The single-chip stereo digital audio playback system consists of multi-bit σ -δ modulator, digital interpolation filter and continuous-time differential current output DAC. The uniqueness of this audio DAC lies in its independent SACD bit stream and external digital filter interface, which provides users with great system flexibility.

CS4398 is a decoding chip with a specification of 24Bit/ 192K Hz. It has a signal-to-noise ratio and dynamic range of 120 dB, and the total harmonic distortion+noise is as low as 0.0005%. It adopts advanced special multi-bit δ -sigma modulator and integrates mismatch noise shaping technology.