摘要：亚历山大·格雷厄姆·贝尔在1881年专利双绞线。我们今天仍然使用他们，因为他们的工作这么好。此外，我们必须在我们的世界令人难以置信的电脑电源的优势。电路仿真器和过滤器的设计方案有很少或根本没有成本。我们结合双绞线和低通滤波器产生的无线电频率干扰（RFI ）和电磁干扰（EMI ）的壮观拒绝。我们也说明了使用精密电阻阵列产生一个可定制的差分放大器。精密电阻设置增益和共模抑制比，而我们选择的频率响应。Maxim > Design Support > Technical Documents > Application Notes > A/D and D/A Conversion/Sampling Circuits > APP 4644 Maxim > Design Support > Technical Documents > Application Notes > Amplifier and Comparator Circuits > APP 4644 Maxim > Design Support > Technical Documents > Application Notes > Communications Circuits > APP 4644 Keywords: twisted pair, differential instrumentation amplifier, precision resistors, cancelling interference, RFI, EMI, radio frequency, electromagnetic, lowpass filter, clean signals, FPGA Jun 13, 2012 APPLICATION NOTE 4644 Use a Twist and Other Popular Wires to Reduce EMI/RFI By:Bill Laumeister, Strateg……