EVALUATION KIT AVAILABLE MAX5387 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer General Description Features The MAX5387 dual, 256-tap, volatile, low-voltage linear Dual, 256-Tap Linear Taper Positions taper digital potentiometer offers three end-to-end resis- Single +2.6V to +5.5V Supply Operation tance values of 10k, 50k, and 100k. Operating from Low < 1A Quiescent Supply Current a single +2.6V to +5.5V power supply, the device provides a low 35ppm/C end-to-end temperature coefficient. The 10k, 50k, 100k End-to-End Resistance Values 2 device features an I C interface. 2 I C-Compatible Interface The small package size, low supply operating voltage, Power-On Sets Wiper to Midscale low supply current, and automotive temperature range of -40C to + 125C Operating Temperature Range the MAX5387 make the device uniquely suitable for the portable consumer market and battery-backup industrial applications. The MAX5387 is specified over the automotive -40C to Ordering Information +125C temperature range and is available in a 14-pin TSSOP package. END-TO-END PART PIN-PACKAGE RESISTANCE (k) Applications MAX5387LAUD+ 14 TSSOP 10 Low-Voltage Battery Applications MAX5387MAUD+ 14 TSSOP 50 Portable Electronics MAX5387NAUD+ 14 TSSOP 100 Mechanical Potentiometer Replacement Note: All devices are specified over the -40C to +125C oper- Offset and Gain Control ating temperature range. Adjustable Voltage References/Linear Regulators +Denotes a lead(Pb)-free/RoHS-compliant package. Functional Diagram V HA WA LA DD SCL LATCH 256 DECODER SDA HB A0 2 I C POR MAX5387 A1 WB LATCH 256 DECODER A2 LB GND 19-5140 Rev 3 9/14MAX5387 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometer Absolute Maximum Ratings V to GND ............................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) DD A H , W , L to GND ..................................... -0.3V to the lower of 14-Pin TSSOP (derate 10mW/C above +70C) ......796.8mW (V + 0.3V) and +6V Operating Temperature Range ..........................-40C to +125C DD All Other Pins to GND..............................................-0.3V to +6V Junction Temperature ......................................................+150C Continuous Current into H , W , and L Storage Temperature Range .............................-65C to +150C MAX5387L ......................................................................5mA Lead Temperature (soldering, 10s) .................................+300C MAX5387M .....................................................................2mA Soldering Temperature (reflow) .......................................+260C MAX5387N .....................................................................1mA 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 = -40C to +125C, unless otherwise noted. Typical values are at V = +5V, DD H DD L A DD T = +25C.) (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 (V / )/T 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 V > +2.6V MAX5387M 0.5 1.0 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 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 ppm/C R End-to-End Resistor Tolerance R Wiper not connected -25 +25 % HL Maxim Integrated 2 www.maximintegrated.com