MAX5392 19-5122 Rev 2 11/10 Dual, 256-Tap, Volatile, Low-Voltage, Linear Taper Digital Potentiometer General Description Features The MAX5392 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 +1.7V to +5.5V Supply Operation resistance values of 10kI, 50kI, and 100kI. Operating S Low 12A Quiescent Supply Current from a single +1.7V 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 Wiper Set to Midscale on Power-Up low supply current, and automotive temperature range S -40NC to +125NC Operating Temperature Range of the MAX5392 makes the device uniquely suited for the portable consumer market, battery-backup industrial applications, and the automotive market. The MAX5392 is specified over the automotive -40NC to Ordering Information +125NC temperature range and is available in a 16-pin TSSOP package. END-TO-END PART PIN-PACKAGE RESISTANCE (kI) MAX5392LAUE+ 16 TSSOP 10 MAX5392MAUE+ 16 TSSOP 50 Applications MAX5392NAUE+ 16 TSSOP 100 Low-Voltage Battery Applications Note: All devices are specified over the -40C to +125NC oper- Portable Electronics ating temperature range. Mechanical Potentiometer Replacement +Denotes a lead(Pb)-free/RoHS-compliant package. Offset and Gain Control Adjustable Voltage References/Linear Regulators Functional Diagram Automotive Electronics V BYP HA LA WA DD CHARGE PUMP SCL LATCH 256 DECODER SDA HB A0 2 I C POR MAX5392 A1 WB LATCH 256 DECODER A2 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 16-Pin TSSOP (derate 11.1mW/NC above +70NC) ...888.9mW (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 in to H , W , and L Storage Temperature Range ............................ -65NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC MAX5392L .....................................................................Q5mA MAX5392M ....................................................................Q2mA Soldering Temperature (reflow) ......................................+260NC MAX5392N..................................................................... 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 = +1.7V to +5.5V, V = V , V = 0, T = T to T , unless otherwise noted. Typical values are at V = +1.8V, DD H DD L A MIN MAX 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 ppm/NC W W MAX5392L -3 -2.2 Full-Scale Error Code = FFh MAX5392M -1 -0.6 LSB MAX5392N -0.5 -0.3 MAX5392L 2.2 3 Zero-Scale Error Code = 00h MAX5392M 0.6 1.0 LSB MAX5392N 0.3 0.5 DC PERFORMANCE (Variable Resistor Mode) MAX5392L (Note 3) -1.5 +1.5 Integral Nonlinearity R-INL MAX5392M (Note 3) -0.75 +0.75 LSB MAX5392N (Note 3) -0.5 +0.5 Differential Nonlinearity R-DNL (Note 3) -0.5 +0.5 LSB DC PERFORMANCE (Resistor Characteristics) Wiper Resistance R (Note 4) 200 I WL 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 ppm/NC R End-to-End Resistor Tolerance DR Wiper not connected -25 +25 % HL 2 MAX5392