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ADL5243

Analog Devices
Part Number ADL5243
Manufacturer Analog Devices
Description 100 MHz to 4000 MHz RF/IF Digitally Controlled VGA
Published Apr 12, 2012
Detailed Description Data Sheet 100 MHz to 4000 MHz RF/IF Digitally Controlled VGA ADL5243 FEATURES Operating frequency from 100 MHz to 400...
Datasheet PDF File ADL5243 PDF File

ADL5243
ADL5243


Overview
Data Sheet 100 MHz to 4000 MHz RF/IF Digitally Controlled VGA ADL5243 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 1 Gain: 19.
2 dB at 2140 MHz OIP3: 40.
2 dBm at 2140 MHz P1dB: 19.
8 dBm at 2140 MHz Noise figure: 2.
9 dB at 2140 MHz ¼ W Driver Amplifier 2 Gain: 14.
2 dB at 2140 MHz OIP3: 41.
1 dBm at 2140 MHz P1dB: 26.
0 dBm at 2140 MHz Noise figure: 3.
7 dB at 2140 MHz Gain block, DSA, or ¼ W driver amplifier can be first Low quiescent current of 175 mA The companion ADL5240 integrates a gain block with DSA APPLICATIONS Wireless infrastructure Automated test equipment RF/IF gain control 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 (AMP1) is an internally matched gain block amplifier with 20 dB gain, and Amplifier 2 (AMP2) is a broadband ¼ W driver amplifier that requires very few external tuning components.
The DSA is 6-bit with a 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 gain block and DSA are internally matched to 50 Ω at their inputs and outputs, and all three internal devices are separately biased.
The separate bias allows all or part of the ADL5243 to be used, which allows for easy reuse throughout a design.
The pinout of the ADL5243 also enables the gain block, DSA, or ¼ W driver amplifier to be first, giving the VGA maximum flexibility in a signal chain.
The ADL5243 consumes 175 mA and operates off 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 ...



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