This part is a kind of semiconductor called MAX2014.

Function of this product has 75dB Logarithmic Detector/Controller.

Manufacturers : Maxim Integrated Products

Image and pinout :

Some of the text within the PDF file :

19-0583; Rev 0; 6/06 50MHz to 1000MHz, 75dB Logarithmic Detector/Controller General Description The MAX2014 complete multistage logarithmic amplifier is designed to accurately convert radio-frequency (RF) signal power in the 50MHz to 1000MHz frequency range to an equivalent DC voltage. The outstanding dynamic range and precision over temperature of this log amplifier make it particularly useful for a variety of base-station and other wireless applications, including automatic gain control (AGC), transmitter power measurements, and receivedsignal-strength indication (RSSI) for terminal devices. The MAX2014 can also be operated in a controller mode where it measures, compares, and controls the output power of a variable-gain amplifier as part of a fully integrated AGC lo [ ... ]

MAX2014 PDF Datasheet Download