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shows the electrical schematic diagram of a differential transmission circuit in which noise sources VN and VG add to each signal line and are common to both signals. The differential receiver measures the difference between the two lines and rejects the common voltage of the signals. If used with closely coupled lines, the complementary signals cancel each other’s electromagnetic fields resulting in high immunity and low noise emissions. This immunity to external noise influence and the low radiated emissions make differential signaling a good choice when relatively high signaling rates and long distance are required in electrically noisy, or noise-sensitive applications. Differential signaling comes with the additional cost of the line driver, receiver, and interconnection over the cost of single-ended transmission. |
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知道什么是神吗?其实神本来也是人,只不过神做了人做不到的事情 所以才成了神。 (头文字D, 杜汶泽)
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