[原创] Maxim MAX41460300－960MHz ASK和(G)FSK发送器解决方案

Maxim公司的MAX41460是具有SPI接口的300MHz–960MHz的幅移键控(ASK)和(高斯)频移键控(G)FSK发送器,集成了分数锁相环(PLL),在315MHz时能向50Ω负载输出功率高达+13dBm而仅消耗小于8mA(ASK)和12MA((G)FSK),单电源+1.8V到+3.6V工作,主要用在建筑物自动化和安全,无线传感器和告警,遥控和无钥匙门禁系统(PRE/PKE),胎压检测系统(TPMS),自动读表(AMR),车库门开启(GDO),无线遥控玩具和物联网(IoT).本文介绍了MAX41460主要优势和特性,框图和典型应用电路图以及评估板MAX4146x EVK主要特性,电路图,材料清和PCB设计图.

The MAX41460 is a UHF sub-GHz ISM/SRD transmitteris designed to transmit On-Off Keying (OOK), Amplitude-Shift Keying (ASK), Frequency-Shift Keying (FSK), andGaussian (G)FSK (or 2GFSK) data in the 286MHz to960MHz frequency range. It integrates a fractional phaselocked-loop (PLL) so that a single, low-cost crystal canbe used to generate commonly used world-wide sub-GHz frequencies. The fast response time of the PLL allowsfor frequency-hopping, spread spectrum protocolsfor increased range and security. The only frequency-dependentcomponents required are for the external antenna-matching network.

The crystal-based architecture of the MAX41460 providesgreater modulation depth, faster frequency settling,higher tolerance of the transmit frequency, and reducedtemperature dependence.
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