The WM8731LSEFL is a low-power stereo codec with integrated headphone driver, manufactured by Wolfson Microelectronics plc (now Cirrus Logic). This codec is designed for portable audio applications, providing high-quality audio conversion and playback capabilities. It's commonly used in MP3 players, portable media players, and other battery-powered audio devices.

Applications

• Portable MP3 players: Used in MP3 players to provide high-quality audio playback and recording capabilities.
• Portable media players (PMPs): Integrated into PMPs to support audio playback and recording functions.
• Digital voice recorders: Employed in digital voice recorders to capture and playback audio.
• USB audio interfaces: Used in USB audio interfaces to convert analog audio signals to digital format and vice versa.
• Portable gaming devices: Integrated into portable gaming devices to provide audio output for games and multimedia content.

Features

• Stereo audio codec: Supports stereo audio encoding and decoding, providing high-quality audio performance.
• Integrated headphone driver: Includes an integrated headphone driver, eliminating the need for external headphone amplifiers.
• Low power consumption: Designed for low power consumption, extending battery life in portable devices.
• Multiple sampling rates: Supports multiple sampling rates, allowing for flexible audio processing.
• Digital volume control: Features digital volume control, providing precise volume adjustment.

Benefits

• High-quality audio: Provides high-quality audio playback and recording capabilities.
• Simplified design: Integrated headphone driver simplifies the design process and reduces the number of external components required.
• Extended battery life: Low power consumption extends battery life in portable devices.
• Flexible audio processing: Multiple sampling rates allow for flexible audio processing.
• Precise volume control: Digital volume control provides precise volume adjustment.

Additional Details

The WM8731LSEFL typically operates with a supply voltage of 3.3V. It supports various audio formats, including PCM, I2S, and AC97. The codec features a signal-to-noise ratio (SNR) of typically 90 dB for playback and recording. The headphone driver can drive headphones with impedances ranging from 16 ohms to 32 ohms. The device is available in a small QFN package, saving valuable board space. The operating temperature range typically spans from -25°C to +85°C.