ADL5571

2.5 GHz to 2.7 GHz WiMAX Power Amplifier ADL5571 FEATURES Gain: 29 dB Operation from 2.5 GHz to 2.7 GHz EVM ≤ 3% with 16 QAM OFDMA @ POUT = 25 dBm (3.3 V, 2.6 GHz) @ POUT = 27 dBm (5 V, 2.6 GHz) Input matched to 50 Ω Power supply: 3.2 V to 5 V www.DataSheet4U.com Quiescent current: 135 mA Power-added efficiency (PAE) 21% @ POUT = 25 dBm (3.3 V, 2.6 GHz) Multiple operating modes to reduce battery drain Standby mode: 9 mA Sleep mode: <1 μA GENERAL DESCRIPTION The ADL5571 is a high linearity 2.5 GHz to 2.7 GHz power amplifier designed for WiMAX mobile terminals and CPEs using TDD operation at a duty cycle of 50% or lower. With a gain of 29 dB and an output compression point of 31 dBm, it can operate at an output power level up to 27 dBm while maintaining an EVM of ≤3% with a supply voltage of 5 V. PAE is 21% at POUT = 25 dBm with a 3.3 V supply voltage. The ADL5571 RF input is matched to provide an input return loss of better than 10 dB. The open-collector output is externally matched with a microstrip line and an external shunt capacitor. The ADL5571 operates over a supply voltage range from 3.2 V to 5 V with a current of 450 mA burst rms when delivering 25 dBm (3.3 V supply). A standby mode is available that reduces the quiescent current to 9 mA, which is useful when a TDD terminal is receiving data. The ADL5571 is fabricated in a GaAs HBT process and is packaged in a 4 mm × 4 mm, 16-lead, Pb-free, RoHS-compliant LFCSP that uses an exposed paddle for excellent thermal impedan...