
AD7691
TABLE OF CONTENTS
Features..............................................................................................1
Rev. 0 | Page 2 of 28
Applications.......................................................................................1
Application Diagram........................................................................1
General Description.........................................................................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......................................................................13
Circuit Information....................................................................13
Converter Operation.................................................................. 13
Typical Connection Diagram................................................... 14
Analog Inputs ............................................................................. 15
Driver Amplifier Choice ........................................................... 15
Single-to-Differential Driver .................................................... 16
Voltage Reference Input ............................................................ 16
Power Supply............................................................................... 16
Supplying the ADC from the Reference.................................. 17
Digital Interface.......................................................................... 17
Application Hints ........................................................................... 24
Layout .......................................................................................... 24
Evaluating the AD7691’s Performance.................................... 24
Outline Dimensions....................................................................... 25
Ordering Guide .......................................................................... 25
REVISION HISTORY
7/06—Revision 0: Initial Version