Datasheet
AD5560 Data Sheet
Rev. D | Page 2 of 68
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 3
Functional Block Diagram .............................................................. 4
Specifications ..................................................................................... 5
Timing Characteristics .............................................................. 13
Timing Diagrams ........................................................................ 13
Absolute Maximum Ratings .......................................................... 15
ESD Caution ................................................................................ 15
Pin Configurations and Function Descriptions ......................... 16
Typical Performance Characteristics ........................................... 20
Terminology .................................................................................... 28
Theory of Operation ...................................................................... 29
Force Amplifier ........................................................................... 29
DAC Reference Voltage (VREF) ............................................... 29
Open-Sense Detect (OSD) Alarm and Clamp ....................... 29
Device Under Test Ground (DUTGND)................................. 29
GPO .............................................................................................. 30
Comparators ................................................................................ 30
Current Clamps .......................................................................... 30
Short-Circuit Protection ............................................................ 30
Guard Amplifier ......................................................................... 30
Compensation Capacitors ......................................................... 30
Current Range Selection ............................................................ 31
High Current Ranges ................................................................. 31
Ideal Sequence for Gang Mode ................................................. 32
Compensation for Gang Mode ................................................. 32
System Force/Sense Switches .................................................... 32
Die Temperature Sensor and Thermal Shutdown.................. 33
Measure Output (MEASOUT) ................................................. 33
V
MID
Voltage ................................................................................ 33
Force Amplifier Stability............................................................ 36
Poles and Zeros in a Typical System ........................................ 37
Minimizing the Number of External Compensation
Components ................................................................................ 37
Extra Poles and Zeros in the AD5560 ...................................... 37
Compensation Strategies ........................................................... 38
Optimizing Performance for a Known Capacitor Using
Autocompensation Mode .......................................................... 38
Adjusting the Autocompensation Mode ................................. 39
Dealing with Parallel Load Capacitors .................................... 39
DAC Levels .................................................................................. 39
Force and Comparator DACs ................................................... 39
Clamp DACs ............................................................................... 39
OSD DAC .................................................................................... 40
DUTGND DAC .......................................................................... 40
Offset DAC .................................................................................. 40
Offset and Gain Registers .......................................................... 40
Reference Selection .................................................................... 41
Choosing AV
DD
/AV
SS
Power Supply Rails ............................... 41
Choosing HCAV
SS
x and HCAV
DD
x Supply Rails ................... 41
Power Dissipation....................................................................... 41
Package Composition and Maximum Vertical Force ............ 42
Slew Rate Control ....................................................................... 42
Serial Interface ................................................................................ 44
SPI Interface ................................................................................ 44
SPI Write Mode .......................................................................... 44
SDO Output ................................................................................ 44
RESET
Function ......................................................................... 44
BUSY
Function ........................................................................... 44
LOAD
Function .......................................................................... 44
Register Update Rates ................................................................ 45
Control Registers ............................................................................ 46
DPS and DAC Addressing ........................................................ 46
Readback Mode .......................................................................... 57
DAC Readback............................................................................ 57
Power-On Default ...................................................................... 57
Using the HCAV
DD
x and HC AV
SS
x Supplies .......................... 59
Power Supply Sequencing ......................................................... 59
Required External Components ............................................... 60
Power Supply Decoupling ......................................................... 61
Applications Information .............................................................. 62
Thermal Considerations ............................................................ 62
Temperature Contour Map on the Top of the Package ......... 63
Outline Dimensions ....................................................................... 64
Ordering Guide .......................................................................... 65