17.7 GHz to 19.7 GHz, Low Noise Amplifier
Data Sheet
Rev. 0 Document Feedback
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
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2016 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Frequency range: 17.7 GHz to 19.7 GHz
Typical gain of >25.1 dB
Low noise input
Noise figure: 2.4 dB typical
High linearity input
>−1.5 dBm typical input third-order intercept (IIP3)
−11.5 dBm input 1 dB compression point (P1dB) at 19.7 GHz
Matched 50 Ω single-ended input
Matched 100 Ω differential outputs
8-lead, 2.00 mm × 2.00 mm LFCSP microwave packaging
APPLICATIONS
Point to point microwave radios
Instrumentation
Satellite communications (SATCOM)
Phased arrays
FUNCTIONAL BLOCK DIAGRAM
50Ω
SINGLE-ENDED 100Ω
DIFFERENTIAL
GND
INPT
RBIAS
VCC1
OUTN
OUTP
DNC
VCC2
ADL5725
14318-001
DNC = DO NOT CONNECT.
DO NO T CO NNE CT TO THIS PIN.
Figure 1.
GENERAL DESCRIPTION
The ADL5725 is a narrow-band, high performance, low noise
amplifier (LNA) targeting microwave radio link receiver designs.
The monolithic silicon germanium (SiGe) design is optimized for
microwave radio link bands ranging from 17.7 GHz to 19.7 GHz.
The unique design offers a single-ended 50 Ω input impedance
and provides a 100 Ω balanced differential output that is ideal for
driving Analog Devices, Inc., differential downconverters and radio
frequency (RF) sampling analog-to-digital converters (ADCs).
This low noise amplifier provides noise figure performance that, in
the past, required more expensive three-five (III-V) compounds
process technology to achieve.
The ADL5721 and ADL5723 to ADL5726 family of narrow-band
LNAs are each packaged in a tiny, thermally enhanced, 2.00 mm ×
2 mm LFCSP package. The ADL5721 and ADL5723 to ADL5726
family operates over the temperature range of −40°C to +85°C.