Differential Signaling
Differential signaling is a method for transmitting electrical data using two complementary voltage signals. These signals, often referred to as a differential pair, carry equal and opposite logic values. This technique offers several advantages over traditional single-ended signaling, particularly in high-speed applications.
In differential signaling, the data is encoded in the voltage difference between a balanced pair of signals, making it less susceptible to external noise. Differential signaling offers superior noise immunity, reduced EMI emissions, and allows for higher data rates by leveraging common-mode noise cancellation. This method is often used in computer buses like USB and DDR memory interfaces, networking standards like Gigabit Ethernet, and high-speed interconnects.
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