The F4482 from Renesas is a Quad Path Tx Differential Variable Gain Amplifier (DVGA) that operates from 1300 to 2800 MHz. This amplifier has been developed for Macro Base Stations. It provides four independent transmit paths, each with a gain of up to 27.5 dB, an output P1dB of +16.5dBm, and a noise figure of 5.7dB. Each channel includes a glitch-free digital step attenuator that reduces gain by up to 31.5 dB in 0.5 dB steps. The DVGA operates over a DC supply of 3.3 V and draws 500 mA of current. It uses Renesas’ patented Zero-Distortion and Glitch-Free technologies, that provide superior performance and PA damage protection over the entire RF gain range.
The F4482 is available in a 56-LGA package that measures 8 x 8 mm with matched 100Ω differential input and 50Ω single-ended output impedances for ease of integration into the signal path. It is suitable for use in 4G and 5G multi-mode, multi-carrier transmitters, LTE and UMTS/WCDMA base stations, active antenna systems and digital radio.
