MAX5417/MAX5418/MAX5419 19-3185 Rev 4 4/10 2 256-Tap, Nonvolatile, I C-Interface, Digital Potentiometers General Description Features The MAX5417/MAX5418/MAX5419 nonvolatile, linear- Power-On Recall of Wiper Position from taper, digital potentiometers perform the function of a Nonvolatile Memory mechanical potentiometer by replacing the mechanics Tiny 3mm x 3mm 8-Pin TDFN Package with a simple 2-wire digital interface, allowing communi- 35ppm/C End-to-End Resistance Temperature cation with multiple devices. Each device performs the Coefficient same function as a discrete potentiometer or variable resistor and has 256 tap points. 5ppm/C Ratiometric Temperature Coefficient The devices feature an internal, nonvolatile EEPROM 50k /100k /200k Resistor Values used to store the wiper position for initialization during 2 2 Fast I C-Compatible Serial Interface power-up. The fast-mode I C-compatible serial interface allows communication at data rates up to 400kbps, mini- 500nA (typ) Static Supply Current mizing board space and reducing interconnection com- Single-Supply Operation: +2.7V to +5.25V plexity in many applications. Each device is available with one of four factory-preset addresses (see the Ordering 256 Tap Positions Information/Selector Guide) and features an address 0.5 LSB DNL in Voltage-Divider Mode input for a total of eight unique address combinations. 0.5 LSB INL in Voltage-Divider Mode The MAX5417/MAX5418/MAX5419 provide three nomi- nal resistance values: 50k (MAX5417), 100k (MAX5418), or 200k (MAX5419). The nominal resistor Functional Diagram temperature coefficient is 35ppm/C end-to-end, and only 5ppm/C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gain- H amplifier circuit configurations. 8-BIT 256- 8 8 256 8-BIT V POSITION W The MAX5417/MAX5418/MAX5419 are available in a DD SHIFT LATCH REGISTER DECODER GND 3mm x 3mm 8-pin TDFN package, and are specified L over the extended -40C to +85C temperature range. 2 SDA I C POR MAX5417 Applications SCL INTERFACE 8-BIT MAX5418 NV Mechanical Potentiometer Replacement MAX5419 A MEMORY 0 Low-Drift Programmable-Gain Amplifiers Volume Control Liquid-Crystal Display (LCD) Contrast Control Ordering Information/Selector Guide 2 PART TEMP RANGE I C ADDRESS R (k ) PIN-PACKAGE TOP MARK MAX5417LETA+ -40C to +85C 010100A 50 8 TDFN-EP** AIB 0 MAX5417META+ -40C to +85C 010101A 50 8 TDFN-EP** ALS 0 MAX5417NETA+ -40C to +85C 010110A 50 8 TDFN-EP** ALT 0 MAX5417PETA+ -40C to +85C 010111A 50 8 TDFN-EP** ALU 0 MAX5418LETA+ -40C to +85C 010100A 100 8 TDFN-EP** AIC 0 MAX5418META+ -40C to +85C 010101A 100 8 TDFN-EP** ALV 0 MAX5418NETA+ -40C to +85C 010110A 100 8 TDFN-EP** ALW 0 MAX5418PETA+ -40C to +85C 010111A 100 8 TDFN-EP** ALX 0 MAX5419LETA+ -40C to +85C 010100A 200 8 TDFN-EP** AID 0 MAX5419META+ -40C to +85C 010101A 200 8 TDFN-EP** ALY 0 MAX5419NETA+ -40C to +85C 010110A 200 8 TDFN-EP** ALZ 0 MAX5419PETA+ -40C to +85C 010111A 200 8 TDFN-EP** AMA 0 +Denotes a lead(Pb)-free/RoHS-compliant package. **Exposed pad. Pin Configuration appears at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.2 256-Tap, Nonvolatile, I C-Interface, Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +6.0V Continuous Power Dissipation (T = +70C) DD A All Other Pins to GND.................................-0.3V to (V + 0.3V) 8-Pin TDFN (derate 24.4mW/C above +70C) .........1951mW DD Maximum Continuous Current into H, L, and W Operating Temperature Range ...........................-40C to +85C MAX5417......................................................................1.3mA Junction Temperature......................................................+150C MAX5418......................................................................0.6mA Storage Temperature Range .............................-60C to +150C MAX5419......................................................................0.3mA Lead Temperature (soldering, 10s) .................................+300C 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 = +2.7V to +5.25V, H = V , L = GND, T = -40C to +85C, unless otherwise noted. Typical values are at V = +5V, T = +25C.) DD DD A DD A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC PERFORMANCE (VOLTAGE-DIVIDER MODE) Resolution 256 Taps Integral Nonlinearity INL (Note 1) 0.5 LSB Differential Nonlinearity DNL (Note 1) 0.5 LSB End-to-End Temperature TC 35 ppm/C R Coefficient Ratiometric Temperature 5 ppm/C Coefficient MAX5417 , 50 -0.6 Full-Scale Error MAX5418 , 100k -0.3 LSB MAX5419 , 200k -0.15 MAX5417 , 50k 0.6 Zero-Scale Error MAX5418 , 100k 0.3 LSB MAX5419 , 200k 0.15 DC PERFORMANCE (VARIABLE-RESISTOR MODE) V = 3V 3 Integral Nonlinearity DD INL LSB (Note 2) V = 5V 1.5 DD V = 3V, MAX5417 , 50k -1 +2 DD V = 3V, MAX5418 , 100k 1 Differential Nonlinearity DD DNL LSB (Note 2) V = 3V, MAX5419 , 200k 1 DD V = 5V 1 DD DC PERFORMANCE (RESISTOR CHARACTERISTICS) Wiper Resistance R V = 3V to 5.25V (Note 3) 325 675 W DD Wiper Capacitance C 10 pF W MAX5417 37.5 50 62.5 End-to-End Resistance R k HL MAX5418 75 100 125 MAX5419 150 200 250 2 MAX5417/MAX5418/MAX5419