Overview

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

Using Semtech’s patented LoRa modulation technique SX1272/73 can achieve a sensitivity of over -137dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRa 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.

Features

  • LoRa Modem
  • 157dB maximum link budget
  • +20dBm at 100mW constant RF output vs. V supply
  • +14dBm high efficiency PA
  • Programmable bit rate up to 300kbps
  • High sensitivity: down to -137dBm
  • Bullet-proof front end: IIP3 = -12.5dBm
  • 89dB blocking immunity
  • Low RX current of 10mA, 100nA register retention
  • Fully integrated synthesizer with a resolution of 61Hz
  • FSK, GFSK, MSK, GMSK, LoRa and OOK modulation
  • Built-in bit synchronizer for clock recovery
  • Preamble detection
  • 127dB 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

Click diagram to enlarge

Inventory

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