ANALOG DEVICES ADL5240 Service Manual

100 MHz to 4000 MHz

FEATURES

Operating frequency from 100 MHz to 4000 MHz Digitally controlled VGA with serial and parallel interfaces 6-bit, 0.5 dB digital step attenuator

31.5 dB gain control range with ±0.25 dB step accuracy Gain block amplifier specifications

Gain: 19.7 dB at 2.14 GHz OIP3: 41.0 dBm at 2.14 GHz P1dB: 19.5 dBm at 2.14 GHz

Noise figure: 2.9 dB at 2.14 GHz Gain block or digital step attenuator can be first Single supply operation from 4.75 V to 5.25 V Low quiescent current of 93 mA Thermally efficient, 5 mm × 5 mm, 32-lead LFCSP The companion ADL5243 integrates a ¼ W driver amplifier to

the output of the gain block and DSA

APPLICATIONS

Wireless infrastructure Automated test equipment RF/IF gain control

FUNCTIONAL BLOCK DIAGRAM

RF/IF Digitally Controlled VGA

ADL5240

GENERAL DESCRIPTION

The ADL5240 is a high performance, digitally controlled variable gain amplifier (VGA) operating from 100 MHz to 4000 MHz. The VGA integrates a high performance, 20 dB gain, internally matched amplifier (AMP) with a 6-bit digital step attenuator (DSA) that has a gain control range of 31.5 dB in 0.5 dB steps with ±0.25 dB step accuracy. The attenuation of the DSA can be controlled using a serial or parallel interface.

Both the gain block and DSA are internally matched to 50  at their inputs and outputs and are separately biased. The separate bias allows all or part of the ADL5240 to be used, which facilitates easy reuse throughout a design. The pinout of the ADL5240 also enables either the gain block or DSA to be first, giving the VGA maximum flexibility in a signal chain.

The ADL5240 consumes just 93 mA and operates from a single supply ranging from 4.75 V to 5.25 V. The VGA is packaged in a thermally efficient, 5 mm × 5 mm, 32-lead LFCSP and is fully specified for operation from −40°C to +85°C. A fully populated evaluation board is available.

SEL31D0/CLK30D1/DATA29D2/LE28D327D426D525D6

32

1

VDD

2

NC

3

NC

4

DSAIN

NC

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.

0.5dB 1dB 2dB 4dB 8dB 16dB

5

6

ADL5240

7

8

9NC10

SERIAL/P ARALLEL INTERFACE

11NC12NC13NC14NC15

AMPOUT/VCC

AMP

Figure 1.

24

VDD

23

NC

22

NC

21

DSAOUT

20

NC

19

NC

18

NC

17

NC

16

NC

AMPIN

09430-001

ADL5240

REVISION HISTORY

7/11—Revision 0: Initial Version

Typical Performance Characteristics........................................... 10

Applications Information.............................................................. 15

Basic Layout Connections......................................................... 15

SPI Timing................................................................................... 17

Loop Performance...................................................................... 19

Thermal Considerations............................................................ 20

Evaluation Board............................................................................ 21

Outline Dimensions....................................................................... 24

Ordering Guide .......................................................................... 24

Rev. 0 | Page 2 of 24

ADL5240

SPECIFICATIONS

VDD = 5 V, VCC = 5 V, TA = 25oC

Table 1.

Parameter Test Conditions/Comments Min Typ Max Unit

OVERALL FUNCTION

Frequency Range 100 4000 MHz

AMPLIFIER FREQUENCY = 150 MHz Using the AMPIN and AMPOUT pins

Gain 17.6 dB

vs. Frequency ±50 MHz ±1.0 dB vs. Temperature −40°C ≤ TA ≤ +85°C ±0.04 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Input Return Loss S11 −10.4 dB Output Return Loss S22 −7.7 dB Output 1 dB Compression Point 18.3 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.8 dB

AMPLIFIER FREQUENCY = 450 MHz Using the AMPIN and AMPOUT pins

Gain 20.3 dB

vs. Frequency ±50 MHz ±0.11 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.36 dB

vs. Supply 4.75 V to 5.25 V ±0.01 dB Input Return Loss S11 −18.3 dB Output Return Loss S22 −15.7 dB Output 1 dB Compression Point 20.2 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.9 dB

