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400 MHz to 2700 MHz RF Driver Amplifier ADL5320
FEATURES
Operation: 400 MHz to 2700 MHz Gain of 17 dB at 880 MHz OIP3 of 45 dBm at 880 MHz P1dB of 25.4 dBm at 880 MHz Noise figure: 4 dB at 880 MHz Power supply: 5 V Power supply current: 104 mA typical Internal active biasing Thermally efficient SOT-89 package ESD rating of 4 kV (Class 3A)
FUNCTIONAL BLOCK DIAGRAM
GND
(2)
ADL5320
BIAS
05840-001
1
2
3
RFIN
GND
RFOUT
Figure 1.
GENERAL DESCRIPTION
The ADL5320 is a broadband, linear driver RF amplifier that operates at frequencies from 400 MHz to 2700 MHz. The device can be used in a wide variety of wired and wireless applications, including ISM, WLL, PCS, GSM, CDMA, and W-CDMA. The ADL5320 operates with a 5 V supply voltage and a supply current of 104 mA. The ADL5320 is fabricated on a GaAs HBT process. The device is packaged in a low cost SOT-89 that uses an exposed paddle for excellent thermal impedance. It operates from -40C to +85C, and a fully populated evaluation board is available.
Rev. 0
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 www.analog.com Fax: 781.461.3113 (c)2008 Analog Devices, Inc. All rights reserved.
ADL5320 TABLE OF CONTENTS
Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Typical Scattering Parameters ..................................................... 4 Absolute Maximum Ratings............................................................ 5 ESD Caution .................................................................................. 5 Pin Configuration and Function Descriptions ............................. 6 Typical Performance Characteristics ..............................................7 Basic Layout Connections ............................................................. 11 Soldering Information and Recommended PCB Land Pattern .......................................................................................... 11 Matching Procedure................................................................... 12 W-CDMA ACPR Performance ................................................ 13 Evaluation Board ............................................................................ 14 Outline Dimensions ....................................................................... 16 Ordering Guide .......................................................................... 16
REVISION HISTORY
2/08--Revision 0: Initial Version
Rev. 0 | Page 2 of 16
ADL5320 SPECIFICATIONS
VSUP = 5 V and TA = 25C, unless otherwise noted. Table 1.
Parameter OVERALL FUNCTION Frequency Range FREQUENCY = 880 MHz Gain 1 vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure FREQUENCY = 2140 MHz Gain1 vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure FREQUENCY = 2600 MHz Gain1 vs. Frequency vs. Temperature vs. Supply Output 1 dB Compression Point Output Third-Order Intercept Noise Figure POWER INTERFACE Supply Voltage Supply Current vs. Temperature Power Dissipation
1
Conditions
Min 400 16.3
Typ
Max 2700
Unit MHz dB dB dB dB dBm dBm dB dB dB dB dB dBm dBm dB dB dB dB dB dBm dBm dB V mA mA mW
50 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, POUT = 10 dBm per tone
16.9 0.3 0.6 0.1 25.4 45 4.1 13.2 0.33 0.8 0.06 25.7 42 4.4 12.5 0.6 1.1 0.1 27.4 37 5.1 5 104 6.0 520
17.5
12.4 50 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, POUT = 10 dBm per tone
14.0
11.5 100 MHz -40C TA +85C 4.75 V to 5.25 V f = 1 MHz, POUT = 10 dBm per tone Pin RFOUT 4.5 -40C TA +85C VSUP = 5 V
13.4
5.5 124
Guaranteed maximum and minimum specified limits on this parameter are based on 6 sigma calculations.
Rev. 0 | Page 3 of 16
ADL5320
TYPICAL SCATTERING PARAMETERS
VSUP = 5 V and TA = 25C; the effects of the test fixture have been de-embedded up to the pins of the device. Table 2.
