RF ISM Transceivers
  • SX1276
  • 137-1050 MHz Ultra Low Power Long Range Transceiver
  • SX1236
  • 137 MHz to 1020 MHz Low Power Bi-Band Transceiver
  • SX1238
  • SX1238 - Fully Integrated Transceiver with +27dBm TX Power
  • SX1301
  • Base Band Processor for Data Concentrator for Long Range Communication Network
  • SX1235
  • ETSI Category 1 Compliant RF Transceiver
  • SX1232
  • Ultra Low Power (9.3mA RX) High Performance RF Transceiver
  • SX1211
  • Ultra Low Power (3mA RX) RF Transceiver 862-960MHz
  • SX1212
  • Ultra Low Power (3mA RX) RF Transceiver 310-510MHz
Semtech SX1272

Semtech SX1272

Long Range, Low Power RF Transceiver 860-1000MHz with LoRa(TM)

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The SX1272/73 transceivers feature the LoRa™ long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.

Using Semtech’s patented LoRa™ modulation technique SX1272/73 can achieve a sensitivity of over -137 dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRaTM also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity and energy consumption.


  • LoRa™ Modem
  • 157 dB maximum link budget
  • +20 dBm at 100 mW constant RF output vs. V supply
  • +14 dBm high efficiency PA
  • Programmable bit rate up to 300 kbps
  • High sensitivity: down to -137 dBm
  • Bullet-proof front end: IIP3 = -12.5 dBm
  • 89 dB blocking immunity
  • Low RX current of 10 mA, 100 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


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


  • QFN 28

Order Codes

  • SX1272IMLTRT - Pb-free, Halogen free, RoHS/WEEE compliant product
  • SX1273IMLTRT-  Pb-free, Halogen free, RoHS/WEEE compliant product
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