CMX655DQ6-Y

Codecs Overview

The CMX655DQ6-Y is an ultra-low power voice codec manufactured by CML Micro, designed for direct connection to MEMS microphones and featuring a 1W Class-D speaker driver. It operates within a supply voltage range of 2.7 V to 3.6 V and supports sample rates of 8/16/32/48 ksps with 16-bit audio data resolution. The device utilizes flexible serial audio interfaces including I2S, PCM, and SPI/TWI control protocols. It is housed in a compact 24-lead VQFN package suitable for space-constrained applications.

Codecs Feature Summary

• Integrated digital microphone interface supporting single or dual MEMS microphones with parallel processing streams
• High-efficiency 1-Watt mono Class-D amplifier driving differential audio outputs for filterless speakers
• Comprehensive audio signal processing capabilities including noise gate, automatic level control, and programmable filtering
• Flexible serial audio interface compatible with standard microcontrollers, DSPs, and low-cost radio transceivers

Codecs Applications

• Security alarm panels
• Glass break detection systems
• Intercom and access control systems
• Mobile radio and accessories
• Voice-controlled equipment

Codecs Procurement Notes

Verify the specific suffix 'Y' against official manufacturer documentation to confirm any distinct electrical or mechanical variations from the standard CMX655DQ6 variant. Ensure compatibility with required operating temperatures and interface configurations before finalizing procurement orders.

Codecs Selection Notes

Select this component for battery-powered applications requiring minimal power consumption during always-on voice control operations. Consider the integrated Class-D amplifier efficiency and small VQFN-24 package size when designing for space-limited enclosures.

Codecs Part Context

The CMX655D represents an evolution of traditional audio codecs by integrating MEMS microphone support and high-efficiency Class-D amplification. This architecture significantly reduces power consumption compared to conventional designs using electret microphones and linear amplifiers, addressing modern low-power voice interface requirements.

Codecs Replacement Considerations

Consult official substitution lists for verified alternatives. Generic audio codecs may lack the specific digital microphone interface and integrated Class-D driver features required for direct replacement without circuit redesign.