Chip Scale Package EMI/RFI Filter Arrays

The WLP200 is an evaluation RC filter network suited for mobile equipment. The device consists of 6 channel RC filters with different filter characteristics in a Wafer Level Package (WLP). All I/O pins are ESD protected for contact discharges up to 8KV per the IEC1000-4-2 level 4 specification. Two versions with different capacitor values are available.

The CSPRC030 and the CSPRC032 are 4 channel EMI filter networks. They consist of resistors and capacitors that provide filtering for portable applications. The pin-out for both devices features a "flow through" design, allowing optimal signal routing. Portable applications frequently demand EMI/RFI filtering of signals in the 800 to 2,700 MHz band. The thin film filters provide a minimum of –30 dB of attenuation over this frequency band.

The bump size and pitch of these filters are selected such that these devices can be placed directly on a FR4 printed circuit board using conventional assembly techniques. Ground-bounce and cross-talk are minimized by a die design that provides two (CSPRC030 and CSPRC032) or eight (WLP200) solder bump contacts to the common supply connection.

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