CM1630-04DE

Overview

The CM1630-04DE is a four-channel EMI filter circuit manufactured by onsemi, designed for high-speed data line protection. It utilizes an RC Pi-filter topology to suppress electromagnetic interference in compact mobile and portable devices. The component features a TDFN-8 surface-mount package with dimensions of 2 mm x 2 mm x 0.8 mm. Key electrical parameters include a capacitance of 8.5 pF per channel and a cutoff frequency of 200 MHz. It operates within a temperature range of -40°C to +85°C and provides attenuation of 25 dB at frequencies between 800 MHz and 6 GHz.

Feature Summary

• Integrates four independent low-pass filter channels within a single compact package.
• Employs RC Pi-network topology to effectively attenuate high-frequency noise.
• Provides targeted EMI suppression for sensitive high-speed digital interfaces.

Applications

• Protection for USB data lines in mobile devices
• EMI filtering for LCD interface circuits
• Signal integrity enhancement for camera module connections

Procurement Notes

Verify the specific suffix 'DE' against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Ensure the selected variant matches the required 8.5 pF capacitance value for your specific impedance matching needs. Cross-reference the TDFN-8 footprint dimensions during PCB layout finalization to guarantee proper solder joint formation and thermal performance.

Selection Notes

Select this component when designing circuits requiring multi-channel EMI suppression for high-speed signals such as USB or display interfaces. The choice is driven by the need for low parasitic capacitance to maintain signal integrity while providing significant attenuation above 200 MHz. Consider the small form factor for space-constrained applications where discrete components would exceed available board real estate.

Part Context

This device belongs to onsemi’s family of EMI-RFI filter arrays specifically engineered for consumer electronics. These filters address the increasing challenge of electromagnetic compatibility in densely packed portable devices. The product line supports various interface standards by offering tailored capacitance and resistance values to meet specific system requirements without compromising data transmission speeds.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative vendors by matching the RC Pi-filter topology, 8.5 pF capacitance, TDFN-8 package dimensions, and operating temperature range before substitution.