Datasheet

AD7264 Data Sheet
Rev. B | Page 2 of 28
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 14
Theory of Operation ...................................................................... 15
Circuit Information .................................................................... 15
Comparators ................................................................................ 15
Operation ..................................................................................... 15
Analog Inputs .............................................................................. 15
V
DRIVE
............................................................................................ 16
Reference ..................................................................................... 16
Typical Connection Diagrams .................................................. 17
Application Details ..................................................................... 19
Modes of Operation ....................................................................... 20
Pin Driven Mode ........................................................................ 20
Gain Selection ............................................................................. 20
Power-Down Modes .................................................................. 20
Control Register ......................................................................... 21
On-Chip Registers ...................................................................... 22
Serial Interface ................................................................................ 23
Calibration ....................................................................................... 25
Internal Offset Calibration ........................................................ 25
Adjusting the Offset Calibration Register ............................... 26
System Gain Calibration............................................................ 26
Application Hints ........................................................................... 27
Grounding and Layout .............................................................. 27
PCB Design Guidelines for LFCSP .......................................... 27
Outline Dimensions ....................................................................... 28
Ordering Guide .......................................................................... 28
REVISION HISTORY
11/12—Rev. A to Rev. B
Changes to Digital Input Voltage to DGND Parameter, Table 3 ...... 7
Updated Outline Dimensions ................................................................. 28
7/08—Rev. 0 to Rev. A
Added AD7264-5 ................................................................ Universal
Added LQFP Package ......................................................... Universal
Changes to Figure 1 .......................................................................... 1
Changes to Common-Mode Voltage Range, V
CM
Parameter ..... 3
Changes to Table 3 ............................................................................ 7
Changes to Pin Configuration and Function
Description Section .......................................................................... 8
Changes to Figure 29 ...................................................................... 19
Updated Outline Dimensions ....................................................... 28
Changes to Ordering Guide .......................................................... 29
5/08—Revision 0: Initial Version