462/MAX5465 600 1200 Wiper Resistance R W MAX5468 160 240 DIGITAL INPUTS Input High Voltage V 0.7 x V V IH DD Input Low Voltage V 0.3 x V V IL DD TIMING CHARACTERISTICS (Figures 1, 2) U/D Mode to CS Setup t 25 ns CU CS to U/D Step Setup t 50 ns CI CS to U/D Step Hold t 25 ns IC U/D Step Low Period t 25 ns IL U/D Step High Period t 25 ns IH Up/Down Toggle Rate (Note 1) f 1 MHz TOGGLE 100k vari abl e res ist or co nfig ur ation, C = 10pF1 L Output Settling Time (Note 2) t s SETTLE 100k p otentiom eter confi g urati on , C = 10pF 0.25 L 2 MAX5460MAX5468