Freq (MHz) 400 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200 2250 2300 2350 2400 2450 2500 2550 2600 2650 2700 S11 Magnitude (dB) -1.51 -1.38 -1.42 -1.46 -1.46 -1.50 -1.56 -1.61 -1.66 -1.72 -1.85 -1.92 -2.02 -2.20 -2.41 -2.62 -2.87 -3.16 -3.65 -4.09 -4.59 -5.28 -6.09 -6.98 -8.06 -9.38 -11.15 -13.20 -15.83 -19.87 -24.51 -22.66 -18.02 -14.34 -12.10 -10.23 -8.65 -7.90 -6.66 -6.35 -5.77 -5.51 -5.35 -5.15 -5.22 -5.06 Angle () 164.18 155.33 151.34 147.66 144.12 140.66 137.19 133.97 130.74 127.65 124.15 120.90 117.54 114.21 110.72 107.22 103.77 99.97 96.51 92.23 88.76 84.62 80.71 77.02 72.69 68.92 66.21 63.18 63.73 71.29 103.69 156.61 171.65 174.52 172.15 166.81 160.58 153.80 145.88 138.01 128.87 118.44 112.21 99.40 92.84 82.21 S21 Magnitude (dB) 14.18 14.03 13.79 13.72 13.53 13.45 13.21 13.29 13.04 13.03 12.92 12.93 12.92 12.76 12.97 12.69 12.98 12.87 12.94 12.87 13.04 13.00 12.89 13.13 13.07 13.00 12.97 13.18 13.03 12.84 13.08 12.86 12.88 12.63 12.45 12.65 11.82 11.84 11.55 10.97 10.36 9.65 9.46 7.99 7.70 6.61 Angle () +128.37 +118.16 +112.76 +108.71 +104.05 +98.89 +95.44 +90.33 +86.67 +81.59 +77.91 +73.13 +68.80 +64.12 +59.95 +54.62 +50.95 +44.96 +40.47 +35.36 +30.47 +24.40 +19.39 +14.80 +7.27 +2.17 -3.27 -9.57 -17.27 -22.35 -29.10 -36.58 -43.14 -51.83 -55.83 -67.28 -73.99 -79.82 -91.28 -96.39 -108.43 -110.92 -122.10 -130.39 -132.72 -143.64 S12 Magnitude (dB) -32.37 -31.75 -31.68 -31.46 -31.56 -31.13 -31.12 -31.00 -30.60 -30.72 -30.31 -30.22 -29.98 -29.80 -29.39 -29.46 -29.03 -28.75 -28.81 -28.26 -28.43 -28.13 -27.96 -27.98 -27.73 -27.49 -27.78 -27.23 -27.36 -27.40 -27.26 -27.33 -27.33 -27.54 -27.77 -27.74 -28.34 -28.62 -28.92 -29.75 -30.13 -30.41 -32.29 -31.60 -33.19 -33.61 Angle () +6.77 +1.48 -3.93 -4.60 -6.81 -9.87 -11.14 -13.96 -14.90 -17.78 -20.23 -22.21 -24.19 -28.18 -29.56 -33.00 -37.13 -38.18 -44.64 -46.78 -49.56 -56.47 -59.31 -62.71 -69.93 -73.80 -77.79 -85.28 -89.22 -96.30 -102.96 -109.25 -117.37 -124.60 -132.56 -141.32 -149.30 -161.50 -165.89 +179.97 +170.82 +163.00 +152.20 +138.60 +135.12 +120.22 S22 Magnitude (dB) -3.44 -3.70 -3.79 -3.83 -3.90 -3.99 -4.02 -4.07 -4.12 -4.21 -4.25 -4.27 -4.32 -4.37 -4.43 -4.42 -4.47 -4.44 -4.45 -4.40 -4.37 -4.29 -4.20 -4.05 -3.88 -3.71 -3.59 -3.29 -3.11 -2.93 -2.69 -2.54 -2.50 -2.35 -2.44 -2.42 -2.43 -2.74 -2.62 -2.94 -3.03 -3.24 -3.41 -3.55 -3.80 -3.93 Angle () 160.94 156.73 154.66 152.89 151.08 149.38 147.87 146.36 144.94 143.60 142.41 141.31 140.51 139.63 138.68 138.09 137.74 137.08 136.77 136.49 136.43 135.79 135.63 135.39 134.43 133.76 132.94 131.04 129.62 127.46 124.63 122.53 118.78 115.97 112.52 108.19 104.65 100.98 96.52 92.52 88.07 83.25 79.98 73.08 69.85 63.87
Rev. 0 | Page 4 of 16
ADL5320 ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Supply Voltage, VSUP Input Power (50 Impedance) Internal Power Dissipation (Paddle Soldered) JC (Junction to Paddle) Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Rating 6.5 V 20 dBm 683 mW 28.5C/W 150C -40C to +85C -65C to +150C
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Rev. 0 | Page 5 of 16
ADL5320 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
RFIN 1
ADL5320
GND 2 TOP VIEW (2) GND (Not to Scale)
05840-002
RFOUT 3
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. 1 2 3 Exposed Paddle Mnemonic RFIN GND RFOUT Description RF Input. Requires a dc blocking capacitor. Ground. Connect to a low impedance ground plane. RF Output and Supply Voltage. DC bias is provided to this pin through an inductor that is connected to the external power supply. RF path requires a dc blocking capacitor. Expose Paddle. Internally connected to GND. Solder to a low impedance ground plane.
