ANALOG DEVICES ADL5542 Service Manual

50 MHz to 6 GHz

FEATURES

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)

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.

RF/IF Gain Block

ADL5542

FUNCTIONAL BLOCK DIAGRAM

RFIN

GND

CB

MATCH

2

3

4

BIAS CONTROL

ADL5542

INPUT

1

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.

Figure 1.

OUTPUT

MATCH

8

7

6

5

RFOUT

GND

VPOS

06879-001

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.

ADL5542

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

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

Typical Performance Characteristics ..............................................8

Basic Connections .......................................................................... 10

Soldering Information and Recommended

PCB Land Pattern ....................................................................... 10

Evaluation Board ............................................................................ 11

Outline Dimensions ....................................................................... 12

Ordering Guide .......................................................................... 12

7/07—Revision 0: Initial Version

Rev. A | Page 2 of 12

ADL5542

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 19.7 dB

Input Return Loss (S11) Frequency 500 MHz to 5 GHz −15 dB

Output Return Loss (S22) Frequency 500 MHz to 5 GHz −10 dB

Reverse Isolation (S12) −22 dB

FREQUENCY = 100 MHz

Gain 20.2 dB

Output 1 dB Compression Point 19.6 dBm

Output Third-Order Intercept Δf = 1 MHz, output power (P

Noise Figure 2.7 dB

FREQUENCY = 500 MHz

Gain 18.4 19.5 20.8 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 ±0.02 dB Output 1 dB Compression Point 20.6 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 2.8 3.2 dB

FREQUENCY = 900 MHz

Gain 19.2 19.7 20.8 dB

vs. Frequency ±50 MHz ±0.03 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.14 dB

vs. Supply 4.75 V to 5.25 V ±0.02 dB Output 1 dB Compression Point 20.6 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 3.0 3.3 dB

FREQUENCY = 2000 MHz

Gain 18 18.7 19.4 dB

vs. Frequency ±50 MHz ±0.05 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.23 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Output 1 dB Compression Point 18 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 3.2 3.6 dB

FREQUENCY = 2400 MHz

Gain 17.7 18.3 18.9 dB

vs. Frequency ±50 MHz ±0.05 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.24 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Output 1 dB Compression Point 16.8 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 3.5 3.8 dB

) = 0 dBm per tone 38 dBm

OUT

) = 3 dBm per tone 46 dBm

OUT

) = 0 dBm per tone 40 dBm

OUT

) = 0 dBm per tone 39 dBm

OUT

) = 0 dBm per tone 38 dBm

OUT

Rev. A | Page 3 of 12

ADL5542

Parameter Conditions Min Typ Max Unit

FREQUENCY = 3500 MHz

Gain 15.9 17.5 18.8 dB

vs. Frequency ±50 MHz ±0.04 dB vs. Temperature −40°C ≤ TA ≤ +85°C ±0.31 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Output 1 dB Compression Point 13.7 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 3.7 4.3 dB

FREQUENCY = 5800 MHz

Gain 11.2 12.7 14.4 dB

vs. Frequency ±50 MHz ±0.03 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±1.2 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Output 1 dB Compression Point 6.8 dBm Output Third-Order Intercept Δf = 1 MHz, output power (P Noise Figure 5.7 6.3 dB

POWER INTERFACE Pin VPOS

Supply Voltage (VPOS) 4.5 5 5.5 V Supply Current 93 115 mA

vs. Temperature −40°C ≤ TA ≤ +85°C ±15 mA Power Dissipation VPOS = 5 V 0.5 W

) = 0 dBm per tone 33 dBm

OUT

) = 0 dBm per tone 24.2 dBm

OUT

Rev. A | Page 4 of 12