The AFRX5G272 is an integrated multi-chip module designed for TD-LTE
and 5G mMIMO applications. It consists of a T/R switch, a two-stage low noise
amplifier and support circuitry to work from a 5 V supply and a 1.8 V logic-level
The device has Tx and Rx modes, which are controlled via T/R logic signaling.
In Tx mode, internal RF switches direct the signal from the antenna port to an
external termination resistor. In Rx mode, internal RF switches direct the signal
from the antenna port to internal LNAs. While in Tx mode, the LNA is in idle
mode with minimized current consumption.