This part is a kind of semiconductor called AD976.
Function of this product has 16-Bit/ 100 kSPS/200 kSPS BiCMOS A/D Converters.
Manufacturers : Analog Devices
Image and pinout :

Some of the text within the PDF file :
a FEATURES Fast 16-Bit ADC 200 kSPS Throughput – AD976A 100 kSPS Throughput – AD976 Single 5 V Supply Operation Input Range: ؎10 V 100 mW Max Power Dissipation Choice of External or Internal 2.5 V Reference High Speed Parallel Interface On-Chip Clock 28-Lead Skinny DIP, SSOP or SOIC Packages CAP 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters AD976/AD976A FUNCTIONAL BLOCK DIAGRAM REF 4k⍀ R 4R VIN 4R 3 AGND2 CONTROL LOGIC & INTERNAL CALIBRATION CIRCUITRY R/C CS BUSY SWITCHED CAP ADC PARALLEL INTERFACE D15 D0 VANA AGND1 2.5V REFERENCE AD976/AD976A VDIG CLOCK DGND R = 6k⍀ AD976 R = 3k⍀ AD976A BYTE GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD976/AD976A is a high speed, low power 16-bit A/D converter that operates from a single 5 V supply. The part contains a successive app [ ... ]
AD976 PDF Datasheet Download
