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PDF ADL5724 Data sheet ( Hoja de datos )
| Número de pieza | ADL5724 | |
| Descripción | Low Noise Amplifier | |
| Fabricantes | Analog Devices | |
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Data Sheet
12.7 GHz to 15.4 GHz, Low Noise Amplifier
ADL5724
FEATURES
Frequency range: 12.7 GHz to 15.4 GHz
Typical gain of >23.7 dB
Low noise input
Noise figure
2.1 dB typical at 12.7 GHz
2.4 dB typical at 15.4 GHz
High linearity input
≥2.0 dBm typical input third-order intercept (IIP3)
−8 dBm input 1 dB compression point (P1dB) at 15.4 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
VCC1
50Ω GND
SINGLE-ENDED
INPT
RBIAS
ADL5724
VCC2
OUTN 100Ω
DIFFERENTIAL
OUTP
DNC
DNC = DO NOT CONNECT.
DO NOT CONNECT TO THIS PIN.
Figure 1.
GENERAL DESCRIPTION
The ADL5724 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 12.7 GHz to 15.4 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 LNA 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 × 2.00 mm LFCSP package. The ADL5721 and
ADL5723 to ADL5726 family operates over the temperature
range of −40°C to +85°C.
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
1 page  
ADL5724
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltages
VCC1
VCC2
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range (Soldering, 60 sec)
Rating
2.25 V
4.1 V
150°C/W
−40°C to +85°C
−55°C to +125°C
−65°C to +150°C
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
Data Sheet
THERMAL RESISTANCE
θJA is thermal resistance, junction to ambient (°C/W), θJB is
thermal resistance, junction to board (°C/W), and θJC is thermal
resistance, junction to case (°C/W).
Table 4. Thermal Resistance
Package Type
θJA1
θJB1
θJC1 Unit
8-Lead LFCSP
39.90
23.88
3.71 °C/W
1 See JEDEC standard JESD51-2 for additional information on optimizing the
thermal impedance for a printed circuit board (PCB) with 3 × 4 vias.
ESD CAUTION
Rev. 0 | Page 4 of 12
5 Page 
ADL5724
EVALUATION BOARD
The ADL5724-EVALZ comes with an ADL5724 chip. It supports
a single 5 V supply for ease of use. Note that, for 5 V operation,
the 3.3 V and 1.8 V test loops are for evaluation purposes only.
When using a 3.3 V or 1.8 V supply, remove the R1 and R2
resistors from the evaluation board. Figure 19 shows the
ADL5724-EVALZ lab bench setup.
INITIAL SETUP
To set up the ADL5724-EVALZ, take the following steps:
1. Power up the ADL5724-EVALZ with a 5 V dc supply. The
supply current of the evaluation board is approximately
114 mA, which is a combination of the VCC1 (1.8 V) and
the VCC2 (3.3 V) currents.
2. Connect the signal generator to the input of theADL5724-
EVALZ.
3. Connect RFOP and RFON to a 180° hybrid that works
within the 12.7 GHz to 15.4 GHz frequency range.
4. Connect the difference output of the hybrid to the
spectrum analyzer. The sum port of the hybrid must be
terminated to 50 Ω.
See Figure 19 for the ADL5724-EVALZ lab bench setup.
Data Sheet
RESULTS
Figure 18 shows the expected results when testing the
ADL5724-EVALZ using the Rev. A version of the evaluation
board and its software. Note that future iterations of the software
may produce different results. See the ADL5724 product page
for the most recent software version.
Figure 18 shows the results of differential output for an input of
12.7 GHz at −15 dBm. The hybrid and board loss were not
deembedded.
20
RESOLUTION BANDWIDTH = 20kHz
10
VIDEO BANDWIDTH = 20kHz
SWEEP = 301ms (1001pts)
1
0
–10
–20
–30
–40
–50
–60
–70
–80
12.65 12.66 12.67 12.68 12.69 12.70 12.71 12.72 12.73 12.74 12.75
FREQUENCY (GHz)
Figure 18. Test Results at 12.7 GHz
+5V DC GND
INPUT
RF FREQUENCY GENERATOR
RFON
RFOP
SPECTRUM
ANALYZER
180° HYBRID FOR DIFFERENTIAL
TO SINGLE ENDED OUTPUT
Figure 19. ADL5724-EVALZ Lab Bench Setup
Rev. 0 | Page 10 of 12
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ADL5724.PDF ] | |
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