ADL5725 [ADI]
Point to point microwave radios;
| 型号： | ADL5725 |
| 厂家： | 
ADI |
| 描述： | Point to point microwave radios |
| 文件： | 总13页 (文件大小：437K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
17.7 GHz to 19.7 GHz, Low Noise Amplifier
ADL5725
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
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
ADL5725
VCC1
VCC2
OUTN
OUTP
DNC
GND
INPT
50Ω
SINGLE-ENDED
100Ω
DIFFERENTIAL
RBIAS
>−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
DNC = DO NOT CONNECT.
DO NOT CONNECT TO THIS PIN.
Figure 1.
APPLICATIONS
Point to point microwave radios
Instrumentation
Satellite communications (SATCOM)
Phased arrays
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.
Rev. 0
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
©2016 Analog Devices, Inc. All rights reserved.
www.analog.com
ADL5725* Product Page Quick Links
Last Content Update: 11/01/2016
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ADL5725
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Typical Performance Characteristics ..............................................6
Theory of Operation .........................................................................8
Applications Information .................................................................9
Layout .............................................................................................9
Differential vs. Single-Ended Output .........................................9
Evaluation Board ............................................................................ 10
Initial Setup ................................................................................. 10
Results.......................................................................................... 10
Basic Connections for Operation............................................. 11
Outline Dimensions....................................................................... 12
Ordering Guide .......................................................................... 12
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AC Specifications.......................................................................... 3
DC Specifications ......................................................................... 3
Absolute Maximum Ratings............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
REVISION HISTORY
4/16—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
Data Sheet
ADL5725
SPECIFICATIONS
AC SPECIFICATIONS
VCC1 = 1.8 V, VCC2 = 3.3 V, RBIAS = 357 Ω, T = 25°C, ZSOURCE = 50 Ω, ZLOAD = 100 Ω differential, unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
FREQUENCY RANGE
17.7
19.7
GHz
FREQUENCY = 17.7 GHz
Gain (S21)
Noise Figure
Input Third-Order Intercept (IIP3)
Input 1 dB Compression Point (P1dB)
Input Return Loss (S11)
Output Return Loss (S22)
FREQUENCY = 19.7 GHz
Gain (S21)
27.8
2.4
−1.5
−14
7
dB
dB
dBm
dBm
dB
Δf = 1 MHz, input power (PIN) = −30 dBm per tone
8
dB
25.1
2.4
dB
dB
Noise Figure
Input Third-Order Intercept (IIP3)
Input 1 dB Compression Point (P1dB)
Input Return Loss (S11)
Output Return Loss (S22)
Δf = 1 MHz, PIN = −30 dBm per tone
2.0
−11.5
10
dBm
dBm
dB
10
dB
DC SPECIFICATIONS
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
POWER INTERFACE
Voltage
VCC1
VCC2
1.65
3.1
1.8
3.3
1.95
3.5
V
V
Quiescent Current vs. Temperature
VCC1
TA = 25°C
−40°C ≤ TA ≤ +85°C
TA = 25°C
18
19
88
89
mA
mA
mA
mA
VCC2
−40°C ≤ TA ≤ +85°C
Rev. 0 | Page 3 of 12
ADL5725
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 3.
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).
Parameter
Rating
Supply Voltages
VCC1
2.25 V
VCC2
4.1 V
150°C
−40°C to +85°C
−55°C to +125°C
−65°C to +150°C
Table 4. Thermal Resistance
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range (Soldering, 60 sec)
1
1
1
Package Type
θJA
θJB
23.88
θJC
3.71
Unit
8-Lead LFCSP
39.90
°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.
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.
ESD CAUTION
Rev. 0 | Page 4 of 12
Data Sheet
ADL5725
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VCC1
GND
INPT
VCC2
OUTN
OUTP
DNC
1
2
3
8
7
6
5
ADL5725
TOP VIEW
(Not to Scale)
RBIAS 4
NOTES
1. DNC = DO NOT CONNECT. DO NOT
CONNECT TO THIS PIN.
