CM1412 2-Channel Headset / Microphone EMI Filter Array with ESD Protection Product Description The CM1412 is a dual, low−pass filter array integrating two pi−style filters (C−R−C) that reduce EMI/RFI emissions while providing ESD protection.
This part is custom−designed to interface with a microphone port on a cellular telephone or similar device.
Each high quality filter provides more than 35 dB attenuation in the 800 to 2700 MHz range.
These pi−style filters support bidirectional filtering that control EMI both to and from a microphone element.
They also support AC signals, enabling audio signals to pass through without distortion.
In addition, the CM1412 provides a very high level of pr...

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