The ALC5621-GRT is an Audio Codec integrated circuit made by Realtek that is RoHS (Restriction on Hazardous Substances) compliant. It is packaged in a QFN-32 (quad flat no-lead) package that is only 3.5 x 3.5 mm in size, making it very small and compact. The ALC5621-GRT is a low-cost, high-performance audio codec that is designed to provide flexibility and versatility for audio designs. It features a signal-to-noise ratio of up to 92 dB, a power consumption rate of 1.4 mW, headphone driver powers up to 4.12 mW, and stereo audio ADC with 16-bit resolution. The low-power consumption of the ALC5621-GRT makes it an ideal solution for small devices that require high-quality audio performance. It is perfect for applications such as portable media players, gaming consoles, and tablets.