ADL5521(RevC) View Datasheet(PDF) - Analog Devices
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Description
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ADL5521 Datasheet PDF : 24 Pages
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Data Sheet
FEATURES
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 20.8 dB at 900 MHz
OIP3 of 37.0 dBm at 900 MHz
P1dB of 21.8 dBm at 900 MHz
Small footprint LFCSP
Pin-compatible version with 21.5 dB gain available
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-downconversion receivers.
The ADL5521 provides a high level of integration by incorporating
the active bias and dc blocking capacitors, making it very easy
to use while not sacrificing design flexibility.
400 MHz to 4000 MHz
Low Noise Amplifier
ADL5521
FUNCTIONAL BLOCK DIAGRAM
VBIAS 1
RFIN 2
ACTIVE
BIAS
8 VPOS
7 RFOUT
NIC 3
6 NIC
NIC 4
ADL5521
5 NIC
NIC = NO INTERNAL CONNECTION.
DO NOT CONNECT TO THIS PIN.
Figure 1.
The ADL5521 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 low power consumption.
The ADL5521 comes in a compact, thermally enhanced, 3 mm ×
3 mm LFCSP and operates over the temperature range of
−40°C to +85C.
A fully populated evaluation board is also available.
Rev. C
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