AMPLIFIER FREQUENCY = 748 MHz Using the AMPIN and AMPOUT pins

Gain 20.6 dB

vs. Frequency ±50 MHz ±0.01 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.31 dB

vs. Supply 4.75 V to 5.25 V ±0.01 dB Input Return Loss S11 −25.7 dB Output Return Loss S22 −23.7 dB Output 1 dB Compression Point 20.2 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.7 dB

AMPLIFIER FREQUENCY = 943 MHz Using the AMPIN and AMPOUT pins

Gain 19.0 20.5 22.0 dB

vs. Frequency ±18 MHz ±0.01 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.27 dB

vs. Supply 4.75 V to 5.25 V ±0.01 dB Input Return Loss S11 −30.3 dB Output Return Loss S22 −24.8 dB Output 1 dB Compression Point 18.5 20.1 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.7 dB

= 4 dBm/tone 30.0 dBm

OUT

= 4 dBm/tone 39.0 dBm

OUT

= 4 dBm/tone 40.0 dBm

OUT

= 4 dBm/tone 40.0 dBm

OUT

Rev. 0 | Page 3 of 24

ADL5240

Parameter Test Conditions/Comments Min Typ Max Unit

AMPLIFIER FREQUENCY = 1960 MHz Using the AMPIN and AMPOUT pins

Gain 19.8 dB

vs. Frequency ±30 MHz ±0.03 dB vs. Temperature −40°C ≤ TA ≤ +85°C ±0.26 dB

vs. Supply 4.75 V to 5.25 V ±0.03 dB Input Return Loss S11 −11.9 dB Output Return Loss S22 −12.6 dB Output 1 dB Compression Point 19.8 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.9 dB

AMPLIFIER FREQUENCY = 2140 MHz Using the AMPIN and AMPOUT pins

Gain 18.0 19.7 22.0 dB

vs. Frequency ±30 MHz ±0.02 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.25 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Input Return Loss S11 −11.0 dB Output Return Loss S22 −12.0 dB Output 1 dB Compression Point 17.5 19.5 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.9 dB

AMPLIFIER FREQUENCY = 2630 MHz Using the AMPIN and AMPOUT pins

Gain 18.0 19.6 22.0 dB

vs. Frequency ±60 MHz ±0.01 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.22 dB

vs. Supply 4.75 V to 5.25 V ±0.04 dB Input Return Loss S11 −11.0 dB Output Return Loss S22 −13.3 dB Output 1 dB Compression Point 18.0 19.9 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.9 dB

AMPLIFIER FREQUENCY = 3600 MHz Using the AMPIN and AMPOUT pins

Gain 19.6 dB

vs. Frequency ±100 MHz ±0.03 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.05 dB

vs. Supply 4.75 V to 5.25 V ±0.10 dB Input Return Loss S11 −15.1 dB Output Return Loss S22 −12.2 dB Output 1 dB Compression Point 18.8 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 3.1 dB

DSA FREQUENCY = 150 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −1.5 dB

vs. Frequency ±50 MHz ±0.12 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.09 dB Attenuation Range 28.8 dB Attenuation Step Error All attenuation states ±0.18 dB Attenuation Absolute Error All attenuation states ±1.35 dB Input Return Loss Minimum attenuation −13.3 dB Output Return Loss Minimum attenuation −13.4 dB Input Third-Order Intercept ∆f = 1 MHz, P

= 4 dBm/tone 40.0 dBm

OUT

= 4 dBm/tone 41.0 dBm

OUT

= 4 dBm/tone 41.0 dBm

OUT

= 4 dBm/tone 37.0 dBm

OUT

= 4 dBm/tone, minimum attenuation 45.5 dBm

OUT

Rev. 0 | Page 4 of 24

ADL5240

Parameter Test Conditions/Comments Min Typ Max Unit

DSA FREQUENCY = 450 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −1.5 dB

vs. Frequency ±50 MHz ±0.02 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.10 dB Attenuation Range 30.7 dB Attenuation Step Error All attenuation states ±0.14 dB Attenuation Absolute Error All attenuation states ±0.42 dB Input Return Loss Minimum attenuation −17.6 dB Output Return Loss Minimum attenuation −17.6 dB Input Third-Order Intercept ∆f = 1 MHz, P

