资料介绍
摘要：铁路分裂是一个人造的虚拟接地作为参考电压。它是用来设置信号匹配运算放大器的“甜蜜点” 。运算放大器具有最线性，无失真的品质，甜蜜点。通常情况下，甜蜜点附近发生单电源轨和地面之间的中心。在信号的情况下，虚拟的地面控制复或开关信号时，通道的DC错误。
Maxim > App Notes > Audio Circuits General Engineering Topics Power-Supply Circuits
Keywords: Op Amps, Virtual Ground, Rail Splitter, multiplexer, MUX, voltage divider, sensor conditioning, Dec 19, 2008
precision resistor, digital pots, potentiometer, resistance, single power supply, center, matching-bias,
reference, channel offset, settling time, error
APPLICATION NOTE 4344
Rail Splitter, from Abraham Lincoln to Virtual Ground
By: Bill Laumeister
Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signal
to match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweet
spot. Typically, the sweet spot occurs near the center between the single power rail and ground. In the case
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