Microphone ESD protection
Protection application:
The maximum value of the standard signal is usually 5.5 Vp-p, the maximum frequency is less than 10kHz. At this frequency, without considering the capacitance of the suppressor. ESD electrical hazards exist.

Solution description:
As shown on the left, using discrete MLCV, so flexible layout. Since the audio signal has analog properties, it is suggested that a single stage transient suppression diode array is used only when the signal is negative for -0.5V or more, since they can reduce the negative value of the audio signal when the quantity is large.

Matching solutions:
In addition to the above recommendations, MLV TG product portfolio also provides other solutions. For example, if the manufacturing process is unable to process the components of the 0402 specification, the device can be used with the same properties as the 0603 specification.

Regulatory issues:
61000-4-2 IEC is the most suitable standard specification for this interface. Through the test can prove that the end product is not vulnerable to ESD hazards.

Characteristic: not applicable.

Application warning: not applicable.