AD5522JSVDZ datasheet(3/65 Pages) AD

3 / 65 page

AD5522

Data Sheet

Rev. E | Page 2 of 64

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

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

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

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