参数资料
型号: AD5255BRU250
厂商: ANALOG DEVICES INC
元件分类: 数字电位计
英文描述: 3-Channel Digital Potentiometer with Nonvolatile Memory
中文描述: TRIPLE 250K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 512 POSITIONS, PDSO24
封装: MO-153AD, TSSOP-24
文件页数: 2/20页
文件大小: 626K
代理商: AD5255BRU250
AD5255
TABLE OF CONTENTS
Electrical Characteristics.................................................................3
Rev. 0 | Page 2 of 20
Electrical Characteristics.................................................................5
Absolute Maximum Ratings............................................................6
ESD Caution..................................................................................6
Pin Configuration and Function Descriptions.............................7
Typical Performance Characteristics.............................................8
Interface Descriptions....................................................................10
I
2
C Interface ................................................................................10
EEPROM Interface.....................................................................11
RDAC I
2
C 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
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