Rev. 0 | Page 6 of 16
ADL5320 TYPICAL PERFORMANCE CHARACTERISTICS
50 45
GAIN, NF (dB); P1dB, OIP3 (dBm)
50 OIP3 (10dBm) 45
OIP3 (+25C) OIP3 (+85C) OIP3 (-40C)
30
40 35
29
40 P1dB
28
25 20 15 10
35
27
GAIN
30
P1dB (-40C) P1dB (+85C) P1dB (+25C)
26
25
05840-003
25
05840-006
05870-007 05840-008
5 0 800 820 840
NF
860 880 900 FREQUENCY (MHz)
920
940
960
20 800
820
840
860 880 900 FREQUENCY (MHz)
920
940
24 960
Figure 3. Gain, P1dB, OIP3, and Noise Figure vs. Frequency, 800 MHz to 960 MHz
19.0 18.5 18.0 17.5
GAIN (dB)
-40C
Figure 6. OIP3 and P1dB vs. Frequency and Temperature, 800 MHz to 960 MHz
50 930MHz 46 880MHz
OIP3 (dBm)
17.0 16.5 16.0 15.5 15.0 14.5 14.0 800 820 840
+85C
+25C
42 960MHz 38 850MHz 830MHz
34
05840-004
860 880 900 FREQUENCY (MHz)
920
940
960
30 -2
0
2
4
6
8
10
12
14
16
18
20
22
POUT (dBm)
Figure 4. Gain vs. Frequency and Temperature, 800 MHz to 960 MHz
Figure 7. OIP3 vs. POUT and Frequency, 800 MHz to 960 MHz
-25.0 -25.5 -26.0 -26.5
S12 (dB)
0 -5 -10 -15 -20 S12 -25 S11 -30 -35
05840-005
7.0 6.5 6.0
S22
S11 (dB) AND S22 (dB)
5.5
NF (dB)
5.0 4.5 4.0 3.5 3.0 2.5 2.0 700 750
+85C
-27.0 -27.5 -28.0 -28.5 -29.0 700
+25C
-40C
750
800 850 900 FREQUENCY (MHz)
950
-40 1000
800 850 900 FREQUENCY (MHz)
950
1000
Figure 5. Input Return Loss (S11), Output Return Loss (S22), and Reverse Isolation (S12) vs. Frequency, 800 MHz to 960 MHz
Figure 8. Noise Figure vs. Frequency and Temperature, 800 MHz to 960 MHz
Rev. 0 | Page 7 of 16
P1dB (dBm)
OIP3 (dBm)
30
ADL5320
45 40 OIP3 (10dBm)
45 43 41 OIP3 (-40C) 29.0 28.5 28.0 OIP3 (+85C) OIP3 (+25C) 27.5 27.0 37 35 33 31 P1dB (+25C) P1dB (+85C) 29 2060 2080 2100 2120 2140 2160 FREQUENCY (MHz) 2180 2200 24.5 2220 P1dB (-40C) 26.5 26.0 25.5
05840-012
05840-014
GAIN, NF (dB); P1dB, OIP3 (dBm)
35 30 25 20 15 10 5 0 2060 2080 2100 GAIN
NF 2120 2140 2160 FREQUENCY (MHz) 2180 2200 2220
Figure 9. Gain, P1dB, OIP3, and Noise Figure vs. Frequency, 2060 MHz to 2200 MHz
16
05840-009
25.0
Figure 12. OIP3 and P1dB vs. Frequency and Temperature, 2060 MHz to 2200 MHz
43
2190MHz
15
-40C
41
2060MHz 2090MHz
2140MHz
14
GAIN (dB)
39
OIP3 (dBm)
+25C
2220MHz
37
13
+85C
12
35
11
05840-010
33
05870-013
10 2060
2080
2100
2120 2140 2160 FREQUENCY (MHz)
2180
2200
2220
31 -2
0
2
4
6
8
10
12
14
16
18
20
22
POUT (dBm)
Figure 10. Gain vs. Frequency and Temperature, 2060 MHz to 2200 MHz
Figure 13. OIP3 vs. POUT and Frequency, 2060 MHz to 2200 MHz
8.0 7.5 7.0 6.5
-23
0 -5 S22 -10 -15 -20 S12 -25 -30
-24
