This part is a kind of semiconductor called ADC128D818.

Function of this product has ADC System Monitor.

Manufacturers : National Semiconductor

Image and pinout :

Some of the text within the PDF file :

ADC128D818 12-Bit, 8-Channel, ADC System Monitor with Temperature Sensor, Internal/ External Reference, and I2C Interface April 1, 2010 ADC128D818 12-Bit, 8-Channel, ADC System Monitor with Temperature Sensor, Internal/External Reference, and I2C Interface 1.0 General Description The ADC128D818 I2C™ system monitor is designed for maximum flexibility. The system monitor can be configured for single-ended and/or pseudo-differential inputs. An on-board temperature sensor, combined with WATCHDOG window comparators, and an interrupt output pin, INT, allow easy monitoring and out-of-range alarms for every channel. A high performance internal reference is also available to provide for a complete solution in the most difficult operating conditions. The ADC128D818’s 12-b [ ... ]

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