EVALUATION KIT AVAILABLE MAX5391/MAX5393 Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers General Description Features The MAX5391/MAX5393 dual 256-tap, volatile, low- Dual 256-Tap Linear Taper Positions voltage linear taper digital potentiometers offer three Single +1.7V to +5.5V Supply Operation end-to-end resistance values of 10k, 50k, and 100k. Low 12A Quiescent Supply Current Operating from a single +1.7V to +5.5V power supply, these devices provide a low 35ppm/C end-to-end tem- 10k, 50k, and 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- ply current, and automotive temperature range of the Wiper Set to Midscale on Power-Up MAX5391/MAX5393 make the devices uniquely suitable -40C to +125C Operating Temperature Range for the portable consumer market and battery backup industrial applications. Ordering Information The MAX5391/MAX5393 include two digital potentiom- END-TO-END eters in a voltage-divider configuration. The MAX5391/ PART PIN-PACKAGE RESISTANCE (k) MAX5393 are specified over the -40C to +125C auto- motive temperature range and are available in a 16-pin, MAX5391LATE+ 16 TQFN-EP* 10 3mm x 3mm TQFN and a 14-pin TSSOP package, MAX5391MATE+ 16 TQFN-EP* 50 respectively. MAX5391NATE+ 16 TQFN-EP* 100 Applications MAX5393LAUD+ 14 TSSOP 10 Low-Voltage Battery Applications MAX5393MAUD+ 14 TSSOP 50 Portable Electronics MAX5393NAUD+ 14 TSSOP 100 Mechanical Potentiometer Replacement Offset and Gain Control Note: All devices are specified in the -40C to +125C tem- perature range. Adjustable Voltage References/Linear Regulators +Denotes lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. Functional Diagram WA V BYP HA LA DD CHARGE PUMP CS LATCH 256 DECODER HB SCLK MAX5391 SPI POR MAX5393 WB DIN LATCH 256 DECODER LB GND 19-5035 Rev 3 10/14MAX5391/MAX5393 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 14-Pin TSSOP (derate 10mW/C above +70C) ......796.8mW (V + 0.3V) or +6V 16-Pin TQFN (derate 14.7mW/C above +70C) ...1176.5mW DD All Other Pins to GND .............................................-0.3V to +6V Operating Temperature Range ......................... -40C to +125C Continuous Current into H , W , and L Junction Temperature ......................................................+150C MAX5391L/MAX5393L .......................................................5mA Storage Temperature Range ............................ -65C to +150C MAX5391M/MAX5393M .....................................................2mA Lead Temperature (soldering, 10s) .................................+300C MAX5391N/MAX5393N ......................................................1mA Soldering Temperature (reflow) .......................................+260C 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 = 0V, T = T to T , unless otherwise noted. Typical values are at V = +1.8V, 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 MAX5391L/MAX5393L -3 -2.2 Full-Scale Error Code = FFh MAX5391M/MAX5393M -1 -0.6 LSB MAX5391N/MAX5393N -0.5 -0.3 MAX5391L/MAX5393L 2.2 3 Zero-Scale Error Code = 00h MAX5391M/MAX5393M 0.6 1 LSB MAX5391N/MAX5393N 0.3 0.5 DC PERFORMANCE (Variable Resistor Mode) MAX5391L/MAX5393L -1.5 +1.5 Integral Nonlinearity (Note 3) R-INL MAX5391M/MAX5393M -0.75 +0.75 LSB MAX5391N/MAX5393N -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 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/C R End-to-End Resistor Tolerance R Wiper not connected -25 +25 % HL AC PERFORMANCE Crosstalk (Note 5) -90 dB MAX5391L/MAX5393L 600 Code = 80H, -3dB Bandwidth BW 10pF load, MAX5391M/MAX5393M 100 kHz V = 1.8V DD MAX5391N/MAX5393N 50 Total Harmonic Distortion Plus Noise THD+N Measured at W, V = 1V at 1kHz 0.02 % H RMS Maxim Integrated 2 www.maximintegrated.com