The ES8218 with Codec ICs QFN-28 RoHS is a low power, low cost, stereo audio codec from Everest Semiconductor. It is specifically designed for high-fidelity audio solutions in portable consumer electronics such as smart phones, PNDs, DAPs, and gaming devices. The device integrates a mono headphone amplifier, stereo microphone amplifiers, stereo line-in amplifiers, a multi-channel audio codec, an analog to digital converter and a digital to analog converter. It also features built-in microphone/line bias and precise microphone programmable gain control. Other features include an integrated power management block, an on/off switch and digital volume control.