AD ADL5542 50 mhz to 6 ghz rf/if gain block Datasheet

50 MHz to 6 GHz
RF/IF Gain Block
ADL5542
Fixed gain of 20 dB
Operation up to 6 GHz
Input/output internally matched to 50 Ω
Integrated bias control circuit
Output IP3
46 dBm at 500 MHz
40 dBm at 900 MHz
Output 1 dB compression: 20.6 dB at 900 MHz
Noise figure of 3 dB at 900 MHz
Single 5 V power supply
Small footprint 8-lead LFCSP
Pin compatible with 15 dB gain ADL5541
1 kV ESD (Class 1C)
FUNCTIONAL BLOCK DIAGRAM
RFIN 1
GND 2
INPUT
MATCH
OUTPUT
MATCH
BIAS CONTROL
GND 3
8
RFOUT
7
GND
6
GND
5
VPOS
ADL5542
CB 4
06879-001
FEATURES
Figure 1.
GENERAL DESCRIPTION
The ADL5542 is a broadband 20 dB linear amplifier that
operates at frequencies up to 6 GHz. The device can be used in
a wide variety of CATV, cellular, and instrumentation equipment.
The ADL5542 provides a gain of 20 dB that is stable over
frequency, temperature, power supply, and from device to
device. The device is internally matched to 50 Ω with an input
return loss of 10 dB or better, up to 6 GHz. Only input/output
ac coupling capacitors, power supply decoupling capacitors, and
an external inductor are required for operation.
The ADL5542 is fabricated on an InGaP HBT process and has
an ESD rating of 1 kV (Class 1C). The device is packaged in a
3 mm × 3 mm LFCSP that uses an exposed paddle for excellent
thermal impedance.
The ADL5542 consumes 93 mA on a single 5 V supply and is
fully specified for operation from −40°C to +85°C.
A fully populated RoHS-compliant evaluation board is
available.
The ADL5541 is a companion part that offers a gain of 15 dB in
a pin-compatible package.
Rev. A
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
©2007 Analog Devices, Inc. All rights reserved.
ADL5542
TABLE OF CONTENTS
Features .............................................................................................. 1
Typical Performance Characteristics ..............................................8
Functional Block Diagram .............................................................. 1
Basic Connections .......................................................................... 10
General Description ......................................................................... 1
Revision History ............................................................................... 2
Soldering Information and Recommended
PCB Land Pattern ....................................................................... 10
Specifications..................................................................................... 3
Evaluation Board ............................................................................ 11
Typical Scattering Parameters ..................................................... 5
Outline Dimensions ....................................................................... 12
Absolute Maximum Ratings............................................................ 6
Ordering Guide .......................................................................... 12
ESD Caution .................................................................................. 6
Pin Configuration and Function Descriptions ............................. 7
REVISION HISTORY
7/07—Revision 0: Initial Version
10/07—Rev. 0 to Rev. A
Changes to Figure 4 .......................................................................... 8
Change to Basic Connections Section ......................................... 10
Changes to Table 5 .......................................................................... 10
Change to Table 6 ........................................................................... 11
Deleted Notes from Ordering Guide Section ............................. 12
Rev. A | Page 2 of 12
ADL5542
SPECIFICATIONS
VPOS = 5 V and TA = 25°C, unless otherwise noted.
Table 1.
Parameter
OVERALL FUNCTION
Frequency Range
Gain (S21)
Input Return Loss (S11)
Output Return Loss (S22)
Reverse Isolation (S12)
FREQUENCY = 100 MHz
Gain
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
FREQUENCY = 500 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
FREQUENCY = 900 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
FREQUENCY = 2000 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
FREQUENCY = 2400 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
Conditions
Min
Typ
Max
Unit
6000
19.7
−15
−10
−22
MHz
dB
dB
dB
dB
20.2
19.6
38
2.7
dB
dBm
dBm
dB
50
900 MHz
Frequency 500 MHz to 5 GHz
Frequency 500 MHz to 5 GHz
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
18.4
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 3 dBm per tone
19.2
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
18
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
17.7
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
Rev. A | Page 3 of 12
19.5
±0.15
±0.1
±0.02
20.6
46
2.8
20.8
19.7
±0.03
±0.14
±0.02
20.6
40
3.0
20.8
18.7
±0.05
±0.23
±0.04
18
39
3.2
19.4
18.3
±0.05
±0.24
±0.04
16.8
38
3.5
18.9
3.2
3.3
3.6
3.8
dB
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
dBm
dBm
dB
ADL5542
Parameter
FREQUENCY = 3500 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
FREQUENCY = 5800 MHz
Gain
vs. Frequency
vs. Temperature
vs. Supply
Output 1 dB Compression Point
Output Third-Order Intercept
Noise Figure
POWER INTERFACE
Supply Voltage (VPOS)
Supply Current
vs. Temperature
Power Dissipation
Conditions
Min
Typ
Max
Unit
15.9
17.5
±0.04
±0.31
±0.04
13.7
33
3.7
18.8
dB
dB
dB
dB
dBm
dBm
dB
12.7
±0.03
±1.2
±0.04
6.8
24.2
5.7
14.4
5
93
±15
0.5
5.5
115
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
11.2
±50 MHz
−40°C ≤ TA ≤ +85°C
4.75 V to 5.25 V
Δf = 1 MHz, output power (POUT) = 0 dBm per tone
4.3
6.3
dB
dB
dB
dB
dBm
dBm
dB
Pin VPOS
4.5
−40°C ≤ TA ≤ +85°C
VPOS = 5 V
Rev. A | Page 4 of 12
V
mA
mA
W
ADL5542
TYPICAL SCATTERING PARAMETERS
VPOS = 5 V and TA = 25°C, the effects of the test fixture have been de-embedded up to the pins of the device.
