Data Sheet

ManualsBrandsLaird Connectivity ManualsElectronics902 - 928 MHz FHSS, 0 - 1 W, MMCX / 902 - 928 MHz FHSS, 0 - 1 W, MMCX, Long Range

AC4790

Datasheet

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CONTENTS

1 AC4790 Transceiver ............................................................................................................................................................ 5

1.1 Overview .................................................................................................................................................................... 5

1.2 Features ..................................................................................................................................................................... 5

2 Detailed Specifications ........................................................................................................................................................ 6

3 Electrical Specifications ....................................................................................................................................................... 8

4 Hardware ............................................................................................................................................................................. 9

4.1 AC4790 Pinout ........................................................................................................................................................... 9

4.2 Detailed Pin Definitions ............................................................................................................................................ 10

5 Serial Interface .................................................................................................................................................................. 13

5.1 Serial Communications ............................................................................................................................................ 13

5.2 Asynchronous Operation .......................................................................................................................................... 13

5.3 Parity ........................................................................................................................................................................ 13

5.4 OEM Host Data Rate ................................................................................................................................................ 14

5.5 Serial Interface Baud Rate ....................................................................................................................................... 14

6 AC4790 Mechanical and Layout ........................................................................................................................................ 15

6.1 Mechanical Drawings ............................................................................................................................................... 15

7 Output Power..................................................................................................................................................................... 19

8 Timing Diagrams ............................................................................................................................................................... 21

9 Ordering Information .......................................................................................................................................................... 23

9.1 Product Marketing Name .......................................................................................................................................... 23

9.2 Developer Kit Part Numbers ..................................................................................................................................... 23

10 Compliance Information ..................................................................................................................................................... 23

10.1 AC4790 – 1X1 .......................................................................................................................................................... 23

10.2 Agency Identification Numbers ................................................................................................................................. 23

10.3 Approved Antenna List ............................................................................................................................................. 24

10.4 FCC Requirements for Modular Approval ................................................................................................................ 24

10.5 ISED Requirements for Modular Approval ............................................................................................................... 26

10.6 Antenna Requirements ............................................................................................................................................. 27

10.7 Channel Warning ..................................................................................................................................................... 28

11 Revision 2.0 Hardware (AC4790-1000M, AC4790LR-1000M) .......................................................................................... 28

12 Appendix I: 5V to 3.3V Levels............................................................................................................................................ 28

12.1 Voltage Level Conversion IC’s ................................................................................................................................. 28

12.2 Passive Resistor Voltage Divider ............................................................................................................................. 28

13 Appendix II: Sample Power Supply ................................................................................................................................... 29

13.1 Bill of Materials ......................................................................................................................................................... 29

13.2 Schematic ................................................................................................................................................................ 30