Analog Devices introduced the ADL5570, a high-linearity power amplifier designed for mobile WiMAX terminals. The ADL5570 is optimized for operation in the 2.3-GHz to 2.4-GHz band and provides performance across frequency bands from 2.5 GHz to 2.7 GHz.

The output 1-dB compression point (P1dB) of 31 dBm allows the ADL5570 to operate in the linear region at output power levels of up to 26 dBm — at 3.5-V supply and 2.35 GHz — while maintaining an EVM (error vector magnitude) of less than three percent to minimize system-level signal noise. Additionally, the ADL5570 features a gain of 29 dB, which allows the device to be used with a wide variety of transceivers.

Operating with a single 3.2-V to 5.5-V supply, the ADL5570 consumes 250 mA RMS (root-mean-square). A low-power mode is also available for operation at levels less than 10 dBm, with optimized operating and quiescent currents of 100 mA and 70 mA, respectively. A standby mode is also available, which reduces the quiescent current to 10 mA.

The ADL5570 is sampling now, with volume production scheduled for May 2007. Priced at $3.00 per unit in 10,000-piece quantities, it is available in a 16-pin 4 mm × 4 mm LFCSP (lead-frame chip-scale package). The device is specified over the extended industrial temperature range (–40 degrees C to +85 degrees C).