Datasheet

AD7723
Rev. C | Page 2 of 32
TABLE OF CONTENTS
Specifications..................................................................................... 3
Timing Specifications....................................................................... 6
Absolute Maximum Ratings.......................................................... 10
ESD Caution................................................................................ 10
Pin Configuration And Function Descriptions.......................... 11
Ter mi no lo g y .................................................................................... 14
Typical Performance Characteristics ........................................... 15
Circuit Description......................................................................... 18
Applying the AD7723 .................................................................... 20
Analog Input Range ................................................................... 20
Analog Input ............................................................................... 20
Driving the Analog Inputs ........................................................ 20
Applying the Reference.............................................................. 21
Clock Generation ....................................................................... 22
System Synchronization ................................................................ 23
Data Interfacing.............................................................................. 24
Parallel Interface......................................................................... 24
Serial Interface ................................................................................ 25
Two-Channel Multiplexed Operation..................................... 25
Serial Interface to DSPs ................................................................. 27
AD7723 to ADSP-21xx Interface ............................................. 27
AD7723 to SHARC Interface.................................................... 27
AD7723 to DSP56002 Interface ............................................... 27
AD7723 to TMS320C5x Interface............................................ 27
Grounding and Layout .................................................................. 28
Outline Dimensions ....................................................................... 29
Ordering Guide .......................................................................... 29
REVISION HISTORY
5/05—Rev. B to Rev. C
Changes to Format .............................................................Universal
Changes to Figure 6.......................................................................... 8
Changes to System Synchronization............................................ 23
Updated Outline Dimensions....................................................... 29
Changes to the Ordering Guide.................................................... 29
10/03—Rev. A to Rev. B
Changes to Ordering Guide ............................................................ 8
Outline Dimensions Updated....................................................... 23
9/02—Data Sheet changed from Rev. 0 to Rev. A
New TPCs 1 and 2 Added ............................................................. 13
Edits to Figures 17 and 18 ............................................................. 18
Outline Dimensions Updated....................................................... 23