CM1457-08CP

Overview

The CM1457-08CP is an eight-channel LC(pi) EMI filter array with integrated ESD protection, manufactured by onsemi. It utilizes a 20-WFBGA WLCSP package with dimensions of 4.01mm x 1.38mm x 0.70mm. The component features a total inductance of 34nH and total capacitance of 28.5pF. It operates within a temperature range of -40°C to 85°C and supports data rates up to 160Mbps. The device provides a cutoff frequency of 300MHz and attenuation greater than 35dB between 800MHz and 2.7GHz.

Feature Summary

• Integrates eight independent EMI filter channels with ESD protection in a single compact CSP form factor.
• Utilizes an inductor-based LC(pi) topology to provide low parasitic inductance for optimal signal integrity.
• Offers robust electrostatic discharge protection rated at ±15kV contact discharge per IEC 61000-4-2 standards.

Applications

• LCD and camera data line protection in mobile handsets
• EMI filtering for data ports in cell phones and PDAs
• I/O port protection for notebook computers and handheld PCs

Procurement Notes

Verify component status as the CM1457-08CP is listed as discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market sources. Ensure compatibility with existing PCB layouts due to the specific 20-WFBGA WLCSP footprint. Check for potential tariff implications if shipping to certain regions. Validate that alternative components meet the required electrical specifications for replacement designs.

Selection Notes

Select this component for applications requiring high-density integration of multiple filtered data lines. The 0.40mm pitch CSP package suits space-constrained portable devices. Consider the 300MHz cutoff frequency when designing for signals below this threshold. Ensure the design accommodates the specified operating temperature range. Verify that the 160Mbps data rate capability aligns with the target interface requirements.

Part Context

This part belongs to the Praetorian III series of EMI filter arrays from onsemi. The series focuses on providing combined EMI suppression and ESD protection in small footprints. The CM1457 variant specifically offers four, six, or eight channel configurations. It is designed for mobile and portable electronics where board space is limited.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is discontinued, engineers must identify equivalent parts based on matching electrical parameters and package dimensions. Verify that any replacement maintains the same channel count and ESD protection ratings.

FAQ

What is the ESD protection rating of the CM1457-08CP?

The component provides ±15kV ESD protection via contact discharge according to the IEC 61000-4-2 standard.

What is the maximum data rate supported by this filter array?

The CM1457-08CP can be used in applications with data rates as high as 160Mbps.

What is the attenuation performance of the CM1457-08CP?

It provides greater than -35dB attenuation over the frequency range of 800MHz to 2.7GHz.