ADL5240 반도체 회로 부품 판매점
100 MHz to 4000 MHz RF/IF Digitally Controlled VGA
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 Analog Devices |
100 MHz to 4000 MHz
RF/IF Digitally Controlled VGA
ADL5240
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
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 Ω 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.
FUNCTIONAL BLOCK DIAGRAMwww.DataSheet.co.kr
32 31 30 29 28 27 26 25
VDD 1
NC 2
SERIAL/PARALLEL INTERFACE
NC 3
DSAIN 4
NC 5
0.5dB
1dB
2dB
4dB
8dB 16dB
NC 6
NC 7
ADL5240
AMP
NC 8
9 10 11 12 13 14 15 16
24 VDD
23 NC
22 NC
21 DSAOUT
20 NC
19 NC
18 NC
17 NC
Figure 1.
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2011 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
ADL5240
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 8
ESD Caution.................................................................................. 8
Pin Configuration and Function Descriptions............................. 9
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
www.DataSheet.co.kr
Rev. 0 | Page 2 of 24
Datasheet pdf - http://www.DataSheet4U.net/
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관련 데이터시트
ADL5240
100 MHz to 4000 MHz RF/IF Digitally Controlled VGA - Analog Devices
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100 MHz to 4000 MHz RF/IF Digitally Controlled VGA - Analog Devices
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3GHz Variable Gain LNA - Analog Devices