Datasheet

AD7693
Rev. A | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Application Diagram........................................................................ 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-Ended-to-Differential Driver ....................................... 15
Voltage Reference Input ............................................................ 15
Power Supply............................................................................... 15
Supplying the ADC from the Reference.................................. 16
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 AD7693 Performance............................................. 23
Outline Dimensions....................................................................... 24
Ordering Guide .......................................................................... 24
REVISION HISTORY
6/11—Rev. 0 to Rev. A
Changes to Resolution Parameter and Common-Mode Input
Range Parameter in Table 2............................................................. 3
Changes to Figure 6 and Table 6..................................................... 7
Updated Outline Dimensions....................................................... 24
Changes to Ordering Guide .......................................................... 24
12/06—Revision 0: Initial Version