400 MHz – 4000 MHz
Low Noise Amplifier
ADL5521
Preliminary Technical Data
FEATURES
Operation from 400 MHz to 4000 MHz
Noise figure of 0.8 dB at 900 MHz
Including external input match
Gain of 20.0 dB at 900 MHz
OIP3 of 37.7 dBm at 900 MHz
P1dB of 22.0 dBm at 900 MHz
Integrated bias control circuit
Single supply operation from 3 V to 5 V
Operating current of 26 mA at 3 V
Small footprint LFCSP package
Pin compatible with 17.5 dB gain ADL5523
FUNCTIONAL BLOCK DIAGRAM
VBIAS 1
ACTIVE
BIAS
RFIN 2
NC 3
NC 4
8 VPOS
7 RFOUT
6 NC
ADL5521
5 NC
Figure 1.
GENERAL DESCRIPTION
The ADL5521 is a high performance GaAs pHEMT low-noise
amplifier. It provides high gain and low noise figure for single downconversion IF sampling receiver architectures as well as direct down
conversion receivers. The ADL5521 also has low power
consumption at 3 V.
The ADL5521 allows optimal noise matching without sacrificing
significant gain matching. S11 of better then 6 dB can typically be
achieved when matching for optimal noise.
The ADL5521 amplifier comes in a compact, thermally enhanced,
3mm x 3mm LFCSP package and operates over the temperature
range of −40°C to +85°C.
The ADL5523 is a companion part that offers a gain of 17.5 dB in a
pin compatible package. A fully populated evaluation board is also
available.
Rev. PrC
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