SX1276 Transceiver: Datasheet, SX1276 vs. SX1272

The LoRa® long-range modem in the SX1276 transceivers delivers ultra-long-range spread spectrum communication and high interference immunity while consuming minimal current.

SX1276 can reach a sensitivity of over -148 dBm using Semtech's unique LoRa modulation technology with a low-cost crystal and bill of materials. The combination of high sensitivity and an included +20 dBm power amplifier results in an industry-leading link budget, making it ideal for any application needing range or durability.

LoRa also outperforms classic modulation approaches in terms of blocking and selectivity, resolving the traditional design compromise between range, interference immunity, and energy consumption.

For systems like as WMBus and IEEE802.15.4g, these devices additionally enable high-performance (G)FSK modes. The SX1276 outperforms rival devices in terms of phase noise, selectivity, receiver linearity, and IIP3 while consuming much less current.

Semtech Corporation ranks as a leading provider of analogue and mixed-signal semiconductor platforms with high performance and advanced algorithms. They are committed to developing proprietary platforms which differ from each other in size, efficiency, performance, reach, and innovation. They have developed their unique solutions used for innovative systems or products including smartphones, LCD TVs, notebooks, IoT, PON, wireless infrastructure, and other fast-growing markets today.

Š 168 dB maximum link budget 

Š +20 dBm - 100 mW constant RF output vs. V supply 

Š +14 dBm high-efficiency PA 

Š Programmable bit rate up to 300 kbps 

Š High sensitivity: down to -146.5 dBm 

Š Bullet-proof front end: IIP3 = -12 dBm 

Š 100 dB blocking immunity 

Š Low RX current of 10 mA, 200 nA register retention

Š Fully integrated synthesizer with a resolution of 61 Hz

Š FSK, GFSK, MSK, GMSK, LORA and OOK modulations 

Š Built-in bit synchronizer for clock recovery 

Š Sync word recognition 

Š Preamble detection 

Š 115 dB+ Dynamic Range RSSI 

Š Automatic RF Sense with ultra-fast AFC 

Š Packet engine up to 64 bytes with CRC 

Š Built-in temperature sensor and Low Battery indicator

SX1276 Block Diagram

SX1276 Application Circuit