MAX5394 Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer General Description Benefits and Features The MAX5394 single, 256-tap volatile, low-voltage Single Linear Taper 256-Tap Positions linear taper digital potentiometer offers three end-to- 10k, 50k, and 100k End-to-End Resistance end resistance values of 10k, 50k, and 100k. 1.7V to 5.5V Extended Single Supply Potentiometer terminals are independent of supply for voltages up to 5.25V with single-supply operation from 0 to 5.25V H, W, L Operating Voltage Independent of V DD 1.7V to 5.5V (charge pump enabled). User-controlled 1A (typ) Supply Current in Low-Power Mode shutdown modes allow the H, W, or L terminal to be 1.0 LSB INL, 0.5 LSB DNL (max) Wiper Accuracy opened with the wiper position set to zero-code, midcode, Power-On Sets Wiper to Midscale full-code, or the value contained in the wiper register. Ultra- low-quiescent supply current (< 1A) can be achieved 50ppm/C End-to-End Temperature Coefficient for supply voltages between 2.6V and 5.5V by disabling 5ppm/C Ratiometric Temperature Coefficient the internal charge pump and not allowing potentiometer -40C to +125C Operating Temperature Range terminals to exceed the supply voltage by more than 0.3V. The MAX5394 provides a low 50ppm/C end-to-end 2mm x 2mm, 8-Pin TDFN Package temperature coefficient and features a SPI serial interface. SPI-Compatible Serial Interface The small package size, low operating supply voltage, low supply current, and automotive temperature range Applications of the MAX5394 make the device uniquely suited for the Portable Electronics portable consumer market and battery-backup industrial System Calibration applications. Battery-Powered Systems The MAX5394 is available in a lead-free, 8-pin TDFN Mechanical Potentiometer Replacement (2mm x 2mm) package. The device operates over the -40C to +125C automotive temperature range. Ordering Information appears at end of data sheet. Typical Operating Circuit 1.7V TO 5.5V V DD (CHARGE PUMP ENABLED) H +5V V S MAX5394 V O MAX4250 CS W SPI DIN INTERFACE SCLK R1 GND L V /V = 1 + R /R O S MAX5394 1 19-6392 Rev 3 1/16MAX5394 Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer Absolute Maximum Ratings (All voltages referenced to GND.) Maximum Current into Any Input ........................................50mA V ......................................................................... -0.3V to +6V Continuous Power Dissipation (T = +70C) DD A H, W, L (charge pump enabled) .......................... -0.3V to +5.5V TDFN (derate 11.9mW/C above +70C) ................ 953.5mW H, W, L (charge pump disabled).................-0.3V to the lower of Operating Temperature Range ......................... -40C to +125C (V + 0.3V) or +6V Storage Temperature Range ............................ -65C to +150C DD All Other Pins ......................................................... -0.3V to +6V Junction Temperature ......................................................+150C Continuous Current into H, W, and L Lead Temperature (soldering, 10s) .................................+300C MAX5394L ........................................................................5mA Soldering Temperature (reflow) .......................................+260C MAX5394M .......................................................................2mA MAX5394N .......................................................................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. (Note 1) Package Thermal Characteristics TDFN Junction-to-Ambient Thermal Resistance ( ) .......83.9C/W JA Junction-to-Case Thermal Resistance ( ) ............37.0C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = 1.7V to 5.5V, V = V , V = GND, T = -40C to +125C, unless otherwise noted. Typical values are at V = 1.8V, DD H DD L A DD T = +25C.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RESOLUTION 256-Tap Family N 256 Tap DC PERFORMANCE (VOLTAGE-DIVIDER MODE) Integral Nonlinearity (Note 3) INL -1.0 +1.0 LSB Differential Nonlinearity DNL (Note 3) -0.5 +0.5 LSB Ratiometric Resistor Tempco (DV /V )/DT, V = V , V = GND, no load 5 ppm/C W W H DD L Charge pump enabled, 1.7V < V < 5.5V -0.5 DD MAX5394M Full-Scale Error (Code FFh) -0.5 LSB Charge pump disabled, MAX5394N 2.6V < V < 5.5VS DD MAX5394L -1.0 Charge pump enabled, 1.7V < V < 5.5V +0.5 DD MAX5394M Zero-Scale Error (Code 00h) +0.5 LSB Charge pump disabled, MAX5394N 2.6V < V < 5.5V DD MAX5394L +1.0 DC PERFORMANCE (VARIABLE RESISTOR MODE) Charge pump enabled, 1.7V < V < 5.5V -1.0 +1.0 DD MAX5394M -1.0 +1.0 Integral Nonlinearity (Note 4) R-INL LSB Charge pump disabled, MAX5394N 2.6V < V < 5.5V DD MAX5394L -1.5 +1.5 Maxim Integrated 2 www.maximintegrated.com