The AFRX5G372 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 T/R control.
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.