ANALOG DEVICES ADL5321 Service Manual

2.3 GHz to 4.0 GHz

FEATURES

Operation: 2.3 GHz to 4.0 GHz
Gain of 14 dB at 2.6 GHz
OIP3 of 41 dBm at 2.6 GHz
P1dB of 25.7 dBm at 2.6 GHz
Noise figure: 4.0 dB at 2.6 GHz
Power supply: 5 V
Power supply current: 90 mA typical
Internal active biasing
Thermally efficient SOT-89 package
ESD rating of ±2 kV (Class 3A)

GENERAL DESCRIPTION

The ADL5321 is a broadband, linear driver RF amplifier that
operates at frequencies from 2.3 GHz to 4.0 GHz. The device
can be used in a wide variety of wired and wireless applications,
including ISM, WLL, PCS, GSM, CDMA, and W-CDMA.

The ADL5321 operates with a 5 V supply voltage and a supply
current of 90 mA.

RF Driver Amplifier

ADL5321

FUNCTIONAL BLOCK DIAGRAM

GND

(2)

ADL5321

BIAS

1 2

RFIN GND RFOUT

Figure 1.

The ADL5321 is fabricated on the 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 −40°C
to +105°C, and a fully populated evaluation board is available.

The ADL5320 is a companion part to the ADL5321 that operates at
similar performance from 400 MHz to 2700 MHz.

3

07307-001

Rev. B

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ADL5321

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

REVISION HISTORY

6/10—Rev. A to Rev. B

Changes to General Description Section ...................................... 1

Changes to Operating Temperature Range, Table 3 .................... 5

Added High Temperature Operation Section, Figure 27, Figure 28,

and Figure 29 ................................................................................... 13

Changes to Ordering Guide .......................................................... 16

2/09—Rev. 0 to Rev. A

Updated Outline Dimensions ....................................................... 15

Changes to Ordering Guide .......................................................... 15

5/08—Revision 0: Initial Version

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

Soldering Information and Recommended PCB Land Pattern

....................................................................................................... 10

Matching Procedure ................................................................... 11

WiMAX Operation .................................................................... 12

High Temperature Operation ....................................................... 13

Evaluation Board ............................................................................ 14

Outline Dimensions ....................................................................... 16

Ordering Guide .......................................................................... 16

Rev. B | Page 2 of 16

ADL5321

SPECIFICATIONS

VCC = 5 V and TA = 25°C, unless otherwise noted.

Table 1.

Parameter Conditions Min Typ Max Unit

OVERALL FUNCTION

Frequency Range 2.3 4.0 GHz

FREQUENCY = 2.6 GHz

Gain1 13.2 14.0 14.6 dB

vs. Frequency ±100 MHz ±0.4 dB
vs. Temperature −40°C ≤ TA ≤ +85°C ±0.7 dB

vs. Supply 4.75 V to 5.25 V ±0.07 dB
Output 1 dB Compression Point, P1dB 25.7 dBm
Output Third-Order Intercept, OIP3 Δf = 1 MHz, P
Noise Figure 4.0 dB

FREQUENCY = 3.5 GHz

Gain1 11.1 12.0 12.9 dB

vs. Frequency ±100 MHz ±0.05 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.8 dB

vs. Supply 4.75 V to 5.25 V ±0.07 dB
Output 1 dB Compression Point, P1dB 25.7 dBm
Output Third-Order Intercept, OIP3 Δf = 1 MHz, P
Noise Figure 4.9 dB

POWER INTERFACE Pin RFOUT

Supply Voltage 4.5 5 5.5 V
Supply Current 90 100 mA

vs. Temperature −40°C ≤ TA ≤ +85°C ±6.0 mA
Power Dissipation VCC = 5 V 520 mW

1

Guaranteed maximum and minimum specified limits on this parameter are based on six sigma calculations.

= 5 dBm per tone 41 dBm

OUT

= 5 dBm per tone 38 dBm

OUT

Rev. B | Page 3 of 16

ADL5321

TYPICAL SCATTERING PARAMETERS

VCC = 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.

