Datasheet

AD7904/AD7914/AD7924 Data Sheet
Rev. C | Page 2 of 32
TABLE OF CONTENTS
Features .............................................................................................. 1
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
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
REVISION HISTORY
6/13—Rev. B to Rev. C
Deleted Evaluating AD7904/AD7914/AD7924 Performance
Section .............................................................................................. 29
Changes to Ordering Guide .......................................................... 29
7/11Rev. 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
2/09Rev. 0 to Rev. A
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
11/02Revision 0: Initial Version