LoRa Semtech RF Transmission Shield SX1276MB1MAS-ND

The SX1276 transceiver features 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 the SX1276 can achieve a sensitivity of over -148dBm 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. 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. The device also support high performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The SX1276 delivers exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices. The SX1276 is intended for applications over a wide frequency range and is covering all available sub-GHz frequency bands (168MHz, 434MHz, 470MHz, 868MHz and 902MHz). The SX1276 really offers the possibility of two modems in one single package and complies with both ETSI and FCC regulatory requirements.

LoRa Semtech’s proprietary modulation is a spread-spectrum technique that uses wideband linear frequency modulated pulses to encode information, whose frequency increases or decreases over a certain amount of time. As with other spread-spectrum modulation techniques, LoRa™ uses the entire channel bandwidth to broadcast a signal, making it robust to channel noise. In addition, because LoRa modulation uses a broad band of the spectrum, it is also resistant to long term relative frequency error, multi-path, fading and Doppler effects.

FEATURES:

1. 168 dB maximum link budget
2. +20 dBm - 100 mW constant RF output vs. V supply
3. +14 dBm high efficiency PA
4. Programmable bit rate up to 300 kbps
5. High sensitivity: down to -146.5 dBm
6. Bullet-proof front end: IIP3 = -12 dBm
7. 100 dB blocking immunity
8. Low RX current of 10 mA, 200 nA register retention
9. Fully integrated synthesizer with a resolution of 61 Hz
10. FSK, GFSK, MSK, GMSK, LORA and OOK modulations
11. Built-in bit synchronizer for clock recovery
12. Sync word recognition
13. Preamble detection
14. 115 dB+ Dynamic Range RSSI
15. Automatic RF Sense with ultra-fast AFC
16. Packet engine up to 64 bytes with CRC
17. Built-in temperature sensor and Low Battery indicator

BOARD CONFIGURATIONS:

SPECIFICATIONS:

1. Family: RF Transceiver Modules      
2. Manufacturer  Semtech Corporation
3. Series  LoRa™           
4. RF Family/Standard: General ISM < 1GHz              
5. Modulation: FSK, GFSK, GMSK, MSK, OOK          
6. Frequency: 137MHz ~ 1.02GHz       
7. Data Rate: 300kbps   
8. Power  Output: 14dBm          
9. Sensitivity: -148dBm  
10. Serial Interfaces: SPI             
11. Voltage  Supply: 1.8 V ~ 3.7 V          
12. Current  Receiving: 12mA     
13. Current  Transmitting  : 120mA         
14. Mounting Type: Through Hole           
15. Operating Temperature: -40°C ~ 85°C

RELATED DOCUMENTS:

1. Datasheet.
2. Schmatic
3. Layout.

PACKAGE INCLUDES:

1. 1 X LoRa Semtech RF Transmission Shield SX1276MB1MAS-ND