400 MHz to 4000 MHz
Low Noise Amplifier
ADL5523 Data Sheet FUNCTIONAL BLOCK DIAGRAM Operation from 400 MHz to 4000 MHz
Noise figure of 0.8 dB at 900 MHz
Requires few external components
Integrated active bias control circuit
Integrated dc blocking capacitors
Adjustable bias for low power applications
Single-supply operation from 3 V to 5 V
Gain of 21.5 dB at 900 MHz
OIP3 of 34.0 dBm at 900 MHz
P1dB of 21.0 dBm at 900 MHz
Small footprint LFCSP
Pin-compatible version with 20.8 dB gain available VBIAS 1 RFIN 2 NC 3 NC 4 ACTIVE
BIAS ADL5523 NC = NO CONNECT 8 VPOS 7 RFOUT 6 NC 5 NC 06829-001 FEATURES Figure 1. GENERAL DESCRIPTION
The ADL5523 is a high performance GaAs pHEMT low noise
amplifier. It provides high gain and low noise figure for singledownconversion IF sampling receiver architectures as well as
direct-downconversion receivers. The ADL5523 is easy to tune, requiring only a few external
components. The device can support operation from 3 V to 5 V,
and the current draw can be adjusted with the external bias
resistor for applications requiring very low power consumption. The ADL5523 provides a high level of integration by incorporating
the active bias and the dc blocking capacitors, making it very
easy to use while not sacrificing design flexibility. The ADL5523 comes in a compact, thermally enhanced, 3 mm × …