2 MAX5395 Single, 256-Tap Volatile, I C, Low-Voltage Linear Taper Digital Potentiometer General Description Benefits and Features The MAX5395 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, mid- Power-On Sets Wiper to Midscale code, full-code, or the value contained in the wiper register. Ultra-low-quiescent supply current (< 1A) can 50ppm/C End-to-End Temperature Coefficient be achieved for supply voltages between 2.6V and 5.5V 5ppm/C Ratiometric Temperature Coefficient by disabling the internal charge pump and not allowing -40C to +125C Operating Temperature Range potentiometer terminals to exceed the supply voltage by more than 0.3V. The MAX5395 provides a low 50ppm/C 2mm x 2mm, 8-Pin TDFN Package 2 end-to-end temperature coefficient and features an I C 2 I C-Compatible Serial Interface serial interface. The small package size, low operating supply voltage, Applications low supply current, and automotive temperature range Portable Electronics of the MAX5395 make the device uniquely suited for the System Calibration portable consumer market and battery-backup industrial Battery-Powered Systems applications. Mechanical Potentiometer Replacement The MAX5395 is available in a lead-free, 8-pin TDFN (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 MAX5395 V O MAX4250 ADDR0 2 W I C SDA INTERFACE SCL R1 GND L V /V = 1 + R /R O S MAX5395 1 19-6393 Rev 3 2/162 MAX5395 Single, 256-Tap Volatile, I C, 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 ADDR0 ..................... -0.3V to the lower of (V + 0.3V) or +6V Junction Temperature ......................................................+150C DD All Other Pins .........................................................-0.3V to +6V Lead Temperature (soldering, 10s) ................................+ 300C Continuous Current into H, W, and L Soldering Temperature (reflow) ......................................+260C MAX5395L ........................................................................5mA MAX5395M .......................................................................2mA MAX5395N .......................................................................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. Package Thermal Characteristics (Note 1) TDFN Junction-to-Ambient Thermal Resistance ( ) .......83.9C/W Junction-to-Ambient Thermal Resistance ( ) .......37.0C/W JA 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 (DV /V )/DT, V = V , V = GND, No W W H DD L Ratiometric Resistor Tempco 5 ppm/C Load Charge pump enabled, 1.7V < V < 5.5V -0.5 DD MAX5395M Full-Scale Error (Code FFh) LSB -0.5 Charge pump disabled, MAX5395N 2.6V < V < 5.5V DD MAX5395L -1.0 Charge pump enabled, 1.7V < V < 5.5V +0.5 DD MAX5395M Zero-Scale Error (Code 00h) LSB +0.5 Charge pump disabled, MAX5395N 2.6V < V < 5.5V DD MAX5395L +1.0 DC PERFORMANCE (Variable Resistor Mode) Charge pump enabled, 1.7V < V < 5.5V -1.0 +1.0 DD MAX5395M Integral Nonlinearity (Note 4) R-INL LSB -1.0 +1.0 Charge pump disabled, MAX5395N 2.6V < V < 5.5V DD MAX5395L -1.5 +1.5 Differential Nonlinearity R-DNL (Note 4) -0.5 +0.5 LSB Charge pump enabled, 1.7V < V < 5.5V 25 50 DD Wiper Resistance (Note 5) R WL Charge pump disabled, 2.6V < V < 5.5V 200 DD Maxim Integrated 2 www.maximintegrated.com