adl5243 Analog Devices, Inc., adl5243 Datasheet

adl5243

Manufacturer Part Number

adl5243

Description

Manufacturer

Analog Devices, Inc.

Datasheet

1.ADL5243.pdf (12 pages)

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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

2dB

Figure 1

C to +85

4dB

8dB

AMP2_OUT

AMP2

C. A fully populated

16dB

ADL5243

www.analog.com

DSA_OUT

AMP2_IN

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