Airfast RF power LDMOS devices break the 50 percent Doherty efficiency barrier
Tampa Bay, Fla. – June 2, 2014 – (International Microwave Symposium) – Freescale Semiconductor is introducing its second generation of Airfast RF power solutions, delivering a new level of performance for advanced wireless infrastructure equipment, including GSM/UMTS, CDMA/W-CDMA, LTE, and TD-LTE applications.
Freescale’s newest Airfast family of RF power solutions builds on the success and proven performance of the previous generation, which was comprised of 28V discrete, single-stage power amplifiers. Leveraging and enhancing first-generation Airfast circuitry, die, matching network and packaging technologies, Freescale has reached another industry milestone with the next generation of Airfast technology, which includes the first production RF power LDMOS parts to achieve 50 percent efficiency in a Doherty configuration. Additionally, second-generation Airfast power amplifiers expand the portfolio’s breadth to include two-stage integrated circuits, incorporating multiple gain stages in a single package; as well as adding new offerings based on gallium nitride (GaN) and 48V LDMOS process technology.
The new devices are complemented by a broad array of customer solutions and support. Application-specific reference designs give customers a head start in designing and developing a wide range of common systems with configuration and development instructions.
“The second generation of Airfast solutions raises the bar for performance, efficiency and speed-to-market for our customers," said Paul Hart, senior vice president and general manager for Freescale’s RF group. “As the industry leader in RF power amplifiers, our new devices push the envelope across cellular standards and extend Freescale’s innovation to new levels in the wireless market.”
The initial second-generation Airfast products include:
- A2T07H310-24S – 300W asymmetrical Doherty transistor for wireless infrastructure applications in the 720-960 MHz frequency band. In a Doherty configuration, this device breaks the 50 percent efficiency barrier at 8 dB back-off with 55 dBm peak power and 18.9 dB gain in a NI-1230S-4L2L package.
- A2T07D160W04S – 160W dual-path transistor for wireless infrastructure applications in the 728-960 MHz frequency band. In Doherty configuration, this device has 51 percent efficiency at 7 dB output back-off with 52.5 dBm peak power and over 21.5 dB of gain in a NI-780S-4L package.
- A2T26H160-24S – 160W RF asymmetrical Doherty transistor for wireless infrastructure applications in the 2496-2690 MHz frequency band. In a Doherty configuration, this device has 47 percent efficiency at 8 dB back-off with 52.5 dBm peak power and 15.7 dB gain in a NI-780S-4L2L package.
- A2I25D012N – 12W RF integrated circuit for wireless infrastructure applications in the 2300-2690 MHz frequency band. In Doherty configuration, this device has 41 percent efficiency at 8 dB output back-off with 43.5 dBm peak power and 29 dB gain in a new TO-270WB-15 plastic package.
- A2I22D050N – 50W RF integrated circuit for wireless infrastructure applications in the 2000-2200 MHz frequency band. In Doherty configuration, this device has 42 percent efficiency at 8 dB output back-off with 49 dBm peak power and 28 dB gain in a new TO-270WB-15 plastic package.
For more information, visit www.freescale.com/RFpower.com.