Datasheet

AD7401A
Rev. C | 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 .................................................................. 5
Insulation and Safety-Related Specifications............................ 6
Regulatory Information............................................................... 6
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation
Characteristics .............................................................................. 7

Absolute Maximum Ratings............................................................ 8
ESD Caution.................................................................................. 8
Pin Configuration and Function Descriptions............................. 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 14
Circuit Information.................................................................... 14
Analog Input ............................................................................... 14
Differential Inputs...................................................................... 15
Current Sensing Applications................................................... 15
Voltage Sensing Applications.................................................... 15
Digital Filter ................................................................................ 16
Applications Information.............................................................. 18
Grounding and Layout .............................................................. 18
Evaluating the AD7401A Performance................................... 18
Insulation Lifetime..................................................................... 18
Outline Dimensions ....................................................................... 19
Ordering Guide .......................................................................... 19
REVISION HISTORY
7/11—Rev. B to Rev. C
Changes to Minimum External Air Gap (Clearance) Parameter,
Table 3 and Minimum External Tracking (Creepage) Parameter,
Table 3 ................................................................................................ 6
Changes to Figure 5; Pin 1 Description, Table 8; and Pin 7
Description, Table 8.......................................................................... 9
3/11—Rev. A to Rev. B
Change to General Description Section........................................ 1
Changes to Table 1............................................................................ 3
1/11—Rev. 0 to Rev. A
Change to Features, UL Recognition Value ...................................1
Change to Table 3, Input-to-Output Momentary Withstand
Voltage Value...............................................................................................6
Changes to Table 4, Isolation Voltage Value, and Endnote 1.......6
7/08—Revision 0: Initial Version