S11 (dB) AND S22 (dB)
-25
6.0
NF (dB)
S12 (dB)
S11 -26
5.5 5.0 4.5 4.0 3.5 3.0 2.5
-40C
+85C +25C
-27
-28
-35
05840-011
-29 1900
1950
2000
2050 2100 2150 FREQUENCY (MHz)
2200
2250
-40 2300
2.0 1900
1950
2000
2050 2100 2150 FREQUENCY (MHz)
2200
2250
2300
Figure 11. Input Return Loss (S11), Output Return Loss (S22), and Reverse Isolation (S12) vs. Frequency, 2060 MHz to 2200 MHz
Figure 14. Noise Figure vs. Frequency and Temperature, 2060 MHz to 2200 MHz
Rev. 0 | Page 8 of 16
P1dB (dBm)
OIP3 (dBM)
P1dB
39
ADL5320
40 35
GAIN, NF (dB); P1dB, OIP3 (dBm)
39 32 OIP3 (-40C) OIP3 (+25C) OIP3 (+85C) 30 29 P1dB (-40C) 28 P1dB (+25C) 27 P1dB (+85C) 26 25 2700
05840-018
OIP3 (10dBm)
38 37
31
30
36
20 15 10 5 GAIN
34 33 32 31
0 2500 2520 2540 2560 2580 2600 2620 2640 2660 2680 2700 FREQUENCY (MHz)
05840-015
NF
30 29 2500 2550 2600 FREQUENCY (MHz) 2650
Figure 15. Gain, P1dB, OIP3, and Noise Figure vs. Frequency, 2500 MHz to 2700 MHz
15
Figure 18. OIP3 and P1dB vs. Frequency and Temperature, 2500 MHz to 2700 MHz
46 44
14 -40C 13 OIP3 (dBm)
GAIN (dB)
42 40 38 36 34 2500MHz 2700MHz 2600MHz
+25C 12 +85C
11
10
32
05840-016
9 2500
2550
2600 FREQUENCY (MHz)
2650
2700
30 -3
-1
1
3
5
7
9 11 13 POUT (dBm)
15
17
19
21
23
Figure 16. Gain vs. Frequency and Temperature, 2500 MHz to 2700 MHz
-25.0 -25.5 -26.0 0 -5 -10 -26.5 S22 -15 S11 S12 -20 -25 -30 -29.0 -29.5 -30.0 2400 2450 2500 2550 2600 2650 FREQUENCY (MHz) 2700 2750 -35
05840-017
Figure 19. OIP3 vs. POUT and Frequency, 2500 MHz to 2700 MHz
8.0 7.5 7.0
S11 (dB) AND S22 (dB)
6.5 6.0
+85C
S12 (dB)
NF (dB)
-27.0 -27.5 -28.0 -28.5
5.5 5.0 4.5 4.0 3.5 3.0
+25C
-40C
-40 2800
2.0 2400
2450
2500
2550 2600 2650 FREQUENCY (MHz)
2700
2750
2800
Figure 17. Input Return Loss (S11), Output Return Loss (S22), and Reverse Isolation (S12) vs. Frequency, 2500 MHz to 2700 MHz
Figure 20. Noise Figure vs. Frequency and Temperature, 2500 MHz to 2700 MHz
Rev. 0 | Page 9 of 16
05840-020
2.5
05840-019
P1dB (dBm)
OIP3 (dBm)
25
P1dB
35
ADL5320
18 16 14 40 50
PERCENTAGE (%)
PERCENTAGE (%)
05840-021
12 10 8 6 4 2 0 42.0 42.8 43.6 44.4 45.2 46.0 46.8 47.6 OIP3 (dBm)
30
20
10
05840-024
0
3.80
3.88
3.96
4.04 NF (dB)
4.12
4.20
4.28
Figure 21. OIP3 Distribution at 880 MHz
60
Figure 24. Noise Figure Distribution at 880 MHz
120 115 5.25V 110 105 100 95 4.75V 90 85 80 -40 -30 -20 -10
05840-025
50
PERCENTAGE (%)
40
SUPPLY CURRENT (mA)
5.0V
30
20
10
05840-022
0
24.4
24.8
25.2
25.6 P1dB (dBm)
26.0
26.4
26.8
0 10 20 30 40 TEMPERATURE (C)
50
60
