The CM6500B is a single-chip USB audio CODEC manufactured by C-Media Electronics. Designed as a compact and efficient solution for USB audio applications, it provides a bridge between digital audio data from a computer or other USB host and analog audio outputs such as headphones and speakers. This end-of-life component was popular in various audio devices due to its integrated functionality.

Applications

• USB headsets
• USB dongles for audio output
• Portable audio devices
• Gaming peripherals
• VoIP communication devices

Features

• USB 2.0 full-speed compliant
• Integrated stereo audio DAC and ADC
• Supports 48kHz and 44.1kHz sampling rates
• Built-in headphone amplifier
• Microphone input support

Benefits

• Compact and cost-effective solution for USB audio
• High-quality audio playback and recording
• Easy integration into various audio devices
• Simplified design with minimal external components

Additional Details

The CM6500B features a built-in digital-to-analog converter (DAC) for high-fidelity audio playback and an analog-to-digital converter (ADC) for microphone input. It is a full-speed USB 2.0 device, ensuring compatibility with a wide range of host systems. It typically requires few external components, simplifying the design process. The chip often comes in a small QFN or similar package, making it suitable for portable devices. As an end-of-life product, it might be harder to find in the market, and newer audio CODECs with advanced features are available. However, it provided a solid foundation for USB audio solutions during its active lifecycle, especially where cost and size were critical factors.