The SST12CP21 from Microchip is a 2.4 GHz 256-QAM RF high-power amplifier with a low EVM and current consumption for 256-QAM and 802.11n systems. It delivers high linear output power of up to 23 dBm at 1.75% dynamic EVM, with MCS9 HT40 MHz bandwidth modulation at 5V and 320 ma current consumption. This performance significantly extends the range of 802.11b/g/n WLAN and MIMO systems, while consuming extremely low current at the maximum 256-QAM data rate.