CM1483-02DE

Overview

The CM1483-02DE is a two-channel EMI filter circuit with integrated ESD protection, designed for headset and speaker applications. It utilizes an RC (Pi) filter topology featuring 100 pF capacitance, 3 nH inductance, and 750 mOhms resistance. The device operates within a frequency range up to 1 GHz, providing 40 dB attenuation at a cutoff frequency of 31 MHz. Packaged in a compact uDFN-8 format measuring 2 mm x 2 mm x 0.5 mm, it supports surface mount technology and functions reliably between -40°C and +85°C.

Feature Summary

• Integrates dual-channel EMI filtering with electrostatic discharge protection for audio lines
• Employs a compact RC Pi-filter architecture to suppress electromagnetic interference
• Provides high signal integrity through low insertion loss characteristics

Applications

• Headset audio line protection
• Speaker circuit EMI suppression
• Portable electronic device audio interfaces

Procurement Notes

Verify component authenticity and datasheet revisions before integration. Confirm package dimensions and pinout compatibility with PCB layout requirements. Ensure environmental operating limits align with final product specifications. Validate electrical parameters against current design constraints to guarantee performance reliability.

Selection Notes

Select this component for designs requiring combined EMI filtering and ESD protection in limited space. The uDFN-8 package suits dense layouts where board area is constrained. Evaluate the 31 MHz cutoff frequency to ensure it meets specific noise suppression needs without affecting desired audio bandwidth signals.

Part Context

This part belongs to the CM1683 series of audio filters from onsemi. It serves as a specialized solution for protecting sensitive audio circuits from both electromagnetic interference and static discharge events. The series targets consumer electronics where signal purity and component safety are critical design priorities.

Replacement Considerations

Check for direct substitutes within the same manufacturer family that share identical pinouts and electrical specifications. Verify functional equivalence regarding attenuation levels and ESD handling capabilities before swapping components.