onsemi CM1457-04CP

The CM1457 is an inductor-based (L-C) EMI filter array with ESD protection, which integrates four, six, or eight filters in a CSP form factor with 0.40 mm pitch. Each EMI filter channel of the CM1457 is implemented with the component value of 6 pF - 35 nH - 4.7 pF - 35 nH - 1.8 pF. The cut-off frequency at -3 dB attenuation is 300 MHz and can be used in applications where the data rates are as high as 160 Mbps, while providing greater than -35 dB attenuation over the 800 MHz to 2.7 GHz frequency range. The parts include ESD diodes on every I/O pin and provide a high level of protection against electrostatic discharge (ESD). The ESD protection diodes connected to the external filter ports are designed and characterized to safely dissipate ESD strikes of ±15 kV, which is beyond the maximum requirement of the IEC61000−4−2 international standard.

This device is particularly well suited for wireless handsets, mobile LCD modules and PDAs because of its small package format and easy-to-use pin assignments. In particular, the CM1457 is ideal for EMI filtering and protecting data and control lines for the LCD display and camera interface in mobile handsets.

The CM1457 incorporates OptiGuard which results in improved reliability at assembly. It is manufactured with a 0.40 mm pitch and 0.25 mm CSP solder ball to provide up to 28% board space savings vs. competing CSP devices with 0.50 mm pitch and 0.30 mm CSP solder ball.

• Four, Six or Eight Channels of EMI Filtering
• ±15 kV ESD Protection (IEC 61000−4−2, Contact Discharge) at External Pins
• Greater than -40 dB of Attenuation at 1 GHz MIL−STD−883 International ESD Standard
• Chip Scale Package (CSP) with 0.40 mm Pitch and 0.25 mm CSP Solder Ball which Features Extremely Low Parasitic Inductance for Optimum Filter and ESD Performance
• OptiGuard Coating for Improved Reliability at Assembly
• These Devices are Pb−Free and are RoHS Compliant

• LCD and Camera Data Lines in Mobile Handsets
• I/O Port Protection for Mobile Handsets, Notebook Computers, PDAs, etc.
• EMI Filtering for Data Ports in Cell Phones, PDAs or Notebook Computers
• Wireless Handsets
• Handheld PCs/PDAs
• LCD and Camera Modules