原标题：APC810 27dBm sx1278极远距离无线数传模块

　　APC810基于SX1278芯片设计，采用SEMTECH LoRa扩频调制技术，配合8位高速低功耗单片机，适用于对传输距离和可靠性要求极高的应用场合，扩频传输极强的抗干扰能力使之能适应于各种恶劣复杂的应用环境，SX1276覆盖所有主要Sub-1GHz频段，SX1278专为433MHz、470MHz频段产品设计。

　　拥有LoRa调制的APC810拥有超低的灵敏度及无线传输距离，在行业内均处于领先水平，模块可同时支持UART与RS232接口或UART与RS485接口并存，可直接替代有线RS232或RS485传输，用户无须编写复杂的转换与传输程序，即插即用。

　　说明：

　　1. APC340与APC810可以无缝进行通信。

       特点：

　　使用LoRa扩频调制技术

　　7000米传输距离

　　SX1278支持频率433MHz

　　500mW发射功率(可设置)

　　极低接收灵敏度-137dBm@300bps

　　采用UART/TTL接口，RS232/RS485可选

　　多频道可设，收发256Bytes数据缓冲区

　　工作电压4.7-8.0V

　　持续接收电流15mA

　　发射电流400mA

　　休眠电流5uA

　　内置看门狗

　　尺寸 50*31.9*7.0(mm)

　　应用：

　　极远距离, 高性能无线数传、通信、控制系统

　　工业自动化数据采集、过程控制

　　石油、矿石野外开采自动化数据采集

　　民用、军用训练设施

　　电力设备、电气设备状态监测系统

　　安防与报警系统, 楼宇、建筑物自动化

　　气象监控、温度监控、环境监控、节能监测

　　【sx1278】

　　137MHz to 525MHz Long Range Low Power Transceiver

　　The SX1276/77/78/79 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 SX1276/77/78/79 can achieve a sensitivity of over -148dBm 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

　　LoRaTM Modem 168dB maximum link budget

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

　　+14dBm high efficiency PA

　　Programmable bit rate up to 300kbps

　　High sensitivity: down to -148dBm

　　Bullet-proof front end: IIP3 = -11dBm

　　Excellent blocking immunity

　　Low RX current of 9.9mA, 200nA 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

　　Applications

　　Automated Meter Reading

　　Home and Building Automation

　　Wireless Alarm and Security Systems

　　Industrial Monitoring and Control

　　Long range Irrigation Systems

　　Packaging

　　QFN 28

　　Order Codes

　　SX1278IMLTRT - Pb-free, Halogen free, RoHS/WEEE compliant product