AD7787 Data Sheet
Rev. A | Page 2 of 20
TABLE OF CONTENTS
Specifications ..................................................................................... 3
Timing Characteristics ..................................................................... 5
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Pin Configuration and Function Descriptions ............................. 8
Typical Performance Characteristics ............................................. 9
On-Chip Registers .......................................................................... 10
Communications Register (RS1, RS0 = 0, 0) .......................... 10
Status Register (RS1, RS0 = 0, 0; Power-On/Reset
= 0×8C) ........................................................................................ 11
Mode Register (RS1, RS0 = 0, 1; Power-On/Reset
= 0×02) ......................................................................................... 12
Filter Register (RS1, RS0 = 1, 0; Power-On/Reset
= 0×04) ......................................................................................... 13
Data Register (RS1, RS0 = 1, 1; Power-On/Reset
= 0×000000) ................................................................................ 13
ADC Circuit Information .............................................................. 14
Overview ..................................................................................... 14
Noise Performance ..................................................................... 14
Reduced Current Modes ........................................................... 14
Digital Interface .......................................................................... 15
Circuit Description......................................................................... 18
Analog Input Channel ............................................................... 18
Bipolar/Unipolar Configuration .............................................. 18
Data Output Coding .................................................................. 18
Reference Input ........................................................................... 18
V
DD
Monitor ................................................................................ 19
Grounding and Layout .............................................................. 19
Applications ................................................................................ 19
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 20
REVISION HISTORY
3/13—Rev. 0 to Rev. A
Changes to Figure 13 ....................................................................... 15
Change to Reference Input Section ............................................... 18
Updated Outline Dimensions ........................................................ 20
Changes to Ordering Guide ........................................................... 20
4/04—Revision 0: Initial Version
