RFM95/96/97/98

Part: RFM95/96/97/98(W) from Hope RF

Type: LoRa Transceiver Module

Key Specs:

• Maximum link budget: 168 dB
• Constant RF output power: +20 dBm (100 mW)
• High efficiency PA output power: +14 dBm
• Programmable bit rate: up to 300 kbps
• High sensitivity: down to -148 dBm
• IIP3: -12.5 dBm
• Low RX current: 10.3 mA
• Register retention current: 200 nA
• Synthesizer resolution: 61 Hz
• Dynamic Range RSSI: 127 dB

Features:

• LoRaTM Modem
• Excellent blocking immunity
• Fully integrated synthesizer
• FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation
• Built-in bit synchronizer for clock recovery
• Preamble detection
• Automatic RF Sense and CAD with ultra-fast AFC
• Packet engine up to 256 bytes with CRC
• Built-in temperature sensor and low battery indicator

Applications:

• Automated Meter Reading
• Home and Building Automation
• Wireless Alarm and Security Systems
• Industrial Monitoring and Control
• Long range Irrigation Systems

Package:

• Module: 16x16mm

• LoRaTM Modem.
• 168 dB maximum link budget.
• +20 dBm 100 mW constant RF output vs. V supply.
• +14 dBm high efficiency PA.
• Programmable bit rate up to 300 kbps.
• High sensitivity: down to -148 dBm.
• Bullet-proof front end: IIP3 = -12.5 dBm.
• Excellent blocking immunity.
• Low RX current of 10.3 mA, 200 nA register retention.
• Fully integrated synthesizer with a resolution of 61 Hz.
• FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
• Built-in bit synchronizer for clock recovery.
• Preamble detection.
• 127 dB Dynamic Range RSSI.
• Automatic RF Sense and CAD with ultra-fast AFC.
• Packet engine up to 256 bytes with CRC.
• Built-in temperature sensor and low battery indicator.
• Modue Size:16*16mm

• Automated Meter Reading.
• Home and Building Automation.
• Wireless Alarm and Security Systems.
• Industrial Monitoring and Control
• Long range Irrigation Systems

• 4.2.13. Packet Mode 66
• 4.2.14. io-homecontrol® Compatibility Mode 74
• 4.3.
  SPI Interface 75
• 1. RFM95/96/97/98(W) Analog & RF Frontend Electronics 76
• 5.1.
  Power Supply Strategy 76
• 5.2.
  Low Battery Detector 76
• 5.3.
  Frequency Synthesis 76
• 5.3.1. Crystal Oscillator 76
• 5.3.2. CLKOUT Output 77
• 5.3.3. PLL 77
• 5.3.4. RC Oscillator 77
• 5.4.
  Transmitter Description 78
• 5.4.1. Architecture Description 78
• 5.4.2. RF Power Amplifiers 78
• 5.4.3. High Power +20 dBm Operation 79
• 5.4.4. Over Current Protection 80
• 5.5.
  Receiver Description 80
• 5.5.1. Overview 80
• 5.5.2. Receiver Enabled and Receiver Active States 80
• 5.5.3. Automatic Gain Control In FSK/OOK Mode 80
• 5.5.4. RSSI in FSK/OOK Mode 81
• 5.5.5. RSSI in LoRaTM Mode 82
• 5.5.6. Channel Filter 82
• 5.5.7. Temperature Measurement 83
• 1. Description of the Registers 84
• 6.1.
  Register Table Summary 84
• 6.2.
  FSK/OOK Mode Register Map 87
• 6.3.
  Band Specific Additional Registers 100
• 6.4.
  LoRaTM Mode Register Map 102
• 1. Application Information 108
• 7.1.
  Crystal Resonator Specification 108
• 7.2.
  Reset of the Chip 108
• 7.2.1. POR 108
• 7.2.2. Manual Reset 109
• 7.3.
  Top Sequencer: Listen Mode Examples 109
• 7.3.1. Wake on Preamble Interrupt 109
• 7.3.2. Wake on SyncAddress Interrupt 112
• 7.4.
  Top Sequencer: Beacon Mode 115
• 7.4.1. Timing diagram 115

• 7.4.2. Sequencer Configuration 115
• 7.5. Example CRC Calculation 117
• 7.6. Example Temperature Reading 118
• 1. Packaging Information 119
• 8.1. Package Outline Drawing 119
• 8.2. Recommended Land Pattern 120

• Table 1. RFM95/96/97/98(W) Device Variants and Key Parameters 10
• Table 2. Absolute Maximum Ratings 12
• Table 3. Operating Range 12
• Table 4. Power Consumption Specification 13
• Table 5. Frequency Synthesizer Specification 13
• Table 6. FSK/OOK Receiver Specification 14
• Table 7. Transmitter Specification 15
• Table 8. LoRa Receiver Specification. 17
• Table 9. Digital Specification 19
• Table 10. Example LoRaTM Modem Performances 22
• Table 11. Range of Spreading Factors 24
• Table 12. Cyclic Coding Overhead 24
• Table 13. LoRaTM Operating Mode Functionality 31
• Table 14. LoRa CAD Consumption Figures 40
• Table 15. DIO Mapping LoRaTM Mode 41
• Table 16. Bit Rate Examples 42
• Table 17. Preamble Detector Settings 48
• Table 18. RxTrigger Settings to Enable Timeout Interrupts 49
• Table 19. Basic Transceiver Modes 50
• Table 20. Receiver Startup Time Summary 51
• Table 21. Receiver Startup Options 54
• Table 22. Sequencer States 55
• Table 23. Sequencer Transition Options 56
• Table 24. Sequencer Timer Settings 58
• Table 25. Status of FIFO when Switching Between Different Modes of the Chip 62
• Table 26. DIO Mapping, Continuous Mode 64
• Table 27. DIO Mapping, Packet Mode 64
• Table 28. CRC Description 72
• Table 29. Power Amplifier Mode Selection Truth Table 78
• Table 30. High Power Settings 79
• Table 31. Operating Range, +20dBm Operation 79
• Table 32. Operating Range, +20dBm Operation 79
• Table 33. Trimming of the OCP Current 80
• Table 34. LNA Gain Control and Performances 81
• Table 35. RssiSmoothing Options 82
• Table 36. Available RxBw Settings 82
• Table 37. Registers Summary 84
• Table 38. Register Map 87
• Table 39. Low Frequency Additional Registers 100

Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for extended periods may affect device reliability.

WIRELESS & SENSING PRELIMINARY DATASHEET

Table 49 Absolute Maximum Ratings

Note Specific ratings apply to +20 dBm operation (see Section 5.4.3).