AD7400 Data Sheet
Rev. G | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Specifications .................................................................. 4
Insulation and Safety-Related Specifications ............................ 5
Regulatory Information ............................................................... 5
DIN V VDE V 0884-10 (VDE V 0884-10) Insulation
Characteristics .............................................................................. 6
Absolute Maximum Ratings ............................................................ 7
ESD Caution .................................................................................. 7
Pin Configuration and Function Descriptions ............................. 8
Typical Performance Characteristics ..............................................9
Terminology .................................................................................... 12
Theory of Operation ...................................................................... 13
Circuit Information .................................................................... 13
Analog Input ............................................................................... 13
Differential Inputs ...................................................................... 14
Digital Filter ................................................................................ 15
Applications Information .............................................................. 17
Grounding and Layout .............................................................. 17
Evaluating the AD7400 Performance ...................................... 17
Insulation Lifetime ..................................................................... 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 18
REVISION HISTORY
6/13—Rev. F to Rev. G
Changes to Figure 12 and Figure 13 ............................................. 10
3/12—Rev. E to Rev. F
Changed I
DD1
Parameter from 12 mA to 13 mA, Table 1 ............ 3
7/11—Rev. D to Rev. E
Changes to Minimum External Air Gap (Clearance) Parameter,
Table 3 and Minimum External Tracking (Creepage) Parameter,
Table 3 ................................................................................................ 5
Changes to Figure 5; Pin 1 Description, Table 8; and Pin 7
Description, Table 8 .......................................................................... 8
4/11—Rev. C to Rev. D
Changes to Dynamic Input Current Parameter, Table 1 ............. 3
1/11—Rev. B to Rev. C
Changes to Features Section............................................................ 1
Changes to Input-to-Output Momentary Withstand Voltage
Parameter, Table 3, UL Column, Table 4, and Note 1, Table 4 .......... 5
Changes to Ordering Guide ..................................................................... 18
9/07—Rev. A to Rev. B
Updated VDE Certification Throughout ...................................... 1
Changes to Table 6 ............................................................................. 7
12/06—Rev. 0 to Rev. A
Changes to Features .......................................................................... 1
Changes to Table 6 ............................................................................. 7
Changes to Analog Input Section ................................................. 13
Changes to Figure 26 ...................................................................... 15
1/06—Revision 0: Initial Version