This part is a kind of semiconductor called PAW3205DB-TJ3T.

Function of this product has LOW POWER WIRELESS MOUSE SENSOR.

Manufacturers : PixArt

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PAW3205DB-TJ3T PAW3205DB-TJ3T LOW POWER WIRELESS MOUSE SENSOR General Description The PAW3205DB-TJ3T is a high performance and low power CMOS process optical mouse sensor with DSP integration chip that serves as a non-mechanical motion estimation engine for implementing a computer wireless mouse. With adaptive frame-rate control(AFC), this optical mouse sensor gains extra power saving during mouse moving. Features Key Specification  Single power supply  Precise optical motion estimation technology  Complete 2-D motion sensor Operating voltage Power Supply 2.1V ~ 3.6V (VDD) Optical Lens 1:1  Accurate motion estimation over a wide Speed range of surfaces Up to 30 inches/sec  High speed motion detection up to 30 inches/sec  High resolution up to 1600 CPI Acceleratio [ ... ]

PAW3205DB-TJ3T PDF Datasheet Download