AD5522 查看數據表（PDF） - Analog Devices
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AD5522 Datasheet PDF : 64 Pages
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AD5522
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
General Description ......................................................................... 4
Specifications..................................................................................... 6
Timing Characteristics .............................................................. 11
Absolute Maximum Ratings.......................................................... 15
Thermal Resistance .................................................................... 15
ESD Caution................................................................................ 15
Pin Configurations and Function Descriptions ......................... 16
Typical Performance Characteristics ........................................... 22
Terminology .................................................................................... 29
Theory of Operation ...................................................................... 30
Force Amplifier........................................................................... 30
Comparators................................................................................ 30
Clamps ......................................................................................... 30
Current Range Selection............................................................ 31
High Current Ranges ................................................................. 31
Measure Current Gains.............................................................. 32
VMID Voltage ............................................................................. 32
Choosing Power Supply Rails ................................................... 33
Measure Output (MEASOUTx Pins)....................................... 33
Device Under Test Ground (DUTGND)................................. 33
Guard Amplifier ......................................................................... 34
Compensation Capacitors ......................................................... 34
System Force and Sense Switches ............................................. 35
Temperature Sensor ................................................................... 35
DAC Levels ...................................................................................... 36
Offset DAC .................................................................................. 36
Gain and Offset Registers.......................................................... 36
Cached X2 Registers................................................................... 37
Reference Voltage (VREF)......................................................... 37
Reference Selection .................................................................... 37
Data Sheet
Calibration................................................................................... 38
Additional Calibration............................................................... 39
System Level Calibration........................................................... 39
Circuit Operation ........................................................................... 40
Force Voltage (FV) Mode .......................................................... 40
Force Current (FI) Mode........................................................... 41
Serial Interface ................................................................................ 42
SPI Interface ................................................................................ 42
LVDS Interface............................................................................ 42
Serial Interface Write Mode ...................................................... 42
RESET Function ......................................................................... 42
BUSY and LOAD Functions ..................................................... 42
Register Update Rates ................................................................ 44
Register Selection ....................................................................... 44
Write System Control Register ................................................. 46
Write PMU Register................................................................... 48
Write DAC Register ................................................................... 50
Read Registers............................................................................. 53
Readback of System Control Register...................................... 54
Readback of PMU Register ....................................................... 55
Readback of Comparator Status Register................................ 56
Readback of Alarm Status Register.......................................... 56
Readback of DAC Register........................................................ 57
Applications Information .............................................................. 58
Power-On Default ...................................................................... 58
Setting Up the Device on Power-On ....................................... 58
Changing Modes ........................................................................ 59
Required External Components............................................... 59
Power Supply Decoupling ......................................................... 60
Power Supply Sequencing ......................................................... 60
Typical Application for the AD5522........................................ 60
Outline Dimensions ....................................................................... 62
Ordering Guide .......................................................................... 63
Rev. F | Page 2 of 64
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