The VNA-28A+ is a wideband amplifier that operates from 0.5 to 2.5 GHz. It has a high directivity with built in DC blocks at the input and output. The amplifier requires a 2.8 V or 5 V supply for operation and is available in a compact surface mount plastic package that measures 5 x 6 mm. It is ideal for use as a buffer amplifier and can also be used for cellular applications.