The WM8985 is a low power stereo codec designed for portable multimedia applications requiring the lowest possible power consumption and high quality audio. The device integrates pre-amps for stereo differential mics and includes Class D and Class AB drivers for headphone and differential or stereo line output. Advanced DSP features include a five-band equalizer and 3D enhancement, an ALC/limiter for the microphone or line input through the A/D converter and a digital playback limiter. Other programmable filtering functions are available in the ADC path. Highly flexible mixing capabilities enable many new application features, with the option to record and playback any combination of voice, line inputs and digital audio. The WM8985 digital audio interface can operate in master or slave mode, while an integrated PLL provides support for all commonly used clocking schemes in portable devices.