SX1280/SX1281 Long Range, Low Power, 2.4 GHz Transceiver with Ranging Capability Analog Front End & Data Conversion LORA Modem & Ranging Protocol LNA ADC Engine FLRC Modem SPI or UART Match PA PLL Data FSK Buffer Modem OSC DC-DC LDO Figure A: Transceiver Block Diagram General Description Key Features The SX1280/1 transceiver family provides ultra long range Long Range 2.4 GHz transceiver communication in the 2.4 GHz band with the linearity to High sensitivity, down to -132 dBm withstand heavy interference. This makes them the ideal +12.5 dBm, high efficiency PA solution for robust and reliable wireless solutions. They are Low energy consumption, on-chip DC-DC the first ISM band transceiver IC of their kind to integrate a LoRa, FLRC, (G)FSK supported modulations time-of-flight functionality, opening up application solutions to track and localize assets in logistic chains and Programmable bit rate people for safety. These long range 2.4 GHz products Excellent blocking immunity include multiple physical layers and modulations to Standard & Advanced Ranging Engine, Time-of-Flight optimize long range communication at high data rate for BLE PHY layer compatibility video and security applications. Very small products for wearables can easily be designed thanks to the high level Low system cost of integration and the ultra-low current consumption which allows the use of miniaturized batteries. Applications The radio is fully compliant with all worldwide 2.4 GHz Home automation & appliances radio regulations including EN 300 440, FCC CFR 47 Part 15 IIoT Asset Management and Safety and the Japanese ARIB STD-T66. Logistics Tracking applications The level of integration, low consumption and ranging Sports /Fitness sensors and smart watches functions within the long range 2.4 GHz product line Radio-controlled toys & drones enable enhanced connectivity and provide additional Agriculture functionality to a new generation of previously unconnected devices and applications. Healthcare SX1280/SX1281 1 of 158 www.semtech.com Data Sheet Rev 3.2 Semtech DS.SX1280-1.W.APP March 2020 Ordering Information Part Number Delivery Order Quantity SX1280IMLTRT Tape & Reel 3000 pieces SX1281IMLTRT Tape & Reel 3000 pieces QFN 24 Package, with the temperature operating range from -40 to 85C Pb-free, Halogen free, RoHS/WEEE compliant product Revision History Version ECO Date Changes and/or Modifications Rev 1.0 035543 February 2017 First Release Added table of effective data rates for the LoRa Modem Correction of the formulas for time-on-air in LoRa Correction of typos in the chapter Host Controller Interface Rev 1.1 037029 May 2017 Update of the application schematic with optional TCXO Update of the reference design BOM Deletion of redundant information in the chapter Thermal Impedance The maximum SPI clock speed is reduced to 18 MHz Addition of a note in chapter 6.2.3Bandwidt on SF and BW to be known in advance Addition of chapter 6.2.6Frequency Erro Addition of calculations of time-on-air in chapter 7.5LoRa Ranging Engine Packe Addition of examples of SPI communication in chapter 11Host Controller Interfac Rev 2.0 040575 February 2018 Update of explanation on SetAutoTx in chapter 13.2.4BLE Specific Function Update of ranging results description in chapter 13.5Ranging Operatio Addition of an explanation of the Reference Design in chapter 14.1Reference Desig Addition of the tape and reel specifications in chapter 15Packaging Informatio Addition of LoRa and Bluetooth trademark information Maximum RF input power (ML) is now 0 dBm Phase noise at 2.45 GHz with 1 MHz offset (PHN) is now -115 dBc/Hz Correction of minor typographical errors in tables 6-5, 6-7, 13-20 and in chapter 7.2 Rev 2.1 041639 April 2018 Addition of formulas for ranging duration in chapter 7.5.4 Addition of description of RSSI packet for LoRa when SNR 0 in table 11-64 Correction of package thickness to 0.9 mm in chapter 15.1 Addition of package marking in chapter 15.2 SX1280/SX1281 2 of 158 www.semtech.com Data Sheet Rev 3.2 Semtech DS.SX1280-1.W.APP March 2020