Microsemi Introduces LX5509 Power Amplifier

Microsemi announced the LX5509 power amplifier. The LX5509 PA is the second in a series of devices Microsemi is introducing to accelerate the proliferation of the next-generation Wi-Fi standard. The 5 gigahertz PA is ideal for IEEE 802.11ac (also known as fifth generation Wi-Fi) wireless access points and media devices. The LX5509 is packaged in a 4 mm x 4 mm quad flat no-lead (QFN) package and is available now for sampling.

The Microsemi LX5509 is the first commercially available PA that can transmit at similar power levels in both IEEE 802.11n and IEEE 802.11ac networks. It optimizes system performance by extending the high data rate range.

The LX5509 features a standardized pin out to help engineers, without layout changes, to later upgrade the performance level in their systems with higher power 5 GHz PAs that are currently in development at Microsemi.

Microsemi LX5509 Power Amplifier Features

  • 5 GHz operation
  • Linear output power of 19dBm for IEEE 802.11ac 256-QAM 80MHz, EVM < 1.8% @3.3V
  • Linear output power of 20dBm for IEEE 802.11n 64-QAM 20MHz, EVM < 3% @3.3V
  • 28dB OFDM power gain
  • 50-ohm input and output match, eliminating the need to optimize output matching on PCB
  • Integrated harmonic filter and output detector
  • Temperature-compensated on-chip output power detector with wide dynamic range

More info: Microsemi LX5509 Power Amplifier