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Campbell passive duplex filter circuit

2015-02-06 06:11  
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Campbell passive duplex filter circuit
Campbell's paper gives the author another digital wonders example. That is, the achievement of a functional digital circuit is always superior to the implementation of an analog circuit. He points out that IC filter’s dynamic range depends on the inductance. The bottom of the dynamic range is the thermal noise current (4KTBR) caused by the circuit’s resistance. The top of the dynamic range depends on saturation current of the inductor core. The dynamic range of Campbell’s selected component is up to 180dB. In comparison, the expensive 24-bit audio A / D converter only has 144dB on dynamic range.