DSA FREQUENCY = 748 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −1.6 dB

vs. Frequency ±50 MHz ±0.02 dB

vs. Temperature −40°C ≤ TA ≤ +85°C Attenuation Range 30.9 dB Attenuation Step Error All attenuation states ±0.15 dB Attenuation Absolute Error All attenuation states ±0.32 dB Input Return Loss Minimum attenuation −17.4 dB Output Return Loss Minimum attenuation −17.4 dB Input Third-Order Intercept ∆f = 1 MHz, P

DSA FREQUENCY = 943 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −1.6 dB

vs. Frequency ±18 MHz ±0.01 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.12 dB Attenuation Range 30.9 dB Attenuation Step Error All attenuation states ±0.13 dB Attenuation Absolute Error All attenuation states ±0.30 dB Input Return Loss Minimum attenuation −16.6 dB Output Return Loss Minimum attenuation −16.5 dB Input 1 dB Compression Point Minimum attenuation 30.5 dBm Input Third-Order Intercept ∆f = 1 MHz, P

DSA FREQUENCY = 1960 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −2.4 dB

vs. Frequency ±30 MHz ±0.02 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.16 dB Attenuation Range 31.0 dB Attenuation Step Error All attenuation states ±0.15 dB Attenuation Absolute Error All attenuation states ±0.29 dB Input Return Loss Minimum attenuation −12.0 dB Output Return Loss Minimum attenuation −11.5 dB Input 1 dB Compression Point Minimum attenuation 31.5 dBm Input Third-Order Intercept ∆f = 1 MHz, P

DSA FREQUENCY = 2140 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −2.5 dB

vs. Frequency ±30 MHz ±0.02 dB

vs. Temperature −40°C ≤ TA ≤ +85°C Attenuation Range 31.0 dB Attenuation Step Error All attenuation states ±0.12 dB Attenuation Absolute Error All attenuation states ±0.26 dB Input Return Loss Minimum attenuation −11.9 dB Output Return Loss Minimum attenuation −11.2 dB Input 1 dB Compression Point Minimum attenuation 31.5 dBm Input Third-Order Intercept ∆f = 1 MHz, P

= 4 dBm/tone, minimum attenuation 41.0 dBm

OUT

±0.11

= 4 dBm/tone, minimum attenuation 40 dBm

OUT

= 4 dBm/tone, minimum attenuation 48.5 dBm

OUT

= 4 dBm/tone, minimum attenuation 45.0 dBm

OUT

±0.17

= 4 dBm/tone, minimum attenuation 44.5 dBm

OUT

Rev. 0 | Page 5 of 24

dB

ADL5240

Parameter Test Conditions/Comments Min Typ Max Unit

DSA FREQUENCY = 2630 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −2.6 dB

vs. Frequency ±60 MHz ±0.04 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.19 dB Attenuation Range 31.2 dB Attenuation Step Error All attenuation states ±0.16 dB Attenuation Absolute Error All attenuation states ±0.19 dB Input Return Loss Minimum attenuation −13.1 dB Output Return Loss Minimum attenuation −12.0 dB Input 1 dB Compression Point Minimum attenuation 31.5 dBm Input Third-Order Intercept ∆f = 1 MHz, P

DSA FREQUENCY = 3600 MHz Using the DSAIN and DSAOUT pins

Insertion Loss Minimum attenuation −2.8 dB

vs. Frequency ±100 MHz ±0.03 dB

vs. Temperature −40°C ≤ TA ≤ +85°C ±0.21 dB Attenuation Range 32.1 dB Attenuation Step Error All attenuation states ±0.37 dB Attenuation Absolute Error All attenuation states ±0.31 dB Input Return Loss Minimum attenuation −20.2 dB Output Return Loss Minimum attenuation −18.2 dB Input 1 dB Compression Point Minimum attenuation 31.0 dBm Input Third-Order Intercept ∆f = 1 MHz, P

DIGITAL STEP ATTENUATOR GAIN SETTLING

Minimum Attenuation to Maximum Attenuation 36 ns Maximum Attenuation to Minimum Attenuation 36 ns

AMP-DSA LOOP FREQUENCY = 943 MHz

Using the AMPIN and DSAOUT pins, DSA at minimum attenuation

Gain 18.9 dB

vs. Frequency ±18 MHz ±0.01 dB Gain Range Between maximum and minimum attenuation states 30.8 dB Input Return Loss S11 −20.5 dB Output Return Loss S22 −19.7 dB Output 1 dB Compression Point 18.6 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 2.7 dB