2. THE EXPOSED PAD MUST BE
SOLDERED TO A LOW IMPEDANCE
GROUND PLANE.
3. THE DEVICE NUMBER ON THE FIGURE
DOES NOT INDICATE THE LABEL ON
THE PACKAGE. REFER TO THE PIN 1
INDICATOR FOR THE PIN LOCATIONS.
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
2
3
4
VCC1
GND
INPT
RBIAS
1.8 V Power Supply. It is recommended to place the decoupling capacitors as close to this pin as possible.
Ground.
RF Input. This is a 50 Ω single-ended input.
Resistor Bias. For typical operation, connect a 357 Ω resistor from RBIAS to GND. It is recommended to place
the RBIAS resistor as close to the pin as possible.
5
DNC
Do Not Connect. Do not connect to this pin.
6, 7
8
OUTP, OUTN
VCC2
EPAD (EP)
RF Outputs. These pins are 100 Ω differential outputs.
3.3 V Power Supply. It is recommended to place the decoupling capacitors as close to this pin as possible.
Exposed Pad. The exposed pad must be soldered to a low impedance ground plane.
Rev. 0 | Page 5 of 12
ADL5725
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
10
9
8
7
6
5
4
3
2
1
0
35
30
25
20
15
10
5
3.1V/1.65V
3.3V/1.8V
3.5V/1.95V
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
0
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 3. Gain vs. Frequency for Various Temperatures
Figure 6. Noise Figure vs. Frequency for Various Supply Voltages
35
15
3.1V/1.65V
3.3V/1.8V
3.5V/1.95V
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
10
5
30
25
20
15
10
5
0
–5
–10
–15
–20
–25
0
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 4. Gain vs. Frequency for Various Supply Voltages
Figure 7. Input P1dB vs Frequency for Various Temperatures
10
9
8
7
6
5
4
3
2
1
0
15
T
T
T
= –40°C
= +25°C
= +85°C
3.1V/1.65V
3.3V/1.8V
3.5V/1.95V
A
A
A
10
5
0
–5
–10
–15
–20
–25
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 8. Input P1dB vs. Frequency for Various Supply Voltages
Figure 5. Nosie Figure vs. Frequency for Various Temperatures
Rev. 0 | Page 6 of 12
Data Sheet
ADL5725
15
0
–5
T
T
T
= –40°C
= +25°C
= +85°C
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
A
A
A
10
5
–10
–15
–20
–25
–30
0
–5
–10
–15
–20
–25
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 9. Input IP3 vs. Frequency for Various Temperatures
Figure 11. Input Return Loss vs. Frequency for Various Temperatures
15
0
3.1V/1.65V
3.3V/1.8V
3.5V/1.95V
T
T
T
= –40°C
= +25°C
= +85°C
A
A
A
10
5
–5
–10
–15
–20
–25
–30
0
–5
–10
–15
–20
–25
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 10. Input IP3 vs. Frequency for Various Supply Voltages
Figure 12. Output Return Loss vs. Frequency for Various Temperatures
Rev. 0 | Page 7 of 12
ADL5725
Data Sheet
THEORY OF OPERATION
The ADL5725 is a narrow-band, high performance, low noise
amplifier targeting microwave radio link receiver designs. The
monolithic SiGe design is optimized for microwave radio link
bands ranging from 17.7 GHz to 19.7 GHz.
This LNA is ideal for driving Analog Devices differential
downconverters and RF sampling ADCs.
The ADL5725 provides cost-effective noise figure performance
without requiring more expensive III-V compounds process
technology.
The unique design of the ADL5725 offers a single-ended 50 Ω
input impedance via the INPT pin, and provides a 100 Ω
balanced differential output via the OUTP and OUTN pins.
The ADL5725 is available in a 2.00 mm × 2.00 mm LFCSP package,
and operates over the temperature range of −40°C to +85°C.
