SX1276IMLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

Manufacturer

SX1276IMLTRT

137 MHz to 1020 MHz Low Power Long Range Transceiver

Semtech Corporation 

SX1276/77/78/79

WIRELESS, SENSING & TIMING

DATASHEET

All major parameters of the RF front end and digital state machine are fully configurable via an SPI interface which gives

access to SX1276/77/78/79’s configuration registers. This includes a mode auto sequencer that oversees the transition

and calibration of the SX1276/77/78/79 between intermediate modes of operation in the fastest time possible.

The SX1276/77/78/79 are equipped with both standard FSK and long range spread spectrum (LoRaTM) modems.

Depending upon the mode selected either conventional OOK or FSK modulation may be employed or the LoRaTM spread

spectrum modem.

3.1. LoRaTM Modem

The LoRaTM modem uses a proprietary spread spectrum modulation technique. This modulation, in contrast to legacy

modulation techniques, permits an increase in link budget and increased immunity to in-band interference. At the same

time the frequency tolerance requirement of the crystal reference oscillator is relaxed - allowing a performance increase for

a reduction in system cost. For a detailed description of the design trade-offs and operation of the SX1276/77/78/79 please

consult Section 4.1 of the datasheet.

3.2. FSK/OOK Modem

In FSK/OOK mode the SX1276/77/78/79 supports standard modulation techniques including OOK, FSK, GFSK, MSK and

GMSK. The SX1276/77/78/79 is especially suited to narrow band communication thanks the low-IF architecture employed

and the built-in AFC functionality. For full information on the FSK/OOK modem please consult Section 4.2 of this document.

Rev. 4 - March 2015

©2015 Semtech Corporation

Page 24

www.semtech.com

Share Link: