View mn35502 datasheet:

For Audio Equipment MN35502 D/A Converter for Digital Audio Equipment Overview Pin Assignment The MN35502 is a CMOS digital-to-analog converter designed especially for PCM digital audio equipment. It DIN 1 28 RSBDN features a built-in digital filter with 16/20-bit input. LRCK 2 27 RSBUP It uses pulse edge modulation (PEM) and JVC advanced BCK 3 26 M3 noise shaping (VANS) to yield the high resolution and M4 4 25 DVDD1 low distortion ratio equivalent to those of 20-bit systems covering the range between 0 and 20 kHz. DVDD2 5 24 XIN The chip incorporates an 8-fold oversampling digital CKO 6 23 XOUT filter that eliminates a low-pass filter after the D/A DVSS2 7 22 DVSS1 converter and thus greatly reduces the power consumption M1 8 21 M2 of the overall D/A conversion syste