Rev. 0 | Page 8 of 12
Data Sheet
ADL5725
APPLICATIONS INFORMATION
10
9
8
7
6
5
4
3
2
1
0
LAYOUT
Solder the exposed pad on the underside of the ADL5725 to a
low thermal and electrical impedance ground plane. This pad is
typically soldered to an exposed opening in the solder mask on
the evaluation board. Connect the ground vias to all other
ground layers on the evaluation board to maximize heat
dissipation from the device package.
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
Figure 15. Noise Figure vs. Frequency
15
10
5
Figure 13. Evaluation Board Layout for the ADL5725 Package
0
DIFFERENTIAL vs. SINGLE-ENDED OUTPUT
–5
This section provides the test results that compare the ADL5725
using a differential vs. single-ended output. When using the
device as a single-ended output, use the RFOP output of the
evaluation board and terminate RFON to 50 Ω. Note that the
converse can be done as well; however, doing so produces
slightly different results from the plots shown in this section
because there is some amplitude imbalance between the two
differential ports, RFOP and RFON. The output trace and
connector loss were not deembedded for these measurements.
35
–10
–15
–20
–25
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
Figure 16. Input IP3 vs. Frequency
15
10
5
30
25
20
15
10
5
0
–5
–10
–15
–20
–25
0
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
17.7 17.9 18.1 18.3 18.5 18.7 18.9 19.1 19.3 19.5 19.7
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 17. Input P1dB vs. Frequency
Figure 14. Gain vs. Frequency
Rev. 0 | Page 9 of 12
ADL5725
Data Sheet
EVALUATION BOARD
The ADL5725-EVALZ comes with an ADL5725 chip. It supports
a single 5 V supply for ease of use. For 5 V operation, use the
3.3 V and 1.8 V test loops 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 ADL5725-
EVALZ evaluation board lab bench setup.
RESULTS
Figure 18 shows the expected results when testing the
ADL5725-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 ADL5725 product page
for the most recent software version.
INITIAL SETUP
Figure 18 shows the results of the differential output for an input
of 17.7 GHz at −15 dBm. The hybrid and board loss were not
deembedded.
To set up the ADL5725-EVALZ, take the following steps:
1. Power up the ADL5725-EVALZ with a 5 V dc supply. The
supply current of the evaluation board is approximately
111 mA, which is a combination of the VCC1 (1.8 V) and
the VCC2 (3.3 V) currents.
20
RESOLUTION BANDWIDTH = 20kHz
1
VIDEO BANDWIDTH = 20kHz
SWEEP = 301ms (1001pts)
10
0
2. Connect the signal generator to the input of the ADL5725-
EVALZ.
–10
–20
–30
–40
–50
3. Connect RFOP and RFON to a 180° hybrid that works
within the 17.7 GHz to 19.7 GHz frequency range.
4. Connect the difference output of the hybrid to the
spectrum analyzer. The sum port of hybrid must be
terminated to 50 Ω.
–60
–70
–80
See Figure 19 for the ADL5725-EVALZ lab bench setup.
17.65 17.66 17.67 17.68 17.69 17.70 17.71 17.72 17.73 17.74 17.75
FREQUENCY (GHz)
Figure 18. Test Results at 17.7 GHz
+5V DC
GND
SPECTRUM
ANALYZER
RFON
RFOP
INPUT
RF FREQUENCY GENERATOR
180° HYBRID FOR DIFFERENTIAL
TO SINGLE ENDED OUTPUT
Figure 19. ADL5725-EVALZ Lab Bench Setup
Rev. 0 | Page 10 of 12
Data Sheet
ADL5725
BASIC CONNECTIONS FOR OPERATION
Figure 20 shows the basic connections for operating the ADL5725 as it is implemented on the evaluation board of the device.
