ADM3251E_VE データシートの表示（PDF） - Analog Devices

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ADM3251E_VE

Isolated, Single-Channel RS-232 Line Driver/Receiver

Analog Devices 

ADM3251E

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Package Characteristics ............................................................... 5

Regulatory Information............................................................... 5

Insulation and Safety-Related Specifications............................ 5

DIN EN 60747-5-2 (VDE 0884 Teil 2): 2003-01 Insulation

Characteristics .............................................................................. 6

Absolute Maximum Ratings............................................................ 7

ESD Caution.................................................................................. 7

Pin Configuration and Function Descriptions............................. 8

Typical Performance Characteristics ............................................. 9

REVISION HISTORY

5/10—Rev. D to Rev. E

Changes to Features Section............................................................ 1

Changes to Table 4............................................................................ 5

3/10—Rev. C to Rev. D

Changes to Features and General Description Sections.............. 1

Changes to Table 4 and Table 5....................................................... 5

Changed DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

Insulation Characteristics (Pending) Heading to DIN EN

60747-5-2 (VDE 0884 Teil 2): 2003-01 Insulation

Characteristics................................................................................... 6

Changes to Pollution Degree and Input–to-Output Test

Voltage Parameters, Table 6............................................................. 6

Added Applications Information Section and Example PCB

for Reduced EMI Section .............................................................. 13

Added Table 9 and Table 10; Renumbered Sequentially ........... 13

Changes to PCB Layout Section ................................................... 13

Added Isolated Power Supply Circuit Section ............................ 14

Added Figure 22; Renumbered Sequentially .............................. 14

1/10—Rev. B to Rev. C

Changes to Table 4............................................................................ 5

Theory of Operation ...................................................................... 11

Isolation of Power and Data...................................................... 11

Charge Pump Voltage Converter ............................................. 12

5.0 V Logic to EIA/TIA-232E Transmitter.............................. 12

EIA/TIA-232E to 5 V Logic Receiver ...................................... 12

High Baud Rate........................................................................... 12

Thermal Analysis ....................................................................... 12

Insulation Lifetime ..................................................................... 12

Applications Information .............................................................. 13

PCB Layout ................................................................................. 13

Example PCB for Reduced EMI ............................................... 13

Isolated Power Supply Circuit .................................................. 14

Outline Dimensions ....................................................................... 15

Ordering Guide .......................................................................... 15

11/09—Rev. A to Rev. B

Changes to Figure 1...........................................................................1

Changed to Primary Side Supply Input Current, ICC(DISABLE)

Maximum Limit to 2.5 mA ..............................................................4

Changes to Table 4.............................................................................5

Changes to Figure 13...................................................................... 11

9/08—Rev. 0 to Rev. A

Changes to Timing Parameters in Table 1 .....................................3

Changes to Timing Parameters in Table 2 .....................................4

Changes to Ordering Guide .......................................................... 14

7/08—Revision 0: Initial Version

Rev. E | Page 2 of 16

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