The WM8904CGEFL/RV is an ultra low power Codec manufactured by Cirrus Logic that is designed for portable audio applications. It features an integrated audio digital/analog interface and supports a variety of I2S, PCM, and 9.0 standards. It employs a stereo, variable-rate, multi-bit audio digital/analog converter. Its advanced power management features include a standby mode, a low power control loop, and an output drift correction. The WM8904CGEFL/RV provides superior audio fidelity, low power consumption, and an almost seamless integration with the external audio system environment. The package includes an evaluation board and code examples. This CODEC is suitable for use in mobile phones, portable media players, and a variety of consumer electronics applications.