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请问TI有没有模拟乘法器芯片? 有没有用于超声波信号混频的ic(就是将多普勒信号解调出来,即给两个频率不同,都在40khz附近的信号,求他们的频率之差)?

Other Parts Discussed in Thread: MPY634, VCA822, VCA820

RT,谢谢!