摘要：在这个噪声发生器电路，放大器（ MAX4238 ）有没有在其输入电压噪声的1 / f的组成部分。它自己的输入电压噪声放大与低电阻值作出了反馈网络，无论是从电阻器或放大器的输入噪声电流以避免增加明显的1 / F噪声。 Maxim > App Notes > Audio Circuits Signal Generation Circuits Keywords: white noise, pink noise, flicker noise, 1/f noise, low-noise op amps Dec 06, 2010 APPLICATION NOTE 4527 White-Noise Generator Has No 1/f Component Abstract:In this noise-generator circuit, the amplifier (MAX4238) has no 1/f component in its input voltage noise. It amplifies its own input-voltage noise with a feedback network made with low-value resistors, to avoid adding noticeable 1/f noise either from the resistors or from the amplifier’s input noise current. A similar version of this article appeared in the March 20, 2008 issue of EDN magazine. White-noise generators (those for which the graph of output-power density vs. frequency is flat) are useful for t……