SX1272
SX1272/73 收发器设有 LoRa® 长距离调制解调器，可提供超长距离扩频通信并具有较高抗干扰性，可将电流消耗降到最低。
使用 Semtech 获得专利的 LoRa 调制技术 SX1272/73，可使用低成本晶体和材料清单实现 -137dBm 以上的灵敏度。此类收发器具有超高灵敏度，并集成 +20 dBm 功率放大器，实现业界领先的链路预算，是要求大范围和高强度的应用的最佳选择。LoRa 还赋予了传统模块技术难以企及的模块化和灵敏度优势，结束了传统设计必须在范围、抗干扰性和能耗之间做出取舍的窘况。
功能
- LoRa 调制解调器
- 最大链路预算为 157 dB
- 在 100 mW 恒定射频输出和 V 电源电压时，链路预算为 +20 dBm
- +14 dBm 高效率 PA
- 可编程位，速率高达 300 kbps
- 灵敏度高：低至 -137 dBm
- 防弹前端：IIP3 = -12.5 dBm
- 89 dB 阻断抗扰性
- 电流低：RX 为 10 mA，保持寄存器时为 100 nA
- 高度集成的合成器，分辨率 61 Hz
- FSK、GFSK、MSK、GMSK、LoRa 和 OOK 调制
- 内置位同步器，可用于时钟恢复
- 前导检测
- 127 dB 动态范围 RSSI
- 自动射频感应和带超快速 AFC 的 CAD
- 使用 CRC 的封包引擎，高达 256 字节
- 内置温度传感器和低电量指示灯
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自动读表
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家庭和楼宇自动化
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无线警报和安全系统
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工业监控
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远距离灌溉系统
应用
封装
- QFN 28
订购代码
- SX1272IMLTRT：无铅、无卤素且符合 RoHS/WEEE 标准
- SX1273IMLTRT：无铅、无卤素且符合 RoHS/WEEE 标准
- SX1272DVK1BAS (868MHz)
- SX1272DVK1CAS (915MHz)
- SX1272RF1BAS (868MHz)
- SX1272RF1CAS (915MHz)
Pb(Lead)-Free/RoHS-Green Info
（-40°C 至 +85°C / 4000 循环）
（50°C，4000 小时）
Related Parts
SX1272IMLTRT
Datasheets & Documentation
应用说明
- AN1200.10: ETSI Compliance of the SX1272/3 LoRa Modem
- AN1200.13 and AN1200.17: LoRa Modem Design
- AN1200.18: Software Implementation of Data Whitening and CRC
- AN1200.19: SX127x Reference Design Overview
- AN1200.20: Planar F-Antenna Reference Design
- AN1200.21: Reading Channel RSSI During a CAD
- AN1200.22: LoRa Modulation Basics
- AN1200.23: Recommended SX1272 Settings for EU868 LoRaWAN Network Operation
- AN1200.26: LoRa and FCC Part 15.247: Measurement Guidance
- AN1200.28: MCU Requirements for LoRaWAN
- AN1200.32: Designing for High Efficiency and Low-Harmonic Emissions
- AN1200.43: Testing for FCC Pre-Compliance with LoRaWAN Modules
- AN1200.59: Selecting the Optimal Reference Clock
- AN1200.62: Best Practices for FCC Pre-Compliance testing of LoRaWAN Modules
- AN1200.80: LoRa® Modem Doppler Immunity
Distributor/Catalog Supplier Inventory
View product availability from participating distributors below. Browse all distributors here.
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资源
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