70
80
Figure 22. P1dB Distribution at 880 MHz
Figure 25. Supply Current vs. Supply Voltage and Temperature (Using 880 MHz Matching Components)
30
25
PERCENTAGE (%)
20
15
10
5
05840-023
0
16.65
16.75
16.85
16.95 GAIN (dB)
17.05
17.15
17.25
Figure 23. Gain Distribution at 880 MHz
Rev. 0 | Page 10 of 16
ADL5320 BASIC LAYOUT CONNECTIONS
The basic connections for operating the ADL5320 are shown in Figure 26. Table 5 lists the required matching components. Capacitors C1, C2, C3, C4, and C7 are Murata GRM155 series (0402 size) and Inductor L1 is a Coilcraft 0603CS series (0603 size). For all frequency bands, the placement of C3 and C7 are critical. From 2300 MHz to 2700 MHz, the placement of C2 is also important. Table 6 lists the recommended component placement for various frequencies. A 5 V dc bias is supplied through L1 which is connected to RFOUT (Pin 3). In addition to C4, 10 nF and 10 F power supply decoupling capacitors are also required. The typical current consumption for the ADL5320 is 110 mA.
GND VSUP C6 10F
SOLDERING INFORMATION AND RECOMMENDED PCB LAND PATTERN
Figure 27 shows the recommended land pattern for the ADL5320. To minimize thermal impedance, the exposed paddle on the SOT-89 package underside is soldered down to a ground plane along with Pin 2. If multiple ground layers exist, they should be stitched together using vias. For more information on land pattern design and layout, refer to the Application Note AN-772, A Design and Manufacturing Guide for the Lead Frame Chip Scale Package (LFCSP).
1.80mm
3.48mm
GND
C5 10nF C41 5.56mm 0.20mm
(2)
ADL5320
L11
RFIN
GND
RFOUT
RFIN
C11
12 C31
1
2
3
22
32
1 42 C2
RFOUT
0.86mm
0.62mm
05840-026
C71
1.27mm
1.50mm 3.00mm
Figure 26. Basic Connections
Figure 27. Recommended Land Pattern
Table 5. Recommended Components for Basic Connections
Frequency (MHz) 450 to 500 800 to 960 1805 to 1880 1930 to 1990 2110 to 2170 2300 to 2400 2500 to 2700 C1 (pF) 100 47 22 22 22 12 12 C2 (pF) 100 47 22 22 22 2.2 1.0 C3 (pF) 18 6.8 0.5 0.5 0.5 1.2 1.8 C4 (pF) 100 100 22 22 22 12 12 C7 (pF) 6.8 2.2 1.5 1.5 1.5 1.0 0.5 L1 (nH) 47 47 15 15 15 15 15
Table 6. Matching Component Spacing
Frequency (MHz) 450 to 500 800 to 960 1805 to 2170 2300 to 2400 2500 to 2700 1 (mils) 391 200 300 225 142 2 (mils) 75 75 75 75 75 3 (mils) 364 100 175 125 89 4 (mils) 50 350 275 125 75
Rev. 0 | Page 11 of 16
05840-027
1SEE 2SEE
TABLE 5 FOR FREQUENCY SPECIFIC COMPONENTS. TABLE 10 FOR RECOMMENDED COMPONENT SPACING.
