The PE128300 is a dual-channel TDD up-down converter designed for 5G FR2 n258 and n257 frequency bands. Up to 16 different mode definitions are pre-stored and selectable via a single-byte SPI command. Mode definitions contain seven elements: LO power on/off, V/H RX power on/off, V/H TX power on/off and V/H T/R switch state. Typical modes used are TX, RX, idle, sleep, and loopback.
![PE128300 Dual-channel Up-Down Converter](https://www.psemi.com/wp-content/uploads/2022/01/pe128300schem.png)