Datasheet AD5228 (Analog Devices) - 2

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AD5228 Data Sheet TABLE OF CONTENTS
Features .. 1 Terminal Voltage Operation Range ... 13 Applications ... 1 Power-Up and Power-Down Sequences .. 14 General Description ... 1 Layout and Power Supply Biasing .. 14 Revision History ... 2 Applications ... 15 Electrical Characteristics ... 3 Manual Adjustable LED Driver .. 15 Interface Timing Diagrams ... 4 Adjustable Current Source for LED Driver .. 15 Absolute Maximum Ratings .. 5 Adjustable High Power LED Driver .. 15 ESD Caution .. 5 Automatic LCD Panel Backlight Control .. 16 Pin Configuration and Function Descriptions ... 6 Audio Amplifier with Volume Control ... 16 Typical Performance Characteristics ... 7 Constant Bias with Supply to Retain Resistance Setting .. 17 Theory of Operation .. 11 Outline Dimensions ... 18 Programming the Digital Potentiometers ... 12 Ordering Guide .. 18 Controlling Inputs .. 13
REVISION HISTORY 6/15—Rev. A to Rev. B
Changes to Features Section and General Description Section .. 1 Changes to Ordering Guide ... 18
4/09—Rev. 0 to Rev. A
Changes to Table 2………………………………………………3
4/04—Revision 0: Initial Version
Rev. B | Page 2 of 18 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY ELECTRICAL CHARACTERISTICS INTERFACE TIMING DIAGRAMS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PROGRAMMING THE DIGITAL POTENTIOMETERS Rheostat Operation Potentiometer Mode Operation CONTROLLING INPUTS TERMINAL VOLTAGE OPERATION RANGE POWER-UP AND POWER-DOWN SEQUENCES LAYOUT AND POWER SUPPLY BIASING APPLICATIONS MANUAL ADJUSTABLE LED DRIVER ADJUSTABLE CURRENT SOURCE FOR LED DRIVER ADJUSTABLE HIGH POWER LED DRIVER AUTOMATIC LCD PANEL BACKLIGHT CONTROL AUDIO AMPLIFIER WITH VOLUME CONTROL CONSTANT BIAS WITH SUPPLY TO RETAIN RESISTANCE SETTING OUTLINE DIMENSIONS ORDERING GUIDE