50-1100 MHz Low Noise Amplifier/
Attenuator with Gain Control
FEAtUREs
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-33 to +5 dB Gain (user adjustable)
Accepts single-ended or differential inputs
Differential output
High Linearity, Low Distortion
37 dB of Gain Control Range
Wideband Operation: to Above 1.1 GHz
4.5 dB Typical Noise Figure at 5 dB Gain
Single +5 V Supply
RoHS Compliant/Lead-Free Package
3 mm x 3 mm x 1 mm QFN Package
CATV Digital Set Top Boxes
Television Receiver Front-Ends
Replacement for Passive Balun with Separate
Gain Stage
ABA3130
PRELIMINARY dAtA shEEt - Rev 1.2
AB
A3
13
0
APPLICAtIONs
s26 Package
12 Pin QFN
3 mm x 3 mm x 1 mm
PROdUCt dEsCRIPtION
The ABA3130 is a low noise amplifier with gain control
that accepts a single-ended or differential RF input in
the 50 MHz to 1.1 GHz frequency range and provides a
balanced RF output with minimal degradation in signal
quality. This highly integrated device amplifies the input
signal using a highly linear, low noise amplification
stage. Alternately, it can be used as a signal attentuator
using the appropriate gain/attenuation control voltage.
The overall linearity is maintained across a wide gain
Bias
Supply
control range, ensuring low distortion effects on the
output signal. Requiring a single +5 V supply, the
ABA3130 design is implemented using ANADIGICS’
own high-reliability GaAs MESFET process. The small,
surface mount QFN packaging makes this device
ideal for use in Cable TV set-top boxes, television
receiver front-ends, and other low noise applications.
The device is characterized for both 75
V
and 50
V
systems.
Bias
Supply
RF Input
RF Output +
RF Output -
RF Input +
RF Input -
RF Output +
RF Output -
GND
Gain/
Attenuation
Control
GND
Gain/
Attenuation
Control
single Ended Input
(No balun required)
differential Input
Figure 1: Functional Block diagrams
04/2010
ANADIGICS [ ANADIGICS, INC ]
