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ADL5570 Datasheet(PDF) 1 Page - Analog Devices |
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ADL5570 Datasheet(HTML) 1 Page - Analog Devices |
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2.3 GHz to 2.4 GHz WiMAX Power Amplifier Preliminary Technical Data ADL5570 Rev. Pr G Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. 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 APPLICATIONS WiMAX/WiBro Mobile Terminals and CPEs Good performance from 2.5Ghz to 2.7Ghz - See Page 7 FUNCTIONAL BLOCK DIAGRAM IM1 IM2 IM3 RFIN VCC VCC VREG MODE Bias_1 Bias_2 Bias_3 2nd stage 1st 3 e g a t s rd stage OM RFOUT RFIN VCC1 VCC2 Bias_1 Bias_2 Bias_3 2nd stage 1st 3 e g a t s rd stage STBY CFLT 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 400mA Burst RMS when delivering 25 dBm (3.5 V supply). A low power mode is also available for operation at power levels ≤10 dBm with optimized operating and quiescent currents of 100 and 70 mA, respectively. A Standby mode is available which reduces the quiescent current to 10 mA: useful when a TDD terminal is receiving data. The ADL5570 is fabricated in a GaAs HBT process and is packaged in a 4mm x 4mm 16-Lead Pb-free RoHS compliant LFCSP that uses an exposed paddle for excellent thermal impedance. It operates from −40°C to +85°C. |
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