AD7276/AD7277/AD7278
TABLE OF CONTENTS
Features .............................................................................................. 1
Theory of Operation ...................................................................... 16
Circuit Information.................................................................... 16
Converter Operation.................................................................. 16
ADC Transfer Function............................................................. 16
Typical Connection Diagram ................................................... 16
Modes of Operation................................................................... 18
Power vs. Throughput Rate....................................................... 21
Serial Interface ................................................................................ 22
AD7278 in a 10 SCLK Cycle Serial Interface.......................... 24
Microprocessor Interfacing....................................................... 24
Application Hints ........................................................................... 25
Grounding and Layout .............................................................. 25
Evaluating Performance.............................................................. 25
Outline Dimensions....................................................................... 26
Ordering Guide .......................................................................... 27
General Description......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AD7276 Specifications................................................................. 3
AD7277 Specifications................................................................. 5
AD7278 Specifications................................................................. 7
Timing Specifications—AD7276/AD7277/AD7278 ............... 8
Timing Examples........................................................................ 10
Absolute Maximum Ratings.......................................................... 11
ESD Caution................................................................................ 11
Pin Configurations and Function Descriptions ......................... 12
Typical Performance Characteristics ........................................... 13
Terminology .................................................................................... 15
REVISION HISTORY
5/11—Rev. B to Rev. C
Changes to Figure 21...................................................................... 16
Changes to Ordering Guide .......................................................... 27
Changes to Endnote 5 .................................................................... 27
11/09—Rev. A to Rev. B
Changes to Table 2............................................................................ 3
Changes to Table 3............................................................................ 5
Changes to Table 4............................................................................ 7
Changes to Ordering Guide .......................................................... 27
10/05—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Changes to Table 2............................................................................ 3
Changes to Table 5............................................................................ 8
Changes to the Partial Power-Down Mode Section .................. 18
Changes to the Power vs. Throughput Rate Section.................. 21
Updated Outline Dimensions....................................................... 26
Changes to Ordering Guide .......................................................... 26
7/05—Revision 0: Initial Version
Rev. C | Page 2 of 28
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