Single-Channel, 64-Position, Push Button, 8% Resistor Tolerance, Nonvolatile Digital Potentiometer Data Sheet AD5116 FEATURES FUNCTIONAL BLOCK DIAGRAM V DD Nominal resistor tolerance error: 8% maximum Wiper current: 6 mA DATA EEPROM Rheostat mode temperature coefficient: 35 ppm/C CONTROL LOGIC RDAC Low power consumption: 2.5 A max 2.7 V and 125C DATA BLOCK REGISTER V Wide bandwidth: 4 MHz (5 k option) DD ASE Power-on EEPROM refresh time < 50 s A PU ADAPTIVE W 50-year typical data retention at 125C DEBOUNCER PD B 1 million write cycles 2.3 V to 5.5 V supply operation AD5116 Built-in adaptive debouncer GND Wide operating temperature: 40C to +125C Figure 1. Thin, 2 mm 2 mm 0.55 mm 8-lead LFCSP package APPLICATIONS Table 1. NVM 8% Resistance Tolerance Family Mechanical potentiometer replacement Model Resistance (k) Position Interface Portable electronics level adjustment 2 AD5110 10, 80 128 I C Audio volume control AD5111 10, 80 128 Up/down Low resolution DAC 2 AD5112 5, 10, 80 64 I C LCD panel brightness and contrast control AD5113 5, 10, 80 64 Up/down Programmable voltage to current conversion AD5116 5, 10, 80 64 Push button Programmable filters, delays, time constants 2 AD5114 10, 80 32 I C Feedback resistor programmable power supply AD5115 10, 80 32 Up/down Sensor calibration GENERAL DESCRIPTION The AD5116 provides a nonvolatile digital potentiometer due to contact bounce (commonly found in mechanical solution for 64-position adjustment applications, offering switches). The debouncer is adaptive, accommodating a guaranteed low resistor tolerance errors of 8% and up to variety of push buttons. 6 mA current density in the A, B, and W pins. The low resistor The AD5116 can automatically save the last wiper position into tolerance, low nominal temperature coefficient, and high EEPROM, making it suitable for applications that require a bandwidth simplify open-loop applications, as well as tolerance power-up in the last wiper position, for example, audio matching applications. equipment. The new low A-W and B-W resistance feature minimizes The AD5116 is available in a 2 mm 2 mm 8-lead LFCSP the wiper resistance in the extremes of the resistor array to package. The part is guaranteed to operate over the extended typically 45 . industrial temperature range of 40C to +125C. A simple push button interface allows manual control with just two external push button switches. The AD5116 is designed with a built-in adaptive debouncer that ignores invalid bounces 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. No Tel: 781.329.4700 20112012 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 09657-001AD5116 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuits ..................................................................................... 12 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 13 Functional Block Diagram .............................................................. 1 RDAC Register ............................................................................ 13 General Description ......................................................................... 1 EEPROM ..................................................................................... 13 Revision History ............................................................................... 2 Automatic Save Enable .............................................................. 13 Specifications ..................................................................................... 3 End Scale Resistance Indicator ................................................. 14 Electrical Characteristics ............................................................. 3 RDAC Architecture .................................................................... 14 Interface Timing Specifications .................................................. 5 Programming the Variable Resistor ......................................... 14 Timing Diagrams .......................................................................... 5 Programming the Potentiometer Divider ............................... 15 Absolute Maximum Ratings ............................................................ 6 Terminal Voltage Operating Range ......................................... 15 Thermal Resistance ...................................................................... 6 Power-Up Sequence ................................................................... 15 ESD Caution .................................................................................. 6 Layout and Power Supply Biasing ............................................ 15 Pin Configuration and Function Descriptions ............................. 7 Outline Dimensions ....................................................................... 16 Typical Performance Characteristics ............................................. 8 Ordering Guide .......................................................................... 16 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 4/12Rev. 0 to Rev. A Changes to Features Section............................................................ 1 Changes to Positive Supply Current, Table 2 ................................ 4 Changes to Ordering Guide .......................................................... 16 10/11Revision 0: Initial Version Rev. B Page 2 of 16