ADL5320
MATCHING PROCEDURE
The ADL5320 is designed to achieve excellent gain and IP3 performance. To achieve this, both input and output matching networks must present specific impedance to the device. The matching components listed in Table 6 were chosen to provide -10 dB input return loss while maximizing OIP3. The load-pull plots (Figure 28, Figure 29, and Figure 30) show the load impedance points on the Smith chart where optimum OIP3, gain, and output power can be achieved. These load impedance values (that is, the impedance that the device sees when looking into the output matching network) are listed in Table 7 and Table 8 for maximum gain and maximum OIP3, respectively. The contours show how each parameter degrades as it is moved away from the optimum point. From the data shown in Table 7 and Table 8 it becomes clear that maximum gain and maximum OIP3 do not occur at the same impedance. This can also be seen on the load-pull contours in Figure 28 through Figure 30. Thus, output matching generally involves compromising between gain and OIP3. In addition, the load-pull plots demonstrate that the quality of the output impedance match must be compromised to optimize gain and/or OIP3. In most applications where line lengths are short and where the next device in the signal chain presents a low input return loss, compromising on the output match is acceptable. To adjust the output match for operation at a different frequency or if a different trade-off between OIP3, gain, and output impedance is desired, the following procedure is recommended. For example, to optimize the ADL5320 for optimum OIP3 and gain at 700 MHz use the following steps: 1. 2. Install the recommended tuning components for a 800 MHz to 960 MHz tuning band, but do not install C3 and C7. Connect the evaluation board to a vector network analyzer so that input and output return loss can be viewed simultaneously. Starting with the recommended values and positions for C3 and C7, adjust the positions of these capacitors along the transmission line until the return loss and gain are acceptable. Push-down capacitors that are mounted on small sticks can be used in this case as an alternative to soldering. If moving the component positions does not yield satisfactory results, then the values of C3 and C7 should be increased or decreased (most likely increased in this case as the user is tuning for a lower frequency). Repeat the process. Once the desired gain and return loss are realized, OIP3 should be measured. Most likely, it will be necessary to go back and forth between return loss/gain and OIP3 measurements (probably compromising most on output return loss) until an acceptable compromise is achieved.
Rev. 0 | Page 12 of 16
Figure 28. Load-Pull Contours, 880 MHz
Figure 29. Load-Pull Contours, 2140 MHz
3.
Figure 30. Load-Pull Contours, 2600 MHz
4.
05840-030
05840-029
05840-028
ADL5320
Table 7. Load Conditions for Gain MAX
Frequency (MHz) 880 2140 2600 Load (Magnitude) 0.5147 0.6611 0.5835 Load () 159.88 134.40 133.80 Gain MAX (dB) 17.76 13.78 12.36
The ADL5320 achieves an ACPR of -82 dBc at 0 dBm output, at which point device noise and not distortion is beginning to dominate the power in the adjacent channels. At an output power of 10 dBm, ACPR is still very low at -70 dBc making the device particularly suitable for PA driver applications.
-30
ACPR @ 5MHz CARRIER OFFSET (dBc)
Table 8. Load Conditions for IP3 MAX
Frequency (MHz) 880 2140 2600 Load (Magnitude) 0.4156 0.5035 0.4595 Load () -138.22 +110.27 +102.48 IP3 MAX (dBm) 46.29 42.72 43.01
-40
-50
-60
-70
W-CDMA ACPR PERFORMANCE
Figure 31 shows a plot of adjacent channel power ratio (ACPR) vs. POUT for the ADL5320. The signal type being used is a single W-CDMA carrier (Test Model 1-64) at 2140 MHz. This signal is generated by a very low ACPR source. ACPR is measured at the output by a high dynamic range spectrum analyzer, which incorporates an instrument noise correction function.
-80
05840-031
-90 -20
-15
-10
-5
0 5 POUT (dBm)
10
15
20
Figure 31. ACPR vs. POUT, Single Carrier W-CDMA (Test Model 1-64) at 2140 MHz Evaluation Board
Rev. 0 | Page 13 of 16
ADL5320 EVALUATION BOARD
The schematic of the ADL5320 evaluation board is shown in Figure 32. This evaluation board uses 25 mil wide traces and is made from FR4 material. The evaluation board comes tuned for operation in the 1805 MHz to 2140 MHz tuning band. Tuning options for other frequency bands are also provided in Table 9. The recommended placement for these components is provided in Table 10. The inputs and outputs should be ac-coupled with appropriately sized capacitors. DC bias is provided to the amplifier via an inductor connected to the RFOUT pin. A bias voltage of 5 V is recommended.
