MAX5387 19-5140 Rev 2 11/10 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer General Description Features The MAX5387 dual, 256-tap, volatile, low-voltage lin- S Dual, 256-Tap Linear Taper Positions ear taper digital potentiometer offers three end-to-end S Single +2.6V to +5.5V Supply Operation resistance values of 10kI, 50kI, and 100kI. Operating S Low < 1A Quiescent Supply Current from a single +2.6V to +5.5V power supply, the device S 10kI, 50kI, 100kI End-to-End Resistance Values provides a low 35ppm/NC end-to-end temperature coef- 2 ficient. The device features an I C interface. 2 S I C-Compatible Interface The small package size, low supply operating voltage, S Power-On Sets Wiper to Midscale low supply current, and automotive temperature range S -40NC to + 125NC Operating Temperature Range of the MAX5387 make the device uniquely suitable for the portable consumer market, battery backup industrial applications, and the automotive market. The MAX5387 is specified over the automotive -40NC to +125NC temperature range and is available in a 14-pin TSSOP package. Ordering Information Applications Low-Voltage Battery Applications END-TO-END PART PIN-PACKAGE Portable Electronics RESISTANCE (kI) MAX5387LAUD+ 14 TSSOP 10 Mechanical Potentiometer Replacement MAX5387MAUD+ 14 TSSOP 50 Offset and Gain Control MAX5387NAUD+ 14 TSSOP 100 Adjustable Voltage References/Linear Regulators Note: All devices are specified over the -40NC to +125NC oper- Automotive Electronics ating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. Functional Diagram V HA LA DD WA SCL LATCH 256 DECODER SDA HB A0 2 I C POR MAX5387 A1 WB A2 LATCH 256 DECODER LB GND 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 AVAILABLEDual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6V Continuous Power Dissipation (T = +70NC) DD A H , W , L to GND ......................................-0.3V to the lower of 14-Pin TSSOP (derate 10mW/NC above +70NC) ......796.8mW (V + 0.3V) and +6V Operating Temperature Range ....................... -40NC to +125NC DD Junction Temperature ....................................................+150NC All Other Pins to GND .............................................-0.3V to +6V Continuous Current into H , W , and L Storage Temperature Range ............................ -65NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC MAX5387L .....................................................................Q5mA MAX5387M ....................................................................Q2mA Soldering Temperature (reflow) ......................................+260NC MAX5387N..................................................................... Q1mA 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 = +2.6V to +5.5V, V = V , V = GND, T = -40NC to +125NC, unless otherwise noted. Typical values are at V = +5V, DD H DD L A DD T = +25NC.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Resolution N 256 Tap DC PERFORMANCE (Voltage-Divider Mode) Integral Nonlinearity INL (Note 2) -0.5 +0.5 LSB Differential Nonlinearity DNL (Note 2) -0.5 +0.5 LSB Dual Code Matching Register A = register B -0.5 +0.5 LSB Ratiometric Resistor Tempco (DV /V )/DT no load +5 LSB W W MAX5387L -3 -2.5 Full-Scale Error Code = FFH MAX5387M -1 -0.5 LSB MAX5387N -0.5 -0.25 MAX5387L +2.5 +3 Zero-Scale Error Code = 00H MAX5387M +0.5 +1.0 LSB MAX5387N +0.25 +0.5 DC PERFORMANCE (Variable-Resistor Mode) MAX5387L 1.0 2.5 MAX5387M 0.5 1.0 V > +2.6V DD MAX5387N 0.25 0.8 Integral Nonlinearity R-INL LSB MAX5387L 0.4 1.5 V > +4.75V MAX5387M 0.3 0.75 DD MAX5387N 0.25 0.5 Differential Nonlinearity R-DNL V > 2.6V (Note 3) -0.5 +0.5 LSB DD DC PERFORMANCE (Resistor Characteristics) V > 2.6V 250 600 DD Wiper Resistance (Note 4) R I WL V > 4.75V 150 200 DD Terminal Capacitance C , C Measured to GND 10 pF H L Wiper Capacitance C Measured to GND 50 pF W End-to-End Resistor Tempco TC No load 35 R ppm/NC End-to-End Resistor Tolerance DR Wiper not connected -25 +25 % HL 2 MAX5387