AD7904/AD7914/AD7924
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Circuit Information........................................................................ 18
Converter Operation.................................................................. 18
ADC Transfer Function............................................................. 19
Typical Connection Diagram ................................................... 20
Modes of Operation ....................................................................... 22
Normal Mode (PM1 = PM0 = 1) ............................................. 22
Full Shutdown Mode (PM1 = 1, PM0 = 0) ............................. 22
Auto Shutdown Mode (PM1 = 0, PM0 = 1) ........................... 22
Powering Up the AD7904/AD7914/AD7924......................... 23
Power vs. Throughput Rate........................................................... 25
Serial Interface ............................................................................ 25
Applications Information .............................................................. 27
Microprocessor Interfacing....................................................... 27
Grounding and Layout .............................................................. 28
Outline Dimensions ....................................................................... 29
Ordering Guide .......................................................................... 29
Automotive Products................................................................. 29
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AD7904 Specifications................................................................. 3
AD7914 Specifications................................................................. 5
AD7924 Specifications................................................................. 7
Timing Specifications .................................................................. 9
Absolute Maximum Ratings.......................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Typical Performance Characteristics ........................................... 12
Terminology .................................................................................... 14
Control Register.............................................................................. 15
Sequencer Operation ................................................................. 16
REVISION HISTORY
6/13—Rev. B to Rev. C
2/09—Rev. 0 to Rev. A
Deleted Evaluating AD7904/AD7914/AD7924 Performance
Section.............................................................................................. 29
Changes to Ordering Guide .......................................................... 29
Updated Format..................................................................Universal
Moved Figure 2 ..................................................................................9
Change to Table 5 ........................................................................... 10
Changes to Typical Performance Characteristics Section ........ 12
Moved Terminology Section......................................................... 14
Updated Outline Dimensions....................................................... 30
Changes to Ordering Guide.......................................................... 30
7/11—Rev. A to Rev. B
Changes to Features Section............................................................ 1
Changes to Signal to (Noise + Distortion) (SINAD) Parameter
and Signal-to-Noise Ratio (SNR) Parameter in Table 1 .............. 3
Changes to Signal to (Noise + Distortion) (SINAD) Parameter
and Signal-to-Noise Ratio (SNR) Parameter in Table 2.............. 5
Changes to Signal to (Noise + Distortion) (SINAD) Parameter
and Signal-to-Noise Ratio (SNR) Parameter in Table 3.............. 7
Changes to Table 5.......................................................................... 10
Changes to Ordering Guide .......................................................... 30
Added Automotive Products Section........................................... 30
11/02—Revision 0: Initial Version
Rev. C | Page 2 of 32
ADI [ ADI ]
