The WM8955BL is a low-power stereo codec designed by Cirrus Logic for portable audio applications. It's intended to provide high-quality audio performance while minimizing power consumption for extended battery life. This codec integrates key audio processing components, contributing to smaller and more efficient system designs.

Applications:

• Smartphones
• Tablets
• Portable Media Players
• Gaming Devices
• Digital Voice Recorders

Features:

• High-performance stereo ADC and DAC
• Integrated headphone driver with low THD+N
• Class D speaker driver with integrated charge pump
• Low power consumption
• Digital audio interfaces (I2S, PCM)
• Flexible clocking options
• Microphone bias support
• I2C control interface
• On-chip digital signal processing (DSP) capabilities

Benefits:

• Superior Audio Quality: The high-performance ADC and DAC ensure clear and accurate audio reproduction for both playback and recording.
• Extended Battery Life: Low power consumption optimizes battery performance in portable devices.
• Compact Design: Integration of audio functions reduces the required board space.
• Reduced System Cost: Fewer external components needed for desired audio performance.
• Design Flexibility: Versatile digital audio interfaces and clocking options simplify system integration.
• Enhanced Audio Processing: Integrated DSP enables advanced audio effects and noise reduction capabilities.
• Excellent Headphone Experience: The headphone driver delivers high-quality audio.

The WM8955BL is designed to operate from a single power supply, with separate analog and digital supplies to minimize noise. It provides a comprehensive set of programmable functions, allowing designers to tailor the audio performance to their specific needs. The Class D speaker driver offers efficient amplification, reducing power consumption and heat dissipation. The device is available in a compact package for easy integration into portable devices. Integrated microphone bias allows direct connection of microphones, simplifying the audio input circuitry. The WM8955BL offers a cost-effective solution for portable audio applications that require high performance, low power consumption, and small size.