The WM8955L is a high-performance, low-power stereo codec designed by Wolfson Microelectronics (now Cirrus Logic). It is primarily used in portable audio applications and offers a comprehensive set of features for recording and playback. The device integrates digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), along with headphone amplifiers and microphone preamplifiers, to provide a complete audio solution.

Applications

• Portable media players (PMPs)
• Smartphones
• Tablets
• Digital voice recorders
• Gaming devices

Features

• High-resolution stereo DAC and ADC
• Low power consumption
• Integrated headphone amplifier
• Microphone preamplifier with adjustable gain
• Digital audio interface (I2S)
• Flexible clocking options

Benefits

• High-quality audio playback and recording
• Extended battery life in portable devices
• Direct drive capability for headphones
• Optimized for voice recording applications
• Easy integration with digital audio processors
• Reduced system cost and complexity

Additional Details

The WM8955L features a high signal-to-noise ratio (SNR) and low total harmonic distortion (THD), ensuring excellent audio fidelity. It supports various sampling rates and bit depths for both recording and playback. The integrated headphone amplifier provides sufficient power to drive a wide range of headphones directly, eliminating the need for external amplifiers. The microphone preamplifier includes adjustable gain settings to optimize the recording level for different microphone types. The digital audio interface (I2S) allows for seamless integration with digital audio processors and other audio peripherals. The device also includes power management features to minimize power consumption in both active and idle modes. Its compact package size makes it suitable for use in small form-factor portable devices. The flexible clocking options allow the device to be used with a variety of clock sources, simplifying system design. It is designed to operate over a wide voltage range, making it compatible with different battery chemistries. The WM8955L's comprehensive feature set and low power consumption make it an ideal choice for portable audio applications requiring high-quality audio performance and long battery life.