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AD5522 Fiches technique(PDF) 2 Page - Analog Devices

No de pièce AD5522
Description  Quad Parametric Measurement Unit with Integrated 16-Bit Level Setting DACs
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD5522 Fiches technique(HTML) 2 Page - Analog Devices

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AD5522
Rev. A | Page 2 of 60
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 .................................................................................... 28
 
Theory of Operation ...................................................................... 29
 
Force Amplifier........................................................................... 29
 
Comparators................................................................................ 29
 
Clamps ......................................................................................... 29
 
Current Range Selection............................................................ 30
 
High Current Ranges ................................................................. 30
 
Measure Current Gains.............................................................. 31
 
VMID Voltage............................................................................. 31
 
Choosing Power Supply Rails ................................................... 32
 
Measure Output (MEASOUTx Pins) ...................................... 32
 
Device Under Test Ground (DUTGND)................................. 32
 
Guard Amplifier ......................................................................... 33
 
Compensation Capacitors ......................................................... 33
 
System Force and Sense Switches............................................. 33
 
Temperature Sensor ................................................................... 33
 
DAC Levels ...................................................................................... 34
 
Offset DAC .................................................................................. 34
 
Gain and Offset Registers.......................................................... 34
 
Cached X2 Registers................................................................... 35
 
Reference Voltage (VREF)......................................................... 35
 
Reference Selection .................................................................... 35
 
Calibration................................................................................... 36
 
System Level Calibration........................................................... 37
 
Circuit Operation ........................................................................... 38
 
Force Voltage (FV) Mode .......................................................... 38
 
Force Current (FI) Mode........................................................... 39
 
Serial Interface ................................................................................ 40
 
SPI Interface ................................................................................ 40
 
LVDS Interface............................................................................ 40
 
Serial Interface Write Mode...................................................... 40
 
RESET Function ......................................................................... 40
 
BUSY and LOAD Functions ..................................................... 40
 
Register Update Rates ................................................................ 41
 
Register Selection ....................................................................... 41
 
Write System Control Register ................................................. 43
 
Write PMU Register................................................................... 45
 
Write DAC Register ................................................................... 47
 
Read Registers............................................................................. 50
 
Readback of System Control Register...................................... 51
 
Readback of PMU Register ....................................................... 52
 
Readback of Comparator Status Register................................ 53
 
Readback of Alarm Status Register .......................................... 53
 
Readback of DAC Register........................................................ 54
 
Applications Information .............................................................. 55
 
Power-On Default ...................................................................... 55
 
Setting Up the Device on Power-On ....................................... 55
 
Changing Modes ........................................................................ 56
 
Required External Components............................................... 56
 
Power Supply Decoupling ......................................................... 57
 
Power Supply Sequencing ......................................................... 57
 
Typical Application for the AD5522........................................ 57
 
Outline Dimensions ....................................................................... 59
 
Ordering Guide .......................................................................... 60
 


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