ADL5570

Preliminary Technical Data FEATURES Fixed gain of 29 dB Operation from 2.3 GHz to 2.4 GHz EVM ≤3% with 16 QAM OFDMA @ POUT = 25 dBm [3.5V] and @ POUT = 27.5 dBm [5V] Input internally matched to 50 Ω Power supply: 3.2 V to 5.5 V Quiescent current 130 mA in high power mode 70 mA in low power mode PAE: >20% Multiple operating modes to reduce battery drain Low power mode: 100 mA (Operating) Standby mode: 10 mA Sleep mode: < 1 μA 2.3 GHz to 2.4 GHz WiMAX Power Amplifier ADL5570 FUNCTIONAL BLOCK DIAGRAM VCC VCC1 VCC VCC2 RFIN IM1 1st stage IM2 2nd stage IM3 3rd stage RFOUT OM STBY VREG MODE Bias_1 Bias_2 Bias_3 CFLT APPLICATIONS WiMAX/WiBro Mobile Terminals and CPEs Good performance from 2.5Ghz to 2.7Ghz - See Page 7 www.DataSheet4U.com Figure 1.AD5570 Block Diagram GENERAL DESCRIPTION The ADL5570 is a high linearity 2.3 GHz to 2.4 GHz power amplifier designed for WiMAX 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 26 dBm while maintaining an EVM of ≤3% with a supply voltage of 3.5V. PAE is greater than 20% at POUT = 25 dBm with a 3.5V supply voltage. The ADL5570 RF input is matched on chip and provides an input return loss of less than −10 dB. The open-collector output is externally matched with strip-line and external shunt capacitance. The ADL5570 operates over a supply voltage range from 3.2 V to 5.5 V with a supply current of...