Silabs EM35x高性能ZigBee设计方案
Silabs公司的EM351和EM357是高度集成的系统级芯片(SoC),包括有2.4 GHz, IEEE 802.15.4-2003兼容的收发器,32位ARM® Cortex-M3 MCU,闪存和RAM存储器,以及用来ZigBee系统的外设.主要用在智能电网,建筑物自动化和控制,家庭自动化和控制,安全和监视以及通用的ZigBee无线传感器网络.本文介绍了EM351/EM357主要特性,框图,典型应用电路以及采用RFMD RF6525的EM35x参考设计电路图,材料清单和PCB设计文件图.
The EM351 and EM357 are fully integrated system-on-chips that integrate a 2.4 GHz, IEEE 802.15.4-2003-compliant transceiver, 32-bit ARM® Cortex-M3 microprocessor, flash and RAM memory, and peripherals of use to designers of ZigBee-based systems.
The transceiver uses an efficient architecture that exceeds the dynamic range requirements imposed by the IEEE 802.15.4-2003 standard by over 15 dB. The integrated receive channel filtering allows for robust co-existence with other communication standards in the 2.4 GHz spectrum, such as IEEE 802.11-2007 and Bluetooth. The integrated regulator, VCO, loop filter, and power amplifier keep the external component count low. An optional high performance radio mode (boost mode) is software-selectable to boost dynamic range.
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