View mn6474a datasheet:

For Audio Equipment MN6474A D/A Converter for Digital Audio Equipment Overview Pin Assignment The MN6474A is a CMOS digital-to-analog converter with a built-in 16-bit digital filter for pulse code modulation (PCM) digital audio equipment. It uses noise shaping technology to convert a digital signal into a PWM signal. It contains a 4-fold oversampling digital filter that LRPOL 33 21 OUTR(�) permits simplification of the low pass filter after the D/A LRCLK 34 20 AVSS1 converter, thus greatly reducing the power consumption BCLK 35 19 AVSS2 SRDATA 36 18 OUTR(+) of the entire D/A conversion system. DVSS3 37 17 AVDD2 The chip provides both regular and inverted phase DVDD 38 16 N.C. 384FS 39 15 AVDD3 outputs for both channels. PD 40 14 OUTL(+) The chip contributes to cost a