EVALUATION KIT AVAILABLE MAX5386/MAX5388 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers General Description Features The MAX5386/MAX5388 dual, 256-tap, volatile, low- volt- Dual, 256-Tap, Linear Taper Positions age linear taper digital potentiometers offer three end- Single +2.6V to +5.5V Supply Operation to-end resistance values of 10k, 50k, and 100k. Low (< 1A) Quiescent Supply Current Operating from a single +2.6V to +5.5V power supply these devices provide a low 35ppm/C end-to-end tem- 10k, 50k, 100k End-to-End Resistance Values perature coefficient. The devices feature an SPI interface. SPI-Compatible Interface The small package size, low supply voltage, low sup- Power-On Sets Wiper to Midscale ply current, and automotive temperature range of the -40C to +125C Operating Temperature Range MAX5386/MAX5388 make the devices uniquely suitable for the portable consumer market and battery-backup Ordering Information industrial applications. PIN- END-TO-END The MAX5386 includes two digital potentiometers in a PART PACKAGE RESISTANCE (k) voltage-divider configuration. The MAX5388 includes one digital potentiometer in a voltage-divider configura- MAX5386LATE+ 16 TQFN-EP* 10 tion and one digital potentiometer in a variable-resistor MAX5386MATE+ 16 TQFN-EP* 50 configuration. The MAX5386/MAX5388 are specified over MAX5386NATE+ 16 TQFN-EP* 100 an extended -40C to +125C temperature range and are MAX5388LAUB+ 10 MAX 10 available in 16-pin, 3mm x 3mm TQFN or 10-pin, 3mm x 5mm MAX packages, respectively. MAX5388MAUB+ 10 MAX 50 MAX5388NAUB+ 10 MAX 100 Applications Low-Voltage Battery Applications Note: All devices are specified over the -40C to +125C operating temperature range. Portable Electronics Mechanical Potentiometer Replacement +Denotes a lead(Pb)-free/RoHS-compliant package. Offset and Gain Control *EP = Exposed pad. Adjustable Voltage References/Linear Regulators Functional Diagrams appear at end of data sheet. MAX is a registered trademark of Maxim Integrated Products, Inc. Pin Configurations TOP VIEW 12 11 10 9 TOP VIEW N.C. 13 CS 8 + GND 1 10 LA 7 N.C. HA 14 LB 2 9 WA MAX5386 MAX5388 HB 3 8 V DD WA 15 6 N.C. WB 4 7 SCLK *EP LA 16 5 GND + CS 5 6 DIN 1 2 3 4 MAX TQFN *EP = EXPOSED PAD. 19-4599 Rev 3 9/14 HB V DD WB N.C. LB SCLK I.C. DINMAX5386/MAX5388 Dual, 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers 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 (V + 0.3V) and +6V 16 TQFN (derate 14.7mW/C above+70C)............1176.5mW DD All Other Pins to GND..............................................-0.3V to +6V 10 MAX (derate 8.8mW/C above+70C)...............707.3mW Continuous Current in to H , W , and L Operating Temperature Range...........................-40C to +125C MAX5386L/MAX5388L................................................... 5mA Junction Temperature.......................................................+150C MAX5386M/MAX5388M..................................................2mA Storage Temperature Range..............................-65C to +150C MAX5386N/MAX5388N...................................................1mA 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 = +2.6V to +5.5V, V = V , V = GND, T = T to T , unless otherwise noted. Typical values are at V = +5V, DD H DD L A MIN MAX 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 /V )/T no load 5 ppm/C W W MAX5386L/MAX5388L -3.0 -2.5 Full-Scale Error Code = FFH MAX5386M/MAX5388M -1.0 -0.5 LSB MAX5386N/MAX5388N -0.5 -0.25 MAX5386L/MAX5388L 2.5 3.0 Zero-Scale Error Code = 00H MAX5386M/MAX5388M +0.5 +1.0 LSB MAX5386N/MAX5388N +0.25 +0.5 DC PERFORMANCE (VARIABLE-RESISTOR MODE) (Note 3) MAX5386L/MAX5388L 1.0 2.5 V > +2.6V MAX5386M/MAX5388M 0.5 1.0 DD MAX5386N/MAX5388N 0.25 0.8 Integral Nonlinearity R-INL LSB MAX5386L/MAX5388L 0.4 1.5 V > +4.75V MAX5386M/MAX5388M 0.3 0.75 DD MAX5386N/MAX5388N 0.25 0.5 Differential Nonlinearity R-DNL V 2.6V -0.5 +0.5 LSB DD DC PERFORMANCE (RESISTOR CHARACTERISTICS) V 2.6V 250 600 DD Wiper Resistance (Note 4) R W 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 AC PERFORMANCE Crosstalk (Note 5) -90 dB MAX5386L/MAX5388L 600 Code = 80H, -3dB Bandwidth BW 10pF load, MAX5386M/MAX5388M 150 kHz V = +2.6V DD MAX5386N/MAX5388N 75 Maxim Integrated 2 www.maximintegrated.com