CM1683-02DE

Overview

The CM1683-02DE is a two-channel EMI filter circuit with integrated ESD protection, designed for headset and speaker applications. It utilizes an RC (Pi) filter topology to suppress electromagnetic interference. Key electrical parameters include a cutoff frequency of 31 MHz, capacitance of 100 pF, inductance of 3 nH, and resistance of 750 mOhms. The device offers 40 dB attenuation within a 1 GHz frequency range. It operates between -40°C and +85°C and is housed in a compact uDFN-8 package measuring 2 mm x 2 mm x 0.5 mm.

Feature Summary

• Integrates EMI filtering with electrostatic discharge protection for audio lines
• Employs RC Pi-filter topology for effective noise suppression
• Provides dual-channel configuration for stereo headset or speaker signals

Applications

• Headset audio line protection
• Speaker signal filtering
• Portable electronic device audio interfaces

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm the specific suffix matches the required specifications. Check current availability status as supply conditions may vary. Ensure compliance with relevant regional regulatory standards before integration into final products.

Selection Notes

Select this component when simultaneous EMI suppression and ESD protection are required for low-capacitance audio lines. The uDFN-8 package suits space-constrained designs. Evaluate thermal performance against the specified operating temperature range. Consider the 31 MHz cutoff frequency relative to the target signal bandwidth to ensure minimal signal degradation.

Part Context

This component belongs to the CM1683 series of audio filters manufactured by onsemi. The series focuses on protecting sensitive audio interfaces from electromagnetic interference and static discharge events. These devices are engineered for consumer electronics where signal integrity and component reliability are critical for user experience.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for cross-reference information.