The WM8737LGEFL is a high performance, low power stereo ADC (Analog-to-Digital Converter) from Wolfson Microelectronics (now Cirrus Logic). It is designed for portable audio recording applications requiring high fidelity and minimal power consumption. The device is optimized for use in devices such as MP3 players, mobile phones, and other battery-powered recording equipment.

Applications:

• Portable media players with recording capabilities
• Mobile phones with audio recording
• Digital voice recorders
• USB audio interfaces
• Bluetooth headsets with recording capabilities

Features:

• Stereo ADC: Converts analog audio signals into digital data.
• Low Power Consumption: Extends battery life in portable devices.
• Microphone Bias: Provides power to external microphones.
• Preamplifier: Integrated preamplifier for boosting weak signals.
• Automatic Level Control (ALC): Automatically adjusts the recording level to prevent clipping.
• I2C Control Interface: Enables easy configuration and control.
• Flexible Input Routing: Offers various input options for different audio sources.

Benefits:

• High-Quality Audio Recording: Delivers clear and accurate audio recordings.
• Long Battery Life: Minimizes power consumption for extended recording time.
• Easy to Use: Simple control interface for easy configuration.
• Versatile: Suitable for a wide range of portable audio recording applications.
• Prevents Clipping: ALC feature ensures consistent recording levels.

Additional Details:

The WM8737LGEFL utilizes a sigma-delta architecture to achieve high performance and low noise. It incorporates a microphone bias circuit, allowing direct connection of external microphones. The integrated preamplifier boosts weak audio signals to optimal levels for conversion. The Automatic Level Control (ALC) feature automatically adjusts the recording level to prevent clipping, ensuring high-quality recordings in various environments. The device is controlled via an I2C interface, providing a flexible and easy-to-use control mechanism. It typically operates from a single 3.3V power supply. Detailed specs regarding SNR, THD+N, and power consumption are available in the datasheet.