This part is a kind of semiconductor called AK5340-VS.

Function of this product has CMOS 18 Bit 2 Channel A/D Converter.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

AK5340-VS (1/3) IL08 C-MOS 18-BIT 2 CHANNEL A/D CONVERTER TOP VIEW 1 AINL + AINL _ AINR + AINR _ V REF IN SEL18 PD CLK CMODE SMODE TST1 TST2 TST3 TST4 SCLK FSYNC L/R 15 17 14 V REF SDATA 26 16 AINL + IN 1 AINL _ IN 2 V REF IN 3 4 AVDD 5 AGND 6 NC 7 NC TST1 IN/OUT 8 SEL18 IN 9 PD IN 10 TST2 IN 11 CMODE IN 12 SMODE IN 13 L/R IN/OUT 14 28 AINR + IN 27 AINR _ IN 26 V REF OUT NC 25 DVDD 24 NC 23 22 TST4 IN 21 TST3 IN/OUT 20 CLK IN DGND 19 DVDD 18 17 FSYNC IN/OUT 16 SDATA OUT 15 SCLK IN/OUT 2 28 27 3 9 10 20 12 13 8 11 21 22 AVDD, AGND : FOR ANALOG BLOCK DVDD, DGND : FOR DIGITAL BLOCK AK5340-VS (2/3) INPUT AINL + AINL _ AINR + AINR _ CLK ; ; ; ; ; L-CH ANALOG POSITIVE INPUT L-CH ANALOG NEGATIVE INPUT R-CH ANALOG POSITIVE INPUT R-CH ANALOG NEGATIVE INPUT MASTER CLOCK (CMODE = H : 38 [ ... ]

AK5340-VS PDF Datasheet Download