The GRF5123 from Guerilla RF is a Linear Driver Amplifier that operates from 1.8 to 5 GHz. It provides a gain of 37 dB with a noise figure of less than 2.2 dB and has an output P1dB of 24 dBm. This 50-ohm two-stage amplifier typically requires a two-element shunt series to match the input and output ports. It also includes separate tunes that allow it to maintain its excellent performance over bandwidths exceeding 400 MHz. The amplifier requires a supply voltage of 3.3 or 5 V and draws less than 100 mA of current. It is available in a surface-mount QFN-16 package that measures 3 x 3 mm and is suitable for linear driver / pre-driver amplifiers, 5G sub-6 GHz massive MIMO base stations, small cells and cellular repeaters, millimeter-wave IF stages, and high-performance RF Infrastructure applications.
