Datasheet

AD7982 Data Sheet
Rev. B | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Application Diagram Example........................................................ 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 5
Absolute Maximum Ratings ............................................................ 6
ESD Caution .................................................................................. 6
Pin Configurations and Function Descriptions ........................... 7
Terminology ...................................................................................... 8
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 12
Circuit Information .................................................................... 12
Converter Operation .................................................................. 12
Typical Connection Diagram.................................................... 13
Analog Inputs .............................................................................. 14
Driver Amplifier Choice ........................................................... 14
Single-to-Differential Driver .................................................... 15
Voltage Reference Input ............................................................ 15
Power Supply ............................................................................... 15
Digital Interface .......................................................................... 16
CS
Mode, 3-Wire Without Busy Indicator ............................. 17
CS
Mode, 3-Wire with Busy Indicator .................................... 18
CS
Mode, 4-Wire Without Busy Indicator ............................. 19
CS
Mode, 4-Wire with Busy Indicator .................................... 20
Chain Mode Without Busy Indicator ...................................... 21
Chain Mode with Busy Indicator ............................................. 22
Application Hints ........................................................................... 23
Layout .......................................................................................... 23
Evaluating AD7982 Performance ............................................. 23
Outline Dimensions ....................................................................... 24
Ordering Guide .......................................................................... 24
REVISION HISTORY
7/13Rev. A to Rev. B
Added Low Power Dissipation of 4 mW at 1 MSPS (VDD only)
to Features Section ............................................................................ 1
Changes to Power Dissipation; Table 3 .......................................... 4
Added EPAD Notation to Figure 5 and Table 6............................ 7
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 24
10/07Rev. 0 to Rev. A
Changes to Table 1 and Layout ........................................................ 1
Changes to Table 2 ............................................................................. 3
Changes to Layout ............................................................................. 5
Changes to Layout ............................................................................. 6
Changes to Figure 5 ........................................................................... 7
Changes to Figure 18 and Figure 20 ............................................ 11
Changes to Figure 23 ...................................................................... 13
Changers to Figure 26 .................................................................... 15
Changes to Digital Interface Section ........................................... 16
Changes to Figure 38 ...................................................................... 21
Changes to Figure 40 ...................................................................... 22
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 24
3/07Revision 0: Initial Version