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Manufacturer Part #


SX1273 Series 860 to 1050 MHz 300 kbps Ultra Low Power Long Range Transceiver

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Mfr. Name: Semtech
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Product Specification Section
Technical Attributes
Attributes Table
Frequency Range: 860MHz to 1020MHz
Data Rate: 1.2kbps to 300kbps
Output Power: 20dBm
Supply Voltage: 1.8V to 3.7V
Sensitivity: -137dBm
Supply Current: 125mA
Operating Temp Range: -40°C to +85°C
No of Terminals: 28
Package Style:  QFN-28
Mounting Method: Surface Mount
Features & Applications

The SX1273IMLTRT is ultra low power transceiver, provides ultra long range while maintaining low current consumption making it optimal for numerous applications. With modulation technique it can achieve sensitivity of over -138.5 dBm using a low cost crystal.

The high sensitivity combined with the integrated +20 dBm power amplifier creates the highest link budget making it optimal for any application requiring range. This modulation technique also provides significant advantages in blocking and selectivity over FSK.


  • 158 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 -138.5 dBm
  • Bullet-proof front end: IIP3 = -12 dBm with FSK
  • 100 dB blocking immunity
  • Low RX current of 10 mA, 200 nA register retention
  • Fully integrated synthesizer with a resolution of 61 Hz
  • FSK, GFSK, MSK, GMSK, LORA and OOK modulations
  • Built-in bit synchronizer for clock recovery
  • Sync word recognition
  • Preamble detection
  • 115 dB+ Dynamic Range RSSI
  • Automatic RF Sense with ultra-fast AFC
  • Packet engine up to 64 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

View the available list of long range transceiver

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