Table 2.
Freq. (MHz)
50
100
500
900
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Magnitude (dB)
−23.9427
−29.6174
−34.5211
−37.74
−33.8877
−24.7749
−17.038
−9.60208
−8.00289
−7.91011
−12.816
−17.625
−12.8458
−10.9468
−5.69808
Angle (°)
−127.394
−153.6
+19.99577
+147.4543
+131.3191
−152.311
+178.4399
+153.1961
+128.6464
+103.6543
+96.79933
+156.5961
+173.0378
−154.419
−150.164
Magnitude (dB)
20.77572
20.51771
20.23355
20.07428
20.07369
19.80607
19.5708
19.26227
18.82098
18.18117
17.38515
17.57137
16.39804
15.13047
13.48849
Angle (°)
+170.5022
+170.3216
+152.6774
+132.0556
+127.0206
+101.2591
+76.03876
+49.85321
+24.3132
−1.63173
−26.2863
−52.0317
−77.6904
−102.402
−125.082
Rev. A | Page 5 of 12
Magnitude (dB)
−23.0076
−22.6572
−22.5262
−22.4939
−22.4386
−22.3087
−21.9922
−21.6433
−21.0921
−21.2002
−20.7711
−20.0291
−19.9498
−19.8825
−20.3196
Angle (°)
+3.044077
+1.38839
−10.9886
−21.2573
−23.7005
−35.6482
−48.9813
−60.9072
−76.3162
−91.6973
−103.208
−120.789
−136.697
−153.753
−170.25
Magnitude (dB)
−23.9476
−32.4194
−26.2358
−20.2616
−20.323
−16.2712
−12.759
−9.74244
−8.77595
−10.5739
−13.1628
−7.31571
−6.22666
−9.89228
−10.7825
Angle (°)
−132.996
−124.454
−129.115
−159.271
−160.866
+168.1644
+164.7149
+150.6577
+128.7323
+90.37487
+8.899607
−73.4032
−106.102
−111.644
−57.0274
ADL5542
ABSOLUTE MAXIMUM RATINGS
ESD CAUTION
Table 3.
Parameter
Supply Voltage, VPOS
Input Power (re: 50 Ω)
Internal Power Dissipation (Paddle Soldered)
θJC (Junction to Paddle)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Rating
6.5 V
10 dBm
650 mW
28.5°C/W
150°C
−40°C to +85°C
−65°C to +150°C
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. A | Page 6 of 12
ADL5542
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
GND 2
GND 3
CB 4
PIN 1
INDICATOR
ADL5542
TOP VIEW
(Not to Scale)
8 RFOUT
7 GND
6 GND
5 VPOS
06879-002
RFIN 1
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
1
2, 3, 6, 7
4
5
8
Exposed Paddle
Mnemonic
RFIN
GND
CB
VPOS
RFOUT
Description
RF Input. Requires a dc blocking capacitor.
Ground. Connect these pins to a low impedance ground plane.
Low Frequency Bypass. A 1 μF capacitor should be connected between this pin and ground.
Power Supply for Bias Controller. Connect directly to external power supply.
RF Output and Supply Voltage. DC bias is provided to this pin through an inductor that is tied to the
external power supply. RF path requires a dc blocking capacitor.
Exposed Paddle. Internally connected to GND. Solder to a low impedance ground plane.
