Datasheet
Table Of Contents
- 1. General Description
- 2. Electrical Characteristics
- 3. SX1272/73 Features
- 4. SX1272/73 Digital Electronics
- 4.1. The LoRaTM Modem
- 4.2. FSK/OOK Modem
- 4.2.1. Bit Rate Setting
- 4.2.2. FSK/OOK Transmission
- 4.2.3. FSK/OOK Reception
- 4.2.4. Operating Modes in FSK/OOK Mode
- 4.2.5. General Overview
- 4.2.6. Startup Times
- 4.2.7. Receiver Startup Options
- 4.2.8. Receiver Restart Methods
- 4.2.9. Top Level Sequencer
- 4.2.10. Data Processing in FSK/OOK Mode
- 4.2.11. FIFO
- 4.2.12. Digital IO Pins Mapping
- 4.2.13. Continuous Mode
- 4.2.14. Packet Mode
- 4.2.15. io-homecontrol® Compatibility Mode
- 4.3. SPI Interface
- 5. SX1272/73 Analog & RF Frontend Electronics
- 6. Description of the Registers
- 7. Application Information
- 8. Packaging Information
- 9. Revision History
www.semtech.comPage 11
SX1272/73
WIRELESS, SENSING & TIMING DATASHEET
Rev. 2 - July 2014
©2014 Semtech Corporation
1.2. Product Versions
The features of the two product variants SX1272 and SX1273 are detailed in the following table.
Table 1 SX1272/73 Device Variants and Key Parameters
1.3. Pin Diagram
The following diagram shows the pin arrangement of the QFN package, top view.
Figure 2. Pin Diagram
Part Number Frequency Range
LoRa
TM
Parameters
Spreading Factor Bandwidth Effective Bitrate Sensitivity
SX1272 860 - 1020 MHz 6 - 12 125 - 500 kHz 0.24 - 37.5 kbps -117 to -137 dBm
SX1273 860 - 1020 MHz 6 - 9 125 - 500 kHz 1.7 - 37.5 kbps -117 to -130 dBm