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AD5255 Datasheet(PDF) 2 Page - Analog Devices |
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AD5255 Datasheet(HTML) 2 Page - Analog Devices |
2 / 20 page ![]() AD5255 Rev. 0 | Page 2 of 20 TABLE OF CONTENTS Electrical Characteristics ................................................................. 3 Electrical Characteristics ................................................................. 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ............................................. 8 Interface Descriptions .................................................................... 10 I2C Interface ................................................................................ 10 EEPROM Interface..................................................................... 11 RDAC I2C Interface.................................................................... 12 Theory of Operation ...................................................................... 15 Linear Increment and Decrement Commands ...................... 15 Logarithmic Taper Mode Adjustment (±6 dB/step) .............. 15 Using Additional Internal Nonvolatile EEPROM .................. 16 Digital Input/Output Configuration........................................ 16 Multiple Devices on One Bus ................................................... 16 Level Shift for Bidirectional Communication ........................ 16 Terminal Voltage Operation Range ......................................... 16 Power-Up Sequence ................................................................... 17 Layout and Power Supply Biasing ............................................ 17 RDAC Structure.......................................................................... 17 Calculating the Programmable Resistance ............................. 17 Programming the Potentiometer Divider............................... 18 Applications..................................................................................... 19 Laser Diode Driver (LDD) Calibration................................... 19 Outline Dimensions ....................................................................... 20 Ordering Guide .......................................................................... 20 REVISION HISTORY 7/04—Revision 0: Initial Version |