The CS4330, CS4331 and CS4333 are complete, stereo digital-to-analog output systems including interpolation, 1-bit D/A conversion and output analog filtering in an 8pin package. These devices differ in the serial interface format used to input audio data. The CS4330, CS4331 and CS4333 are based on deltasigma modulation, where the modulator output controls the reference voltage input to an ultra-linear analog lowpass filter. This architecture allows for infinite adjustment of sample rate between 2 kHz and 50 kHz while maintaining linear phase response simply by changing the master clock frequency.