2 Single-Channel, 128-/64-/32-Position, I C, 8% Resistor Tolerance, Nonvolatile Digital Potentiometer Data Sheet AD5110/AD5112/AD5114 FEATURES FUNCTIONAL BLOCK DIAGRAM V V LOGIC DD Nominal resistor tolerance error: 8% maximum Wiper current: 6 mA AD5110/AD5112/AD5114 Rheostat mode temperature coefficient: 35 ppm/C POWER-ON Low power consumption: 2.5 A max 2.7 V and 125C RESET A Wide bandwidth: 4 MHz (5 k option) W Power-on EEPROM refresh time < 50 s DATA EEPROM SDA B 50-year typical data retention at 125C 2 I C SERIAL 1 million write cycles RDAC INTERFACE SCL DATA REGISTER 2.3 V to 5.5 V analog supply operation 1.8 V to 5.5 V logic supply operation Wide operating temperature: 40C to +125C GND Thin, 2 mm 2 mm 0.55 mm 8-lead LFCSP package Figure 1. APPLICATIONS Mechanical potentiometer replacement Table 1. 8% Resistance Tolerance Family Portable electronics level adjustment Model Resistance (k) Position Interface Audio volume control 2 AD5110 10, 80 128 I C Low resolution DAC AD5111 10, 80 128 Up/down LCD panel brightness and contrast control 2 AD5112 5, 10, 80 64 I C Programmable voltage to current conversion AD5113 5, 10, 80 64 Up/down Programmable filters, delays, time constants AD5116 5, 10, 80 64 Push-button Feedback resistor programmable power supply 2 AD5114 10, 80 32 I C Sensor calibration AD5115 10, 80 32 Up/down GENERAL DESCRIPTION 2 The AD5110/AD5112/AD5114 provide a nonvolatile solution The wiper settings are controllable through an I C-compatible for 128-/64-/32-position adjustment applications, offering digital interface that is also used to readback the wiper register guaranteed low resistor tolerance errors of 8% and up to and EEPROM content. Resistor tolerance is stored within 6 mA current density in the A, B, and W pins. The low resistor EEPROM, providing an end-to-end tolerance accuracy of 0.1%. tolerance, low nominal temperature coefficient and high The AD5110/AD5112/AD5114 are available in a 2 mm 2 mm bandwidth simplify open-loop applications, as well as tolerance LFCSP package. The parts are guaranteed to operate over the matching applications. extended industrial temperature range of 40C to +125C. The new low wiper resistance feature minimizes the wiper resistance in the extremes of the resistor array to only 45 , typical. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. 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Technical Support www.analog.com 09582-001AD5110/AD5112/AD5114 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 19 Applications ....................................................................................... 1 RDAC Register and EEPROM .................................................. 19 2 Functional Block Diagram .............................................................. 1 I C Serial Data Interface ............................................................ 19 General Description ......................................................................... 1 Input Shift Register .................................................................... 20 Revision History ............................................................................... 2 Write Operation.......................................................................... 21 Specifications ..................................................................................... 3 EEPROM Write Acknowlegde Polling .................................... 23 Electrical CharacteristicsAD5110 .......................................... 3 Read Operation........................................................................... 23 Electrical CharacteristicsAD5112 .......................................... 5 Reset ............................................................................................. 23 Electrical CharacteristicsAD5114 .......................................... 7 Shutdown Mode ......................................................................... 23 Interface Timing Specifications .................................................. 9 RDAC Architecture .................................................................... 24 Shift Register and Timing Diagram ......................................... 10 Programming the Variable Resistor ......................................... 24 Absolute Maximum Ratings .......................................................... 11 Programming the Potentiometer Divider ............................... 25 Thermal Resistance .................................................................... 11 Terminal Voltage Operating Range ......................................... 26 ESD Caution ................................................................................ 11 Power-Up Sequence ................................................................... 26 Pin Configuration and Function Descriptions ........................... 12 Layout and Power Supply Biasing ............................................ 26 Typical Performance Characteristics ........................................... 13 Outline Dimensions ....................................................................... 27 Test Circuits ..................................................................................... 18 Ordering Guide .......................................................................... 27 REVISION HISTORY 11/12Rev. A to Rev. B Changed Low Power Consumption from 2.5 mA to 2.5 A....... 1 Changed I Unit from mA to A, Table 2 .................................... 4 DD Changed I Unit from mA to A, Table 3 .................................... 6 DD Changed I Unit from mA to A, Table 4 .................................... 8 DD Changes to Figure 45 ...................................................................... 23 4/12Rev. 0 to Rev. A Changes to Features Section............................................................ 1 Changes to Positive Supply Current, Table 2 ................................ 4 Changes to Positive Supply Current, Table 3 ................................ 6 Changes to Positive Supply Current, Table 4 ................................ 8 Updated Outline Dimensions ....................................................... 27 10/11Revision 0: Initial Version Rev. B Page 2 of 28