This part is a kind of semiconductor called AD2020.

Function of this product has 3-Digit A/D Converter.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

,. ANALOG W DEVICES - - FEATURES low Cost 12l lSI Design Multiplexetf Character Serial BCD Output -Support Components Required 10 (including displays) Single +5V Power Supply Required Balanced Differential Input Internal Reference low Power Consumption (SOmWtypical) Small Size: 16 Pin Dual-in-Line Wide Temperature Range: Operating 0 to +7SoC Storage -SSoC to +150oC Extended Temperature Range Available Upon Special Request 12L 3 DigitAID Converter II OBSOLETE GENERAL DESCRIPTION The AD2020 is a low cost 3 digit AID Converter, needing only 10 additional support components to make a complete 3 digit DPM/DVM. The small total component count, the low cost, and high reliability allow for a wide variation in display applications, especially those previously utilizing APM's (Analog Panel [ ... ]

AD2020 PDF Datasheet Download