SX1276 Ver la hoja de datos (PDF) - Semtech Corporation

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componentes Descripción

Fabricante

SX1276

137 MHz to 1020 MHz Low Power Long Range Transceiver

Semtech Corporation 

SX1276/77/78/79

WIRELESS, SENSING & TIMING

Table of contents

Section

DATASHEET

Page

Table 1. SX1276/77/78/79 Device Variants and Key Parameters .................................................................................10

Table 2. Pin Description ................................................................................................................................................11

Table 3. Absolute Maximum Ratings .............................................................................................................................13

Table 4. Operating Range .............................................................................................................................................13

Table 5. Thermal Properties ..........................................................................................................................................13

Table 6. Power Consumption Specification ...................................................................................................................14

Table 7. Frequency Synthesizer Specification ..............................................................................................................14

Table 8. FSK/OOK Receiver Specification ....................................................................................................................16

Table 9. Transmitter Specification .................................................................................................................................17

Table 10. LoRa Receiver Specification .........................................................................................................................19

Table 11. Digital Specification .......................................................................................................................................22

Table 12. Example LoRaTM Modem Performances, 868MHz Band .............................................................................25

Table 13. Range of Spreading Factors ..........................................................................................................................27

Table 14. Cyclic Coding Overhead ................................................................................................................................27

Table 15. LoRa Bandwidth Options ...............................................................................................................................28

Table 16. LoRaTM Operating Mode Functionality .........................................................................................................36

Table 17. LoRa CAD Consumption Figures ..................................................................................................................45

Table 18. DIO Mapping LoRaTM Mode .........................................................................................................................46

Table 19. Bit Rate Examples .........................................................................................................................................47

Table 20. Preamble Detector Settings ...........................................................................................................................53

Table 21. RxTrigger Settings to Enable Timeout Interrupts ..........................................................................................54

Table 22. Basic Transceiver Modes ..............................................................................................................................54

Table 23. Receiver Startup Time Summary ..................................................................................................................57

Table 24. Receiver Startup Options ..............................................................................................................................60

Table 25. Sequencer States ..........................................................................................................................................61

Table 26. Sequencer Transition Options .......................................................................................................................62

Table 27. Sequencer Timer Settings .............................................................................................................................63

Table 28. Status of FIFO when Switching Between Different Modes of the Chip .........................................................67

Table 29. DIO Mapping, Continuous Mode ...................................................................................................................69

Table 30. DIO Mapping, Packet Mode ..........................................................................................................................69

Table 31. CRC Description ...........................................................................................................................................77

Table 32. Frequency Bands ..........................................................................................................................................82

Table 33. Power Amplifier Mode Selection Truth Table ................................................................................................83

Table 34. High Power Settings ......................................................................................................................................84

Table 35. Operating Range, +20dBm Operation ...........................................................................................................84

Table 36. Operating Range, +20dBm Operation ...........................................................................................................84

Table 37. Trimming of the OCP Current ........................................................................................................................85

Table 38. LNA Gain Control and Performances ............................................................................................................86

Table 39. RssiSmoothing Options .................................................................................................................................86

Rev. 4 - March 2015

©2015 Semtech Corporation

Page 5

www.semtech.com

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