This part is a kind of semiconductor called AD7864.

Function of this product has 4-Channel/ Simultaneous Sampling/ High Speed/ 12-Bit ADC.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

a FEATURES High Speed (1.65␣ ␮ s) 12-Bit ADC Four Simultaneously Sampled Inputs Four Track/Hold Amplifiers 0.35␣ ␮ s Track/Hold Acquisition Time 1.65 ␮ s Conversion Time per Channel HW/SW Select of Channel Sequence for Conversion Single Supply Operation Selection of Input Ranges: ؎ 10 V, ؎ 5 V for AD7864-1 ؎ 2.5 V for AD7864-3 0 V to 2.5 V, 0 V to 5 V for AD7864-2 High Speed Parallel Interface Which Also Allows Interfacing to 3 V Processors Low Power, 90 mW Typ Power Saving Mode, 20␣ ␮ W Typ Overvoltage Protection on Analog Inputs APPLICATIONS AC Motor Control Uninterrupted Power Supplies Data Acquisition Systems Communications 4-Channel, Simultaneous Sampling, High Speed, 12-Bit ADC AD7864 FUNCTIONAL BLOCK DIAGRAM AVDD STBY VIN1A VIN1B VIN2A VIN2B VIN3A VIN3B VIN4A VIN4B [ ... ]

AD7864 PDF Datasheet Download