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ADL5570 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADL5570
Description  2.3 GHz to 2.4 GHz WiMAX Power Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

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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