ADL5571 Datasheet | Analog Devices

FEATURES Gain: 29 d B Operation from 2.5 GHz to 2.7 GHz EVM ≤ 3% with 16 QAM OFDMA @ POUT = 25 d Bm (3.3 V, 2.6 GHz) @ POUT = 27 d Bm (5 V, 2.6 GHz) Input matched to 50 Ω Power supply: 3.2 V to 5 V .. Quiescent current: 135 m A Power-added efficiency (PAE) 21% @ POUT = 25 d Bm (3.3 V, 2.6 GHz) Multiple operating modes to reduce battery drain Standby mode: 9 m A Sleep mode: <1 μA GENERAL DESCRIPTION The ADL5571 is a high linearity 2.5 GHz to 2.7 GHz power amplifier designed for Wi MAX mobile terminals and CPEs using TDD operation at a duty cycle of 50% or lower. With a gain of 29 d B and an output pression point of 31 d Bm, it can operate at an output power level up to 27 d Bm while maintaining an EVM of ≤3% with a supply voltage of 5 V. PAE is 21% at POUT = 25 d Bm with a 3.3 V supply voltage. The ADL5571 RF input is matched to provide an input return loss of better than 10 d B. 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 m A burst rms when delivering 25 d Bm (3.3 V supply). A standby mode is available that reduces the quiescent current to 9 m A, which is useful when a TDD terminal is receiving data. The ADL5571 is fabricated in a Ga As HBT process and is packaged in a 4 mm × 4 mm, 16-lead, Pb-free, Ro HS-pliant LFCSP that uses an exposed paddle for excellent thermal impedance. It operates from - 40°C to +85°C. APPLICATIONS Wi MAX mobile terminals and CPEs FUNCTIONAL BLOCK DIAGRAM VCC1 VCC2 RFIN IM1 FIRST STAGE IM2 SECOND STAGE IM3 THIRD STAGE RFOUT STBY VREG BIAS_1 BIAS_2 BIAS_3 06956-001 CFLT Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No...