adl5243 Analog Devices, Inc., adl5243 Datasheet
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adl5243
Manufacturer Part Number
adl5243
Description
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADL5243.pdf
(12 pages)
Preliminary Datasheet
FEATURES
Operating frequency 100 MHz to 4000 MHz
Digitally controlled variable gain amplifier
Supports both serial and parallel interfaces
6-bit, 0.5 dB digital step attenuator
31.5 dB gain control range with ±0.25 dB step accuracy
Amplifier 1:
Amplifier 2 :
Single supply operation from 4.75 V to 5.25 V
Low quiescent current 195 mA
Thermally efficient 5 x 5 mm 32-Lead LFCSP
GENERAL DESCRIPTION
The ADL5243 is a high performance digitally controlled
variable gain amplifier operating from 100 MHz to 4000 MHz.
The VGA integrates two high performance amplifiers and a
digital step attenuator (DSA). Amplifier 1 is a 20 dB gain
internally matched amplifier, and amplifier 2 is a broadband ¼
W driver amplifier. The DSA is 6-bit with 31.5 dB gain control
range, 0.5 dB steps, and ±0.25 dB step accuracy. The
attenuation of the DSA can be controlled using a serial or
parallel interface.
The ADL5243 consumes just 195 mA and operates off a single
supply ranging from 4.75 V to 5.25 V. The VGA is packaged in
a thermally enhanced 5 x 5 mm 32-lead LFCSP, and is fully
Rev. PrB
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.
Gain: 20.0 dB @ 900 MHz
OIP3: 38.2 dBm @ 900 MHz
P1dB: 20.0 dBm @ 900 MHz
Noise figure: 2.9 dB @ 900 MHz
Gain: 16.9 dB @ 880 MHz
OIP3: 45.0 dBm @ 880 MHz
P1dB: 25.4 dBm @ 880 MHz
Noise figure: 4.1 dB @ 880 MHz
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
specified for operation from -40
evaluation board is available.
AMP1_OUT
RF/IF Digitally Controlled VGA
DSA_IN
SEL
FUNCTIONAL BLOCK DIAGRAM
D0/CLK D1/DATA D2/LE
0.5dB
AMP1_IN
100 MHz – 4000 MHz
AMP1
1dB
SERIAL/PARALLEL INTERFACE
©2010 Analog Devices, Inc. All rights reserved.
2dB
Figure 1
.
o
C to +85
4dB
D3
8dB
D4
AMP2_OUT
0
AMP2
C. A fully populated
16dB
D5
ADL5243
www.analog.com
D6
DSA_OUT
AMP2_IN