接收器通常由一个高阻抗差分输入级（通常使用差分放大器或比较器）以及后续的信号调理和输出驱动级组成。它感测两个输入引脚之间的电压差（Vdiff = V+ - V-）。如果Vdiff超过正阈值电压，则输出被驱动至逻辑高电平状态。如果Vdiff低于负阈值，则输出被驱动至逻辑低电平状态。处于阈值窗口内（接收器的迟滞或输入不确定区域）的电压将使输出保持其先前状态，从而提供抗噪声能力。抑制两个输入上的共模电压变化是其工作的关键。
诱因 → 失效模式 → 工程缓解
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A differential receiver converts balanced differential signals into single-ended signals while providing high noise immunity through common-mode rejection, essential for reliable data transmission in noisy environments.
Differential receivers use silicon as the semiconductor substrate, copper for interconnects, and plastic or ceramic packaging materials to ensure electrical performance, thermal management, and durability.
The differential input stage rejects common-mode noise by amplifying only the voltage difference between its two input signals while canceling out noise that appears equally on both inputs, significantly improving signal integrity.
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