Datasheet

AD7988-1/AD7988-5 Data Sheet
Rev. D | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Application Diagram .......................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 5
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Pin Configurations and Function Descriptions ........................... 8
Terminology ...................................................................................... 9
Typical Performance Characteristics ........................................... 10
Theory of Operation ...................................................................... 14
Circuit Information .................................................................... 14
Converter Operation .................................................................. 14
Typical Connection Diagram ................................................... 15
Analog Inputs ............................................................................. 16
Driver Amplifier Choice ........................................................... 16
Voltage Reference Input ............................................................ 17
Power Supply ............................................................................... 17
Digital Interface .......................................................................... 17
CS
Mode, 3-Wire ........................................................................ 18
CS
Mode 4-Wire ......................................................................... 19
Chain Mode ................................................................................ 20
Applications Information .............................................................. 21
Interfacing to Blackfin® DSP ..................................................... 21
Layout .......................................................................................... 21
Evaluating the Performance of the AD7988-x ........................ 21
Outline Dimensions ....................................................................... 22
Ordering Guide .......................................................................... 23
REVISION HISTORY
8/13—Rev. C to Rev. D
Changes to Features Section............................................................ 1
Changes to Table 3 ............................................................................ 4
Updated Outline Dimensions ....................................................... 22
Changes to Ordering Guide .......................................................... 23
8/12—Rev. B to Rev. C
Changes to Ordering Guide .......................................................... 23
5/12—Rev. A to Rev. B
Changes to Table 3 ............................................................................ 4
Updated Outline Dimensions ....................................................... 22
2/12—Rev. 0 to Rev. A
Added LFCSP Thermal Impedance Values ................................... 7
Updated Outline Dimensions ....................................................... 23
Changes to Ordering Guide .......................................................... 23
2/12—Revision 0: Initial Versi on