AMP-DSA LOOP FREQUENCY = 2140 MHz

Using the AMPIN and DSAOUT pins, DSA at minimum attenuation

Gain 18.2 dB

vs. Frequency ±30 MHz ±0.01 dB Gain Range Between maximum and minimum attenuation states 31.3 dB Input Return Loss S11 −14.9 dB Output Return Loss S22 −16.4 dB Output 1 dB Compression Point 17.9 dBm Output Third-Order Intercept ∆f = 1 MHz, P Noise Figure 3.0 dB

= 4 dBm/tone, minimum attenuation 43.0 dBm

OUT

= 4 dBm/tone, minimum attenuation 43.0 dBm

OUT

= 1 dBm/tone 36.0 dBm

OUT

= 1 dBm/tone 37.5 dBm

OUT

Rev. 0 | Page 6 of 24

ADL5240

Parameter Test Conditions/Comments Min Typ Max Unit

AMP-DSA LOOP FREQUENCY = 2630 MHz

Using the AMPIN and DSAOUT pins, DSA at minimum attenuation

Gain 17.7 dB

vs. Frequency ±60 MHz ±0.11 dB Gain Range 31.5 dB Input Return Loss S11 −15.2 dB Output Return Loss S22 −9.6 dB Output 1 dB Compression Point 16.9 dBm Output Third-Order Intercept ∆f = 1 MHz, P

= 1 dBm/tone 33.7 dBm

OUT

Noise Figure 3.0 dB

DSA-AMP LOOP FREQUENCY = 943 MHz

Using the DSAIN and AMPOUT pins, DSA at minimum attenuation

Gain 18.9 dB

vs. Frequency ±18 MHz ±0.01 dB Gain Range Between maximum and minimum attenuation states 30.8 dB Input Return Loss S11 −17.2 dB Output Return Loss S22 −23.7 dB Output 1 dB Compression Point 20.2 dBm Output Third-Order Intercept ∆f = 1 MHz, P

= 4 dBm/tone 40.0 dBm

OUT

Noise Figure 4.4 dB

DSA-AMP LOOP Frequency = 2140 MHz

Using the DSAIN and AMPOUT pins, DSA at minimum attenuation

Gain 18.0 dB

vs. Frequency ±30 MHz ±0.01 dB Gain Range Between maximum and minimum attenuation states 31.1 dB Input Return Loss S11 −13.7 dB Output Return Loss S22 −10.0 dB Output 1 dB Compression Point 19.7 dBm Output Third-Order Intercept ∆f = 1 MHz, P

= 4 dBm/tone 37.5 dBm

OUT

Noise Figure 4.9 dB

DSA-AMP LOOP Frequency = 2630 MHz

Using the DSAIN and AMPOUT pins, DSA at minimum attenuation

Gain 18.2 dB

vs. Frequency ±60 MHz ±0.01 dB Gain Range Between maximum and minimum attenuation states 31.7 dB Input Return Loss S11 −15.7 dB Output Return Loss S22 −16.9 dB Output 1 dB Compression Point 19.8 dBm Output Third-Order Intercept ∆f = 1 MHz, P

= 4 dBm/tone 40.8 dBm

OUT

Noise Figure 5.2 dB

POWER SUPPLIES Using the VDD and VCC pins

Voltage 4.75 5.0 5.25 V Supply Current

Amplifier 93 120 mA

Digital Step Attenuator 0.5 mA

Rev. 0 | Page 7 of 24

ADL5240

ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter Rating

Supply Voltage (VDD, VCC) 6.5 V Input Power

AMPIN 16 dBm

DSAIN 30 dBm Internal Power Dissipation 0.5 W θJA (Exposed Pad Soldered Down) 36.8°C/W θJC (Exposed Pad is the Contact) 6.9°C/W Maximum Junction Temperature 150°C Lead Temperature (Soldering, 60 sec) 240°C Operating Temperature Range −40°C to +85°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

ESD CAUTION

maximum rating conditions for extended periods may affect device reliability.

Rev. 0 | Page 8 of 24

ANALOG DEVICES ADL5240 Service Manual

FEATURES

APPLICATIONS

FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

ESD CAUTION