Rev. A | Page 7 of 12
ADL5542
TYPICAL PERFORMANCE CHARACTERISTICS
45
50
45
OIP3 (0dBm)
40
35
OIP3 AND P1dB (dBm)
GAIN, P1dB, OIP3, NF (dB, dBm)
40
30
25
20
GAIN
15
P1dB
10
OIP3 (+25°C)
35
OIP3 (–40°C)
OIP3 (+85°C)
30
25
20
P1dB (+85°C)
15
10
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
P1dB (–40°C)
5
0
0.5 0.9 1.3 1.7 2.1 2.5 2.9 3.3 3.7 4.1 4.5 4.9 5.3 5.7
5.5
06879-006
06879-003
P1dB (+25°C)
NF
5
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 3. Gain, P1dB, OIP3, and Noise Figure vs. Frequency
Figure 6. OIP3 and P1dB vs. Frequency and Temperature
50
20
19
45
500MHz
18
–40°C
900MHz
40
17
OIP3 (dBm)
GAIN (dB)
+85°C
16
15
+25°C
14
35
2.4GHz
2GHz
30
3.5GHz
13
25
12
06879-007
10
0.5 0.9 1.3 1.7 2.1 2.5 2.9 3.3 3.7 4.1 4.5 4.9 5.3 5.7
20
06879-004
11
15
–3
0
3
6
9
12
18
15
POUT (dBm)
FREQUENCY (GHz)
Figure 4. Gain vs. Frequency and Temperature
Figure 7. OIP3 vs. Output Power (POUT) and Frequency
8
0
–5
S22
7
–15
NOISE FIGURE (dB)
S11, S22, S12 (dB)
–10
–20
S12
–25
–30
–35
6
5
+85°C
+25°C
4
S11
–40
–50
0
1
2
3
4
5
–40°C
2
0
6
06879-008
06879-005
3
–45
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 8. Noise Figure vs. Frequency and Temperature
Figure 5. Input Return Loss (S11), Output Return Loss (S22), and
Reverse Isolation (S12) vs. Frequency
Rev. A | Page 8 of 12
6.0
ADL5542
50
40
40
PERCENTAGE (%)
PERCENTAGE (%)
30
30
20
20
10
0
39.2
38.0
40.4
06879-011
06879-009
10
0
41.6
19.6
19.5
19.7
19.8
19.9
GAIN (dB)
OIP3 (dBm)
Figure 9. OIP3 Distribution at 900 MHz
Figure 11. Gain Distribution at 900 MHz
40
25
35
20
PERCENTAGE (%)
15
10
25
20
15
10
5
0
20.3
20.4
20.5
20.6
20.7
20.8
20.9
5
0
2.40
06879-012
06879-010
PERCENTAGE (%)
30
2.52
2.64
2.76
2.88
3.00
3.12
3.24
3.36
NOISE FIGURE (dB)
P1dB (dBm)
Figure 12. Noise Figure Distribution at 900 MHz
Figure 10. P1dB Distribution at 900 MHz
Rev. A | Page 9 of 12
3.48
ADL5542
BASIC CONNECTIONS
4.0
The basic connections for operating the ADL5542 are shown in
Figure 13. Recommended components are listed in Table 5. The
input and output should be ac-coupled with appropriately sized
capacitors (device characterization was performed with 33 pF
capacitors). A 5 V dc bias is supplied to the amplifier via VPOS
(Pin 5) and through a biasing inductor connected to RFOUT
(Pin 8). The bias voltage should be decoupled using a 1 μF
capacitor, a 1.2 nF capacitor, and two 68 pF capacitors.
NOISE FIGURE (dB)
3.5
3.0
2.5
VCC
C6
1µF
C5
1.2nF
C4
68pF
2.0
ADL5542
C1
33pF
RFIN
C2
33pF
GND 7
3 GND
GND 6
4 CB
GND
VPOS 5
VCC
C7
68pF
Figure 13. Basic Connections
For operation between 50 MHz and 500 MHz, a larger biasing
choke and ac coupling capacitors are necessary (see Table 5).
Figure 14 shows a plot of the input return loss, the output
return loss, and the gain with these components. At 100 MHz,
the ADL5542 achieves an OIP3 of 38 dBm (POUT = 0 dBm per
tone). The noise figure performance for operation from 50 MHz
to 500 MHz is shown in Figure 15. When operating below
50 MHz, the ADL5542 exhibits gain peaking, and the input
and output match degrade significantly.
21.0
200
250
300
350
400
450
500
SOLDERING INFORMATION AND RECOMMENDED
PCB LAND PATTERN
Figure 16 shows the recommended land pattern for the ADL5542.
