This part is a kind of semiconductor called RF2314PCBA.

Function of this product has GENERAL PURPOSE LOW NOISE AMPLIFIER.

Manufacturers : RF Micro Devices

Image and pinout :

Some of the text within the PDF file :

          RF2314       • Broadband Gain Blocks • Final PA for Low-Power Applications • IF or RF Buffer Amplifiers • Driver Stage for Power Amplifiers • Oscillator Loop Amplifiers
    The RF2314 is a general purpose, low-cost, high performance amplifier designed for operation from a 2.7V to 6V supply with low current consumption. The circuit configuration with resistive feedback allows for broadband cascadable amplification. Feedback with capacitive compensation extends the bandwidth of the amplifier, and is designed for optimized noise figure. The device is unconditionally stable and internally matched to 50 Ω. No external components are required. The RF2314 is available in a very small industry-standard SOT-23 5-le [ ... ]

RF2314PCBA PDF Datasheet Download