The WM8955B is a low-power stereo codec from Cirrus Logic, designed for portable audio applications. It provides high-quality audio playback and recording capabilities while minimizing power consumption to extend battery life. The codec integrates several key audio processing functions into a single chip, reducing board space and system cost.

Applications:

• Mobile Phones
• Portable Media Players
• Tablets
• Gaming Devices
• Voice Recorders

Features:

• Stereo ADC and DAC with high signal-to-noise ratio (SNR)
• Integrated headphone driver
• Class D speaker driver with integrated charge pump
• Low power consumption
• Digital audio interface (I2S, PCM)
• Flexible clocking options
• Microphone bias
• I2C control interface
• Digital signal processing (DSP) capabilities

Benefits:

• Excellent Audio Quality: The high-performance ADC and DAC deliver clear and accurate audio reproduction.
• Long Battery Life: Low power consumption maximizes battery life in portable devices.
• Small Form Factor: Integration of multiple functions reduces board space.
• Reduced System Cost: Fewer external components are required.
• Design Flexibility: Flexible clocking and digital audio interface options simplify integration.
• Advanced Audio Processing: Integrated DSP enables audio enhancement and noise reduction.
• High-Quality Headphone Output: The headphone driver delivers excellent audio performance.

The WM8955B operates from a single power supply and features separate analog and digital power domains to minimize noise. It includes a comprehensive set of programmable functions that allow designers to customize the audio performance for their specific application. The Class D speaker driver provides efficient amplification, reducing power consumption and heat dissipation. The device is available in a compact package, making it suitable for space-constrained applications. The integrated microphone bias allows for direct connection of microphones. The WM8955B offers a versatile and cost-effective solution for portable audio applications that require high performance and low power consumption.