GND VSUP C6 10F
10uF 10nF C1 22pF C3 0.5pF 22pF 15nH C7 1.5pF C2 22pF
GND
C5 10nF
05840-033
(2)
C4 22pF
ADL5320
RFIN
RFIN 1 2
RFOUT
GND
C1 22pF
L1 15nH 3 2 3 4 C7 1.5pF
1 C3 0.5pF
C2 22pF
RFOUT
05840-032
Figure 33. Evaluation Board Layout and Default Component Placement for Operation from 1805 MHz to 2170 MHz
Figure 32. Evaluation Board, 1805 MHz to 2170 MHz
Table 9. Evaluation Board Configuration Options
1805 MHz to 2170 MHz (Default Configuration) 0402, 22pF C4 = 0402 22pF C5 = 0603 10 nF C6 = 1206 10 F 0603, 15 nH C3 = 0402 0.5 pF C7 = 0402 1.5 pF VSUP red test loop, GND black test loop 2300 MHz to 2400 MHz C1= 0402 12 pF C2 = 0402 2.2 pF C4 = 0603 12 pF C5 = 0603 10 nF C6 = 1206 10 F 0603, 15 nH C3 = 0402 1.2 pF C7 = 0402 1.0 pF R1 = 0402 0 VSUP red test loop, GND black test loop 2500 MHz to 2700 MHz C1 = 0402 12 pF C2 = 0402 1.0 pF C4 = 0603 12 pF C5 = 0603 10 nF C6 = 1206 10 F 0603, 15 nH C3 = 0402 1.8 pF C7 = 0402 0.5 pF R1 = 0402 0 VSUP red test loop, GND black test loop
Component C1, C2 C4, C5, C6
L1 C3, C7 R1 VSUP, GND
Function AC coupling capacitors Power supply bypassing capacitors DC bias inductor Tuning capacitors Power supply connections
450 MHz to 500 MHz 0402, 100 pF C4 = 0603 100 pF C5 = 0603 10 nF C6 = 1206 10 F 0603, 47 nH C3 = 0402 18 pF C7 = 0402 6.8 pF VSUP red test loop, GND black test loop
800 MHz to 960 MHz 0402, 47 pF C4 = 0603 100 pF C5 = 0603 10 nF C6 = 1206 10 F 0603, 47 nH C3 = 0402 6.8 pF C7 = 0402 2.2 pF VSUP red test loop, GND black test loop
Table 10. Recommended Component Spacing on Evaluation Board
Frequency (MHz) 450 to 500 800 to 960 1805 to 2170 2300 to 2400 2500 to 2700 1 (mils) 391 200 300 225 142 2 (mils) 75 75 75 75 75 3 (mils) 364 100 175 125 89 4 (mils) 50 350 275 125 75
Rev. 0 | Page 14 of 16
ADL5320
10uF 10nF C1 100pF C3 18pF 100pF 47nH C7 6.8pF C2 100pF C1 12pF C3 1.2pF 15nH C7 1pF
10uF 10nF 12pF
C2 2.2pF
R1 0
Figure 34. Evaluation Board Layout and Component Placement 450 MHz to 500 MHz Operation
05840-037
Figure 36. Evaluation Board Layout and Component Placement 2300 MHz to 2400 MHz Operation
10uF 10nF C1 47pF C3 6.8pF 100pF 47nH C7 2.2pF C2 47pF C1 12pF C3 1.8pF 15nH C7 0.5pF
10uF 10nF 12pF
C2 1.0pF
R1 0
05840-034
Figure 35. Evaluation Board Layout and Component Placement 800 MHz to 960 MHz Operation
Figure 37. Evaluation Board Layout and Component Placement 2500 MHz to 2700 MHz Operation
Rev. 0 | Page 15 of 16
05840-036
05840-035
ADL5320 OUTLINE DIMENSIONS
*1.55 REF 4.25 3.94
1 (2)
2.60 2.30
3
2
1.50 TYP 3.00 TYP 4.60 4.40
1.20 0.90
0.44 0.35 *0.58 0.40 END VIEW *0.52 0.32
1.60 1.40
*COMPLIANT TO JEDEC STANDARDS TO-243 WITH EXCEPTION TO DIMENSIONS INDICATED BY AN ASTERISK.
Figure 38. 3-Lead Small Outline Transistor Package [SOT-89] (RK-3) Dimensions shown in millimeters
ORDERING GUIDE
Model ADL5320ARKZ-R7 1 ADL5320-EVALZ1
1
Temperature Range -40C to +85C
Package Description 3-Lead SOT-89, 7" Tape and Reel Evaluation Board
040407-A
Package Option RK-3
Z = RoHS Compliant Part.
(c)2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05840-0-2/08(0)
Rev. 0 | Page 16 of 16

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