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ADM1069ASTZ-REEL Datasheet(PDF) 2 Page - Analog Devices |
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ADM1069ASTZ-REEL Datasheet(HTML) 2 Page - Analog Devices |
2 / 32 page ADM1069 Rev. C | Page 2 of 32 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Detailed Block Diagram .................................................................. 3 Specifications..................................................................................... 4 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ........................................... 10 Powering the ADM1069 ................................................................ 13 Inputs................................................................................................ 14 Supply Supervision..................................................................... 14 Programming the Supply Fault Detectors............................... 14 Input Comparator Hysteresis.................................................... 14 Input Glitch Filtering ................................................................. 15 Supply Supervision with VXx Inputs....................................... 15 VXx Pins as Digital Inputs ........................................................ 15 Outputs ............................................................................................ 16 Supply Sequencing Through Configurable Output Drivers. 16 Default Output Configuration.................................................. 16 Sequencing Engine ......................................................................... 17 Overview...................................................................................... 17 Warnings...................................................................................... 17 SMBus Jump (Unconditional Jump)........................................ 17 Sequencing Engine Application Example ............................... 18 Fault and Status Reporting........................................................ 19 Voltage Readback............................................................................ 20 Supply Supervision with the ADC ........................................... 20 Supply Margining ........................................................................... 21 Overview ..................................................................................... 21 Open-Loop Supply Margining ................................................. 21 Closed-Loop Supply Margining ............................................... 21 Writing to the DACs .................................................................. 22 Choosing the Size of the Attenuation Resistor....................... 22 DAC Limiting and Other Safety Features ............................... 22 Applications Diagram .................................................................... 23 Communicating with the ADM1069........................................... 24 Configuration Download at Power-Up................................... 24 Updating the Configuration ..................................................... 24 Updating the Sequencing Engine............................................. 25 Internal Registers........................................................................ 25 EEPROM ..................................................................................... 25 Serial Bus Interface..................................................................... 25 SMBus Protocols for RAM and EEPROM.............................. 28 Write Operations ........................................................................ 28 Read Operations......................................................................... 30 Outline Dimensions ....................................................................... 31 Ordering Guide .......................................................................... 31 REVISION HISTORY 6/11—Rev. B to Rev. C Change to Serial Bus Timing Parameter in Table 1 ..................... 4 Changes to Ordering Guide .......................................................... 31 8/08—Rev. A to Rev. B Added 40-Lead LFCSP.......................................................Universal Changes to Table 1............................................................................ 4 Moved Absolute Maximum Ratings Section, Changes to Table 3... 7 Added Figure 4, Renumbered Sequentially; Changes to Table 4..... 8 Changes to Powering the ADM1069 Section ............................. 13 Changes to Default Output Configuration Section ................... 16 Changes to Sequence Detector Section ....................................... 18 Changes to Figure 32...................................................................... 21 Changes to Configuration Download at Power-Up Section..... 24 Changes to Table 11........................................................................ 25 Changes to Figure 45 and Error Correction Section ................. 30 Updated Outline Dimensions ....................................................... 31 Changes to Ordering Guide .......................................................... 31 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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