Datasheet

ManualsBrandsANALOG DEVICES ManualsDev KitsPCB design board

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