3.3V
1.8V
C2
C3
C5
C1
C4
C6
33PF
33PF
0.1UF
4.7NF
4.7NF
0.1UF
AGND
AGND
AGND
AGND
AGND
AGND
OUTN
1
572X_RFON
25-146-1000-92
CNSRI2516100092_SW109201A5
DUTA
PAD
4
3
2
2
1
2
3
4
8
7
6
5
VCC1
GND
INPT
VCC2
OUTN
OUTP
DNC
RFIN
AGND
1
RFIN
25-146-1000-92
CNSRI2516100092_SW109201A5
RBIAS
2
3 4
OUTP
1.8V
1
PAD
ADL5725
AGND
572X_RFOP
25-146-1000-92
CNSRI2516100092_SW109201A5
AGND
AGND
RBIAS
4
3
357
5V
RED
3P3V
RED
1P8V
RED
GND
BLK
AGND
AGND
1
1
1
1
R4
10K
DNI
R3
P1
1
2
AGND
5V
3.3V
1.8V
0
69157-102HLF
AGND
U1
ADM7170ACPZ-1.8
U2
ADM7172ACPZ-3.3
R1
0
R2
1.8V
3.3V
5V
1
2
8
7
5
4
3
5V
1
2
8
7
5
4
3
VOUT
VOUT
VIN
VIN
EN
SS
SENSE
VOUT1
VOUT2
VIN1
VIN2
EN
SS
SENSE
0
C7
4.7UF
C9
4.7UF
C10
4.7UF
C12
4.7UF
AGND
AGND
AGND
AGND
EP GND
PAD
EP GND
PAD
C8
1000PF
C11
1000PF
6
6
AGND
AGND
AGND
AGND
Figure 20. Evaluation Board Schematic
Table 6. Evaluation Board Configuration Options
Component
Function
Default Condition
Not applicable
Not applicable
RBIAS = 357 Ω (0402)
R1, R2 = 0 Ω (0402)
R3 = DNI (0402)
3P3V, 1P8V, GND, 5V
RFIN, 572X_RFOP, 572x_RFON
RBIAS
R1, R2
R3
Power supplies and ground.
Input, output, and data.
357 Ω for RBIAS.
1.8 V and 3.3 V regulator connections.
Do not install (DNI).
R4
Pull-up or pull-down resistor.
R4 = 10 kΩ (0402)
C1 to C12
The capacitors provide the required decoupling for the supply
related pins.
C1,C4 = 4.7 nF (0402),
C2, C3 = 33 pF (0402),
C5, C6 = 0.1 µF (0402),
C7, C9, C10, C12 = 4.7 µF (0603),
C8, C11 = 1000 pF (0603)
P1
U1
U2
DUTA
Jumper to change bands, 2-pin jumper.
ADM7170ACPZ-1.8 1.8 V regulator.
ADM7172ACPZ-3.3 3.3 V regulator.
ADL5725 device under test (DUT).
Not applicable
Not applicable
Not applicable
Not applicable
Rev. 0 | Page 11 of 12
ADL5725
Data Sheet
OUTLINE DIMENSIONS
1.70
1.60
1.50
2.10
2.00 SQ
1.90
0.50 BSC
8
5
0.15 REF
PIN 1 INDEX
EXPOSED
PAD
1.10
1.00
0.90
AREA
0.425
0.350
0.275
4
1
PIN 1
INDICATOR
(R 0.15)
TOP VIEW
BOTTOM VIEW
FOR PROPER CONNECTION OF
THE EXPOSED PAD, REFER TO
THE PIN CONFIGURATION AND
FUNCTION DESCRIPTIONS
0.60
0.55
0.50
0.05 MAX
0.02 NOM
SECTION OF THIS DATA SHEET.
SEATING
PLANE
0.30
0.25
0.20
0.20 REF
Figure 21. 8-Lead Lead Frame Chip Scale Package [LFCSP]
2.00 mm × 2.00 mm Body, and 0.55 mm Package Height
(CP-8-10)
Dimensions shown in millimeters
ORDERING GUIDE
Model1
Temperature Range
Package Description
Package Option
ADL5725ACPZN-R7
ADL5725-EVALZ
−40°C to +85°C
8-Lead Lead Frame Chip Scale Package [LFCSP]
Evaluation Board
CP-8-10
1 Z = RoHS-Compliant Part.
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D14318-0-4/16(0)
Rev. 0 | Page 12 of 12
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