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参数资料
型号： ADM1069AST-REEL7
厂商： ANALOG DEVICES INC
元件分类： 电源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32
封装： MS-026-BBA, LQFP-32
文件页数： 12/36页
文件大小： 763K
代理商： ADM1069AST-REEL7
ADM1069
Rev. A | Page 2 of 36
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagram .............................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 4
Pin Configuration and Function Descriptions............................. 7
Absolute Maximum Ratings............................................................ 8
Thermal Characteristics .............................................................. 8
ESD Caution.................................................................................. 8
Typical Performance Characteristics ............................................. 9
Powering the ADM1069 ................................................................ 12
Inputs................................................................................................ 13
Supply Supervision..................................................................... 13
Programming the Supply Fault Detectors............................... 13
Input Comparator Hysteresis.................................................... 14
Input Glitch Filtering ................................................................. 14
Supply Supervision with VXn Inputs ...................................... 14
VXn Pins as Digital Inputs........................................................ 15
Outputs ............................................................................................ 16
Supply Sequencing through Configurable Output Drivers .. 16
Default Output Configuration.................................................. 17
Sequencing Engine ......................................................................... 18
Overview...................................................................................... 18
Warnings...................................................................................... 18
SMBus Jump/Unconditional Jump .......................................... 18
Sequencing Engine Application Example ............................... 19
Fault and Status Reporting........................................................ 21
Voltage Readback............................................................................ 22
Supply Supervision with the ADC ........................................... 22
Supply Margining ........................................................................... 23
Overview ..................................................................................... 23
Open-Loop Margining .............................................................. 23
Closed-Loop Supply Margining ............................................... 23
Writing to the DACs .................................................................. 24
Choosing the Size of the Attenuation Resistor....................... 24
DAC Limiting/Other Safety Features ...................................... 24
Applications Diagram .................................................................... 25
Communicating with the ADM1069........................................... 26
Configuration Download at Power-Up................................... 26
Updating the Configuration ..................................................... 26
Updating the Sequencing Engine............................................. 27
Internal Registers........................................................................ 27
EEPROM ..................................................................................... 27
Serial Bus Interface..................................................................... 28
SMBus Protocols for RAM and EEPROM.............................. 30
Write Operations ........................................................................ 30
Read Operations......................................................................... 31
Outline Dimensions ....................................................................... 33
Ordering Guide .......................................................................... 33
REVISION HISTORY
10/06—Rev. 0 to Rev. A
Changes to Features.......................................................................... 1
Changes to Figure 2.......................................................................... 3
Changes to Table 1............................................................................ 4
Changes to Table 2............................................................................ 7
Changes to Table 3............................................................................ 8
Inserted Table 4; Renumbered Sequentially.................................. 8
Changes to Programming the Supply Fault Detectors Section ..... 13
Changes to Outputs Section.......................................................... 16
Changes to Fault Reporting Section ............................................ 21
Changes to Table 9.......................................................................... 22
Inserted Table 11............................................................................. 28
Changes to Ordering Guide .......................................................... 33
3/05—Revision 0: Initial Version
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