This part is a kind of semiconductor called ACPM-7391.

Function of this product has 4x4 Power Amplifier Module.

Manufacturers : AVAGO

Image and pinout :

Some of the text within the PDF file :

ACPM-7391 4x4 Power Amplifier Module for UMTS1700(1750-1785MHz) and UMTS1700/2100(1710-1755MHz) Data Sheet Description The ACPM-7391, a Wide-band Code Division Multiple Access(WCDMA) Power Amplifier (PA), is a fully matched 10-pin surface mount module developed for WCDMA handset applications. This power amplifier module is developed to cover both 1710-1755MHz(UMTS1700/2100) and 1750-1785MHz (UMTS1700). The ACPM-7391 meets the stringent WCDMA linearity requirements for output power of up to 28dBm. The ACPM-7391 is also developed to meet HSDPA specs. The ACPM-7391 is designed to enhance the efficiency at low and medium output power range by using 3-mode control scheme with 2 mode control pins. This provides extended talk time. The ACPM-7391 is self contained, incorporating 50ohm input and o [ ... ]

ACPM-7391 PDF Datasheet Download