ANALOG DEVICES ADL5541 Service Manual
50 MHz to 6 GHz
FEATURES
Fixed gain of 15 dB
Operation up to 6 GHz
Input/output internally matched to 50 Ω
Integrated bias control circuit
Output IP3
44 dBm at 500 MHz
40 dBm at 900 MHz
Output 1 dB compression: 19.7 dBm at 900 MHz
Noise figure of 3.5 dB at 900 MHz
Single 5 V power supply
Small footprint 8-lead LFCSP
Pin compatible with 20 dB gain ADL5542
1 kV ESD (Class 1C)
GENERAL DESCRIPTION
The ADL5541 is a broadband 15 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 ADL5541 provides a gain of 15 dB, which 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.
RF/IF Gain Block
ADL5541
FUNCTIONAL BLOCK DIAGRAM
RFIN
GND
GND
CB
MATCH
2
3
4
BIAS CONTROL
ADL5541
INPUT
1
The ADL5541 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 ADL5541 consumes 90 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 ADL5542 is a companion part that offers a gain of 20 dB in
a pin-compatible package.
Figure 1.
OUTPUT
MATCH
8
7
6
5
RFOUT
GND
GND
VPOS
06877-001
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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.
ADL5541
TABLE OF CONTENTS
Features .............................................................................................. 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Typical Scattering Parameters..................................................... 5
Absolute Maximum Ratings............................................................ 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
REVISION HISTORY
7/07—Revision 0: Initial Version
Typical Perf or m an c e Charac t e r istics ..............................................8
Basic Connections.......................................................................... 10
Soldering Information and Recommended PCB Land Pattern
....................................................................................................... 10
Evaluation Board ............................................................................ 11
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 12
Rev. 0 | Page 2 of 12
ADL5541
SPECIFICATIONS
VPOS = 5 V and TA = 25°C, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
OVERALL FUNCTION
Frequency Range 50 6000 MHz
Gain (S21) 900 MHz 15.2 dB
Input Return Loss (S11) Frequency 500 MHz to 5 GHz −12 dB
Output Return Loss (S22) Frequency 500 MHz to 5 GHz −10 dB
Reverse Isolation (S12) −19 dB
FREQUENCY = 100 MHz
Gain 15.7 dB
Output 1 dB Compression Point 19 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 3.5 dB
FREQUENCY = 500 MHz
Gain 14.7 15.1 15.5 dB
vs. Frequency ±50 MHz ±0.15 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.1 dB
vs. Supply 4.75 V to 5.25 V ±0.01 dB
Output 1 dB Compression Point 19.9 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 3.5 3.7 dB
FREQUENCY = 900 MHz
Gain 14.9 15.2 15.4 dB
vs. Frequency ±50 MHz ±0.03 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.15 dB
vs. Supply 4.75 V to 5.25 V ±0.01 dB
Output 1 dB Compression Point 19.7 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 3.5 3.7 dB
FREQUENCY = 2000 MHz
Gain 13.9 14.7 15.4 dB
vs. Frequency ±50 MHz ±0.03 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.17 dB
vs. Supply 4.75 V to 5.25 V ±0.01 dB
Output 1 dB Compression Point 16.3 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 3.8 4.0 dB
FREQUENCY = 2400 MHz
Gain 13.9 14.5 15.1 dB
vs. Frequency ±50 MHz ±0.03 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.19 dB
vs. Supply 4.75 V to 5.25 V ±0.02 dB
Output 1 dB Compression Point 14.9 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 4.0 4.2 dB
) = 0 dBm per tone 38 dBm
OUT
) = 3 dBm per tone 44 dBm
OUT
) = 0 dBm per tone 40.8 dBm
OUT
) = 0 dBm per tone 39.2 dBm
OUT
) = 0 dBm per tone 38.6 dBm
OUT
Rev. 0 | Page 3 of 12
ADL5541
Parameter Conditions Min Typ Max Unit
FREQUENCY = 3500 MHz
Gain 13.6 14.3 14.9 dB
vs. Frequency ±50 MHz ±0.03 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.19 dB
vs. Supply 4.75 V to 5.25 V ±0.02 dB
Output 1 dB Compression Point 12.1 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 4.2 4.5 dB
FREQUENCY = 5800 MHz
Gain 9.1 11.2 13.5 dB
vs. Frequency ±50 MHz ±0.15 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.9 dB
vs. Supply 4.75 V to 5.25 V ±0.02 dB
Output 1 dB Compression Point 5.8 dBm
Output Third-Order Intercept Δf = 1 MHz, output power (P
Noise Figure 6.0 7.0 dB
POWER INTERFACE Pin VPOS
Supply Voltage (VPOS) 4.5 5 5.5 V
Supply Current 90 100 mA
vs. Temperature −40°C ≤ TA ≤ +85°C ±12 mA
Power Dissipation VPOS = 5 V 0.5 W
) = 0 dBm per tone 30.7 dBm
OUT
) = 0 dBm per tone 21.9 dBm
OUT
Rev. 0 | Page 4 of 12
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