Frequency
(MHz)

2400 −4.47 −176.78 12.04 +74.69 −26.63 +16.98 −7.98 −111.37
2450 −4.57 −179.08 12.04 +71.96 −26.53 +15.09 −8.12 −113.06
2500 −4.62 +178.53 12.03 +69.02 −26.44 +12.94 −8.22 −115.61
2550 −4.70 +176.46 12.01 +66.20 −26.38 +10.91 −8.33 −118.13
2600 −4.78 +174.30 11.99 +63.23 −26.30 +8.56 −8.37 −121.11
2650 −4.88 +172.49 11.97 +60.32 −26.25 +6.38 −8.36 −124.14
2700 −4.97 +170.84 11.93 +57.28 −26.20 +3.90 −8.25 −127.48
2750 −5.07 +169.41 11.93 +54.11 −26.15 +1.38 −8.05 −130.84
2800 −5.23 +168.34 11.86 +51.18 −26.14 −1.15 −7.88 −133.91
2850 −5.44 +167.48 11.80 +47.81 −26.16 −3.88 −7.59 −137.02
2900 −5.72 +167.06 11.74 +44.61 −26.18 −6.79 −7.25 −139.88
2950 −6.00 +167.08 11.69 +41.14 −26.18 −9.78 −6.83 −142.37
3000 −6.40 +167.66 11.62 +37.73 −26.22 −13.00 −6.37 −144.60
3050 −6.84 +169.10 11.51 +34.13 −26.31 −16.32 −5.90 −146.58
3100 −7.32 +171.08 11.44 +30.41 −26.37 −19.95 −5.38 −148.25
3150 −7.93 +174.69 11.28 +26.53 −26.51 −23.60 −4.92 −149.46
3200 −8.52 +179.46 11.14 +22.45 −26.66 −27.66 −4.40 −150.81
3250 −9.06 −173.89 10.95 +18.23 −26.86 −31.92 −3.91 −151.83
3300 −9.46 −165.62 10.71 +13.94 −27.11 −36.45 −3.45 −152.90
3350 −9.48 −156.10 10.39 +9.45 −27.45 −41.18 −3.05 −153.80
3400 −9.18 −146.31 10.03 +5.06 −27.85 −45.96 −2.67 −154.63
3450 −8.56 −138.10 9.65 +0.71 −28.28 −50.83 −2.33 −155.41
3500 −7.74 −131.09 9.20 −3.47 −28.76 −55.67 −2.04 −156.03
3550 −6.90 −126.03 8.70 −7.62 −29.33 −60.52 −1.80 −156.44
3600 −6.08 −122.27 8.14 −11.37 −29.96 −65.27 −1.60 −156.77
3650 −5.35 −119.50 7.55 −14.86 −30.62 −69.78 −1.47 −156.90
3700 −4.73 −117.43 6.93 −18.10 −31.32 −74.35 −1.38 −156.85
3750 −4.15 −115.94 6.34 −21.07 −31.98 −78.77 −1.29 −156.62
3790 −3.78 −114.89 5.81 −23.21 −32.56 −82.30 −1.27 −156.36
3800 −3.68 −114.66 5.69 −23.67 −32.68 −83.17 −1.24 −156.19
3850 −3.29 −113.41 5.09 −25.99 −33.35 −87.33 −1.20 −155.59
3900 −2.97 −112.48 4.45 −27.94 −34.03 −91.70 −1.22 −154.96
3950 −2.67 −111.68 3.86 −29.95 −34.65 −96.22 −1.23 −154.01
4000 −2.41 −110.79 3.30 −31.52 −35.23 −100.84 −1.23 −153.20

Magnitude (dB) Angle (°) Magnitude (dB) Angle (°) Magnitude (dB) Angle (°) Magnitude (dB) Angle (°)

S11 S21 S12 S22

Rev. B | Page 4 of 16

ADL5321

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter Rating

Supply Voltage, VCC 6.5 V
Input Power, 50 Ω Impedance 20 dBm
Internal Power Dissipation, Paddle Soldered 683 mW
θJC, Junction to Paddle 28.5°C/W
Maximum Junction Temperature 150°C
Operating Temperature Range −40°C to +105°C
Storage Temperature Range −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.

ESD CAUTION

Rev. B | Page 5 of 16