Data Sheet 100 MHz to 4000 MHz
RF/IF Digitally Controlled VGA
ADL5243 FEATURES GENERAL DESCRIPTION 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 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 …