CM1414
Key Features
- Functionally and pin compatible with CMD’s CSPEMI204 OptiGuard™ coated for improved reliability at assembly Two channels of EMI filtering, one for a microphone and one for an earpiece speaker Pi-style EMI filters in a capacitor-resistor-capacitor (C-R-C) network Greater than 35dB attenuation in the 8002700MHz range +8kV ESD protection on each channel (IEC 610004-2 Level 4, contact discharge) +15kV ESD protection on each channel (HBM) Chip Scale Package features extremely low parasitic inductance for optimum filter performance 5-bump, 0.950mm X 1.41mm footprint Chip Scale Package (CSP) Lead-free version available Product Description The CM1414 is a low-pass filter array designed specifically to reduce EMI/RFI emissions and provide ESD protection for a headset port on a cellular and mobile devices. The CM1414 integrates two high quality, pistyle filters (C-R-C) filters, one for a microphone and one for an earpiece or speaker, each providing more than 35dB attenuation relative to the pass band attenuation in the 800-2700 MHz range. These filters support bidirectional filtering, reducing EMI both to and from the headset port and support bipolar audio signals without distortion. In addition, the CM1414 provides a very high level of protection for sensitive electronic components that may be subject to electrostatic discharge (ESD). The input pins are designed and characterized to safely dissipate ESD strikes of +8kV contact discharge, the maximum requirement of the IEC 61000-4-2 international standard. Using the MIL-STD-883 (Method 3015) specification for Human Body Model (HBM) ESD, the device provides protection for contact discharges to greater than +15kV. The CM1414 protects sensitive components such as CPU and DSPs that have much weaker internal ESD protection circuitry usually only intended for mechanical handling protection. The CM1414
