MAX5450MAX5455 19-1997 Rev 2 2/06 Dual, 256-Tap, Up/Down Interface, Digital Potentiometers General Description Features The MAX5450MAX5455 are a family of dual digital Small-Footprint Packages potentiometers that perform the same function as a 10-Pin MAX (MAX5450/MAX5452/MAX5454) mechanical potentiometer or variable resistor. The 14-Pin TSSOP (MAX5451/MAX5453/MAX5455) MAX5451/MAX5453/MAX5455 have two 3-terminal 256-Tap Positions potentiometers and the MAX5450/MAX5452/MAX5454 have two 2-terminal variable resistors. The MAX5450 Independent Up/Down Potentiometer Controls MAX5455 operate from a +2.7V to +5.5V single-supply (MAX5451/MAX5453/MAX5455) voltage and use an ultra-low supply current of 0.1A. These devices consist of two fixed resistors each Ultra-Low 0.1A Supply Current with 256 digitally-controlled wiper contacts. The conve- +2.7V to +5.5V Single-Supply Operation nient power-on reset (POR) sets the wiper to midscale position at power-up and the easy-to-use up/down Low 35ppm/C End-to-End Temperature interface allows glitchless switching between Coefficient resistor taps. Six inputs control the 14-pin MAX5451/ Power-On Reset Sets Wiper to Midscale MAX5453/MAX5455 potentiometers. Four inputs control (Position 127) the 10-pin MAX5450/MAX5452/MAX5454 variable resis- tors. Glitchless Switching Between the Resistor Taps The MAX5450MAX5455 are ideal for applications 10k , 50k , 100k Resistance Values requiring digitally-controlled resistors. Three resistance values are available: 10k , 50k , and 100k . An end- to-end resistor temperature coefficient of 35ppm/C and a ratiometric temperature coefficient of 5ppm/C Ordering Information make the MAX5450MAX5455 excellent choices for PKG adjustable gain circuit requiring low-temperature drift PART PIN-PACKAGE R (k ) CODE The MAX5450MAX5455 are available in 10-pin MAX MAX5450EUB 10 MAX 10 U10C-4 and 14-pin TSSOP packages. Each device is guaran- MAX5451EUD 14 TSSOP 10 U14-1 teed over the extendedindustrial temperature range (-40C to +85C). MAX5452EUB 10 MAX 50 U10C-4 MAX5453EUD 14 TSSOP 50 U14-1 MAX5454EUB 10 MAX 100 U10C-4 Applications MAX5455EUD 14 TSSOP 100 U14-1 Mechanical Potentiometer Replacement Note: All devices specified over the -40C to +85C operating Low-Drift Programmable-Gain Amplifier (PGA) range. Volume Control Pin Configurations LCD Screen Adjustment Adjustable Voltage References TOP VIEW Adjustable Linear Regulators Programmable Filters, Delays, Time Constants CS1 1 14 CS2 CS1 1 10 CS2 Impedance Matching U/D1 2 13 INC1 U/D 2 9 INC MAX5450 U/D2 3 12 INC2 V 3 8 GND DD MAX5452 MAX5454 V 4 MAX5451 11 GND W1 4 7 W2 DD MAX5453 W1 5 10 W2 L1 5 6 L2 MAX5455 MAX is a registered trademark of Maxim Integrated Products, Inc. H1 6 9 H2 MAX L1 7 8 L2 TSSOP Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Dual, 256-Tap, Up/Down Interface, Digital Potentiometers ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V 14-Pin TSSOP (derate 9.1mW/C above +70C) ..........727mW DD CS , INC , and U/D to GND...................................-0.3V to +6V Operating Temperature Range ...........................-40C to +85C H , L , W to GND ......................................-0.3V to (V +0.3V) Junction Temperature......................................................+150C DD Maximum Continuous Current into H , L , and W ............1mA Storage Temperature Range .............................-65C to +150C Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10s) .................................+300C A 10-Pin MAX (derate 6.94mW/C above +70C) ..........555mW 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 +5.5V, V = V , V = 0 T = T to T , unless otherwise noted. Typical values are at V = +5V, T = +25C, DD H DD L A MIN MAX DD A unless otherwise noted.) PARAMETER SYMB O L CONDITIONS MINTYPMAXUNITS DC PERFORMANCE (Voltage-Divider Mode, MAX5451/MAX5453/MAX5455 Only) Resolution N 8 Bits V = +5V 1 Integral Nonlinearity DD INL LSB (Notes 1 and 2) V = +3V 1 DD V = +5V 1 Differential Nonlinearity DD DNL LSB (Notes 1 and 2) V = +3V 1 DD End-to-End Resistor Tempco TC 35 ppm/C R Ratiometric Resistor Tempco 5 ppm/C MAX5451 -8 Full-Scale Error MAX5453 -1.6 LSB MAX5455 -0.8 MAX5451 +8 Zero-Scale Error MAX5453 +1.6 LSB MAX5455 +0.8 DC PERFORMANCE (Variable Resistor Mode) Resolution N 8 Bits MAX5450, MAX5451 3 V = +5V DD MAX5452MAX5455 1 Integral Nonlinearity INL LSB (Notes 1 and 3) MAX5450, MAX5451 4.5 V = +3V DD MAX5452MAX5455 2 V = +5V 1 DD Differential Nonlinearity DNL LSB (Notes 1 and 3) V = +3V 1 DD DC PERFORMANCE (Resistor Characteristics) V = +5V, MAX5451/MAX5453/MAX5455 225 DD Wiper Resistance (Note 4) R W V = +3V, MAX5451/MAX5453/MAX5455 550 DD Wiper Capacitance C 10 pF W MAX5450, MAX5451 6.5 10 12.5 End-To-End Resistance R MAX5452, MAX5453 32 50 62.5 k HL MAX5454, MAX5455 60 100 125 2 MAX5450MAX5455