SX1235IMLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1235IMLTRT

EN300 220 Category 1 Compliant Transceiver

Semtech Corporation 

SX1235

WIRELESS & SENSING

DATASHEET

List of Tables

Table 1. SX1235 Pinouts .............................................................................................................................................. 12

Table 2. Absolute Maximum Ratings ............................................................................................................................ 13

Table 3. Operating Range ............................................................................................................................................ 13

Table 4. Absolute Performance of the SX1235 Reference Design. .............................................................................. 14

Table 5. SX1235 Reference Design Regulatory Margin to the Category 1 Test Limits. ............................................... 15

Table 6. Power Consumption Specification .................................................................................................................. 18

Table 7. Frequency Synthesizer Specification .............................................................................................................. 18

Table 8. Receiver Specification .................................................................................................................................... 19

Table 9. Transmitter Specification ................................................................................................................................ 20

Table 10. Digital Specification ...................................................................................................................................... 21

Table 11. Bit Rate Examples ........................................................................................................................................ 28

Table 12. Power Amplifier Mode Selection Truth Table ............................................................................................... 29

Table 13. High Power Settings ..................................................................................................................................... 30

Table 14. Absolute Maximum Rating, +20 dBm Operation .......................................................................................... 30

Table 15. Operating Range, +20dBm Operation .......................................................................................................... 30

Table 16. Trimming of the OCP Current ....................................................................................................................... 31

Table 17. LNA Gain Control and Performances ........................................................................................................... 32

Table 18. RssiSmoothing Options ................................................................................................................................ 34

Table 19. Available RxBw Settings ............................................................................................................................... 34

Table 20. Preamble Detector Settings .......................................................................................................................... 39

Table 21. RxTrigger Settings to Enable Timeout Interrupts .......................................................................................... 41

Table 22. Basic Transceiver Modes ............................................................................................................................. 42

Table 23. Receiver Startup Time Summary .................................................................................................................. 43

Table 24. Receiver Startup Options ............................................................................................................................. 46

Table 25. Sequencer States ......................................................................................................................................... 48

Table 26. Sequencer Transition Options ...................................................................................................................... 49

Table 27. Sequencer Timer Settings ............................................................................................................................ 50

Table 28. Status of FIFO when Switching Between Different Modes of the Chip ......................................................... 55

Table 29. DIO Mapping, Continuous Mode .................................................................................................................. 57

Table 30. DIO Mapping, Packet Mode ......................................................................................................................... 57

Table 31. CRC Description .......................................................................................................................................... 65

Table 32. Registers Summary ...................................................................................................................................... 68

Table 33. Register Map ................................................................................................................................................ 71

Table 34. Crystal Specification ..................................................................................................................................... 85

Table 35. Listen Mode with PreambleDetect Condition Settings .................................................................................. 90

Table 36. Listen Mode with PreambleDetect Condition Recommended DIO Mapping ................................................ 91

Table 37. Listen Mode with SyncAddress Condition Settings ...................................................................................... 93

Table 38. Listen Mode with PreambleDetect Condition Recommended DIO Mapping ................................................ 93

Table 39. Beacon Mode Settings ................................................................................................................................. 95

Table 40. Category 1 Narrowband Filter Settings for SX1235 ...................................................................................... 99

Table 41. SX1235 Image and Intermediate Frequency Values. ................................................................................. 100

Rev 1 - December 2012

Page 8

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