SX1276/77/78 Modified version WIRELESS & SENSING SX1276/77/78 - 137-1050 MHz Ultra Low Power Long Range Transceiver VR_DIG 868/915M RSSI LNA Interpolation & Filltering RX_L Frac-N Synthesizer PA TX_L VR_PA XTAL GENERAL DESCRIPTION With Semtech’s patented modulation technique the device can achieve sensitivity of over -140 dBm using a low cost crystal and bill of materials. 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. The devices also support high performance (G)FSK for WMBus, FCC Part 90, 15.4g, and other legacy modes. Semtech’s technology overcomes a typical trade-off of performance versus current consumption. The devices deliver exceptional phase noise, selectivity, receiver linearity, and IIP3 for significantly lower current consumption than competing devices. The devices cover the major ISM bands from 137 MHz to 1050 MHz. For ease of matching, low BOM cost, and higher performance the SX1276/77/78 family offers separate high band and low band support for applications wanting to cover dual bands for world-wide operation, dual band support, or security against future band allocation changes. RXTX DIO0 DIO1 DIO2 DIO3 DIO4 DIO5 GND 168 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 -146.5 dBm Bullet-proof front end: IIP3 = -12 dBm 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 ORDERING INFORMATION Automated Meter Reading Wireless Sensor Networks Home and Building Automation Wireless Alarm and Security Systems Industrial Monitoring and Control Rev. 0.0 11th July 2012 SPI KEY PRODUCT FEATURES Semtech’s SX1276/77/78 family provides ultra long range while maintaining low current consumption, making it optimal for numerous applications. RESET XO 32 MHz 169/433M APPLICATIONS AFC Divide by N Packet Engine & 66 byte FIFO PA Control Registers - Shift Registers - SPI Interface Decimation & Filtering TX_H Single to Mixers Differential LORA Demod LNA RX_H LORA Demod RC Oscillator GFSK Demod VR_ANA Power Distribution System GFSK Demod VBAT1&2 Page 1 Part Number Delivery MOQ / Multiple SX1276 T&R 3000 pieces SX1277 T&R 3000 pieces SX1278 T&R 3000 pieces www.semtech.com