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CC1120类似对讲机的设计,MIC输入的滤波和放大问题

Other Parts Discussed in Thread: CC1120

我们公司用的是CC1120来设计类似对讲机的方案,当发射机把语音数据发给接收机,接收机收到播放的时候耳机里会有嘟嘟嘟嘟的声音,应该是MIC采集数据的时候把干扰信息也采进来了,问一下TI公司有没有滤波的运算发大器,我想把它放在MIC输入前端,这样声音应该可以去掉,谢谢!!!