To minimize thermal impedance, the exposed paddle on the
package underside should be soldered down to a ground plane
along with Pin 2, Pin 3, Pin 6, and Pin 7. If multiple ground
layers exist, they should be stitched together using vias (a
minimum of five vias is recommended). For more information
on land pattern design and layout, refer to Application Note
AN-772, A Design and Manufacturing Guide for the Lead Frame
Chip Scale Package (LFCSP).
2.03mm
PIN 1
10
PIN 8
0
–10
19.5
–20
S11
–30
19.0
RETURN LOSS (dB)
20.0
250
1.53mm
300
350
400
450
–50
500
FREQUENCY (MHz)
06879-014
200
PIN 5
Figure 16. Recommended Land Pattern
–40
18.5
150
PIN 4
1.78mm
0.71mm
S22
100
1.85mm
0.5mm
S21
06879-016
20.5
GAIN (dB)
150
Figure 15. Noise Figure vs. Frequency
C3
1µF
18.0
50
100
FREQUENCY (MHz)
06879-013
2 GND
1.5
50
RFOUT
1 RFIN RFOUT 8
06879-015
L1
47nH
Figure 14. Input Return Loss (S11), Output Return Loss (S22), and
Gain (S21) vs. Frequency
Table 5. Recommended Components for Basic Connections
Frequency
50 MHz to 500 MHz
500 MHz to 6000 MHz
C1
0.1 μF
33 pF
C2
0.1 μF
33 pF
C3
1 μF
1 μF
L1
470 nH (Coilcraft 0603LS-471NXJL_ or equivalent)
47 nH (Coilcraft 0603CS-47NXJL_ or equivalent)
Rev. A | Page 10 of 12
C4
68 pF
68 pF
C5
1.2 nF
1.2 nF
C6
1 μF
1 μF
C7
68 pF
68 pF
ADL5542
EVALUATION BOARD
W1
Figure 19 shows the schematic for the ADL5542 evaluation
board. The board is powered by a single 5 V supply.
VCC
C6
1µF
C5
1.2nF
C4
68pF
L1
47nH
C1
33pF
RFIN
ADL5542
RFOUT
1 RFIN RFOUT 8
2 GND
3 GND
4 CB
C3
1µF
06879-017
C2
33pF
GND 7
GND
GND 6
VPOS 5
DUT1
C7
68pF
C8
OPEN
C9
OPEN
VCC
06879-019
The components used on the board are listed in Table 6. Power
can be applied to the board through clip-on leads (VCC and
GND) or through a 2-pin header (W1).
Figure 19. Evaluation Board Schematic
06879-018
Figure 17. Evaluation Board Layout (Bottom)
Figure 18. Evaluation Board Layout (Top)
Table 6. Evaluation Board Configuration Options
Component
DUT1
C1, C2
C3
C4, C5, C6, C7, C8, C9
Function
Gain block
AC coupling capacitors
Low frequency bypass capacitor
Power supply decoupling capacitors
L1
VCC and GND
W1
DC bias inductor
Clip-on terminals for power supply
2-pin header for connection of ground and supply via cable
Rev. A | Page 11 of 12
Default Value
ADL5542
33 pF, 0402
1 μF, 0805
C4, C7 = 68 pF, 0603
C5 = 1.2 nF, 0603
C6 = 1 μF, 0805
C8, C9 = open
47 nH, 0603 (Coilcraft 0603CS-47NXJL_ or equivalent)
ADL5542
OUTLINE DIMENSIONS
3.25
3.00 SQ
2.75
0.60 MAX
5
2.95
2.75 SQ
2.55
TOP
VIEW
PIN 1
INDICATOR
8
12° MAX
0.50
0.40
0.30
0.70 MAX
0.65 TYP
1.60
1.45
1.30
EXPOSED
PAD
(BOTTOM VIEW)
4
0.90 MAX
0.85 NOM
0.50
BSC
0.60 MAX
1
PIN 1
INDICATOR
1.89
1.74
1.59
0.05 MAX
0.01 NOM
0.20 REF
061507-B
0.30
0.23
0.18
SEATING
PLANE
Figure 20. 8-Lead Lead Frame Chip Scale Package [LFCSP_VD]
3 mm × 3 mm Body, Very Thin, Dual Lead
(CP-8-2)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADL5542ACPZ-R7 1
ADL5542-EVALZ1
1
Temperature Range
−40°C to +85°C
Package Description
8-Lead LFCSP_VD, Tape and Reel
Evaluation Board
Z = RoHS Compliant Part.
©2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D06879-0-10/07(A)
Rev. A | Page 12 of 12
Package Option
CP-8-2
Branding
Q15