耳机端口

设计笔记：

保护申请：

For these audio lines, the maximum signal values may be 12 Vp-p, and operate at frequencies less than 30kHz. At this frequency, the capacitance of the suppressor does not need to be taken into account. The electrical threat is ESD.

Solution Description:

As shown at the left, discrete multilayer varistors can be used for layout flexibility. Due to the analog nature of the audio signals, uni-polar TVS diode arrays are recommended only if the negative part of this signal is -0.5V or less since they may clip the negative part of the audio signal if the magnitude is larger.

Companion Solutions:

Other solutions within the Littelfuse MLV portfolio exist in addition to these recommendations. For example, if the manufacturing process cannot handle 0402-size components, devices with the same characteristics can be found in 0603-size.

监管问题：

IEC 61000-4-2将是适用于此端口的最合适的标准。它提供了一种测试方法，用于验证最终产品不容易受到ESD事件的影响。

Unique Features:

不适用。

Application Warnings:

不适用。