Maxim MAX7060 280-450MHz可编程ASK发送方案

Maxim 公司的MAX7060 是280-450MHz可编程ASK/FSK发送器，采用全集成分数N合成器，起动时间小于25us，50kbps Manchester 数据速率ASK ，70kbps Manchester 数据速率FSK ，5V电源发送功率达14dBm，主要应用在车库门开始，遥控，家庭和工业自动化，传感器网络和安全系统。本文介绍 MAX7060主要特性，方框图，SPI模式和人工模式应用电路图和相应的材料清单。

280MHz to 450MHz Programmable ASK/FSK Transmitter

The MAX7060 frequency and power-programmable ASK/FSK transmitter operates at 280MHz to 450MHz frequencies. This device incorporates a fully integrated fractional-N synthesizer, which allows the user to set the RF operating frequency to a large fraction of the 280MHz to 450MHz frequency range with a single crystal. For example, the MAX7060 can be tuned from 285MHz to 420MHz with a 15MHz crystal. The RF output power is user-controlled between +14dBm and -14dBm, with a 5V supply or with battery voltages as low as 3.2V. At the minimum specified battery voltage of 2.1V, the RF output power-control range is between +10dBm and -14dBm. To maintain a good output power match across a broad range of frequencies, the MAX7060 also contains a pro­grammable matching capacitor connected in parallel with the power amplifier (PA) output.
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