ad5259 Analog Devices, Inc., ad5259 Datasheet - Page 2

• Manufacturer Part Number: ad5259
• Description: Nonvolatile, I2c-compatible 256-position, Digital Potentiometer
• Manufacturer: Analog Devices, Inc.

AD5259
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
Test Circuits..................................................................................... 13
Theory of Operation ...................................................................... 14
I
REVISION HISTORY
7/05 — Rev. 0 to Rev. A
Added 10-Lead LFCSP.......................................................Universal
Changes to Features Section and
General Description Section ........................................................... 1
Changes to Table 1............................................................................ 3
Changes to Table 2 and Added Figure 4 ........................................ 5
Changes to Table 4............................................................................ 7
Changes to Figure 27 Caption....................................................... 11
Changes to Theory of Operation Section.................................... 14
Changes to I
Changes to Table 5.......................................................................... 16
Changes to Multiple Devices on One Bus Section..................... 19
Updated Figure 49 Caption ........................................................... 21
Changes to Ordering Guide .......................................................... 21
2/05 — Revision 0: Initial Version
2
C-Compatible Interface............................................................... 15
Electrical Characteristics............................................................. 3
Timing Characteristics ................................................................ 5
ESD Caution.................................................................................. 6
Programming the Variable Resistor......................................... 14
Programming the Potentiometer Divider ............................... 14
Writing ......................................................................................... 15
Storing/Restoring ....................................................................... 15
Reading ........................................................................................ 15
2
C-Compatible Interface Section............................ 15
Rev. A | Page 2 of 24
I
Display Applications ...................................................................... 20
Outline Dimensions ....................................................................... 21
2
C-Compatible Format ................................................................. 16
Generic Interface ........................................................................ 16
Write Modes................................................................................ 16
Read Modes................................................................................. 17
Store/Restore Modes .................................................................. 17
Tolerance Readback Modes ...................................................... 18
ESD Protection of Digital Pins and Resistor Terminals........ 19
Power-Up Sequence ................................................................... 19
Layout and Power Supply Bypassing ....................................... 19
Multiple Devices on One Bus ................................................... 19
Evaluation Board ........................................................................ 19
Circuitry ...................................................................................... 20
Ordering Guide .......................................................................... 21