CSPEMI202A

• Two channels of EMI filtering
• Pi-style EMI filters in a capacitor-resistor-capacitor (C-R-C) network
• Greater than 40dB attenuation at 1GHz
• ±8kV ESD protection on each channel(IEC 61000-4-2 Level 4, contact discharge)
• ±15kV ESD protection on each channel (HBM)
• Supports bipolar signals – ideal for audio applications
• Chip Scale Package features extremely low lead inductance for optimum filter and ESD performance
• 5-bump, 0.930mm X 1.410mm footprint
• Chip Scale Package (CSP)
• RoHS compliant (lead-free) finishing

The CSPEMI202A is a dual low-pass filter array integrating two pi-style filters (C-R-C) that reduce EMI/RFI emissions while at the same time 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 35dB attenuation in the 800-2700 MHz range. These pi-style filters support bidirectional filtering, controlling EMI both to and from a microphone element. They also support bipolar signals, enabling audio signals to pass through without distortion.

In addition, the CSPEMI202A provides a very high level of protection for sensitive electronic components that may be subjected to electrostatic discharge (ESD). The input pins are designed and characterized to safely dissipate ESD strikes of ±8kV, 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 CSPEMI202A is particularly well suited for portable electronics (e.g., cellular telephones, PDAs, notebook computers) because of its small package format and low weight. The CSPEMI202A is available in a space-saving, low-profile Chip Scale Package with RoHS compliant lead-free finishing.