The document is a datasheet for the REJ03G1539-0100 SiGe MMIC High Frequency Low Noise Amplifier.
It includes information about the features, absolute maximum ratings, electrical characteristics, circuit block diagram, component values, test conditions, and package dimensions.
The amplifier is ideal for wireless LAN, cordless phone, GPS antenna, and IMS band applications, and it comes in a small SMD package.
It has low noise and high gain, with specific values provided for different frequencies and control voltages.
The document also includes information about the evaluation board and ordering information for the product.