FEATURES
APPLICATIONS
Attenuation Range: 0-56 dB, adjustable in
2 dB increments via a serial 3 wire control
Meets DOCSIS distortion requirements at
+60 dBmV output signal level
Low noise figure
Low cost integrated monolithic GaAs
amplifier with step attenuator
+5V Operation
Power saving shutdown capability
DOSIS Compliant IP Telephony Systems.
CATV Interactive Set-Top Box
Home Gateway
ARA3000S23
Telephony Reverse Amplifier
with Step Attenuator
Product Brief - Rev 0
Ordering Information
ARA3000 S23 -40 to +85
0
C
28 PIN SSOP PACKAGE
Description
The ARA3000 is a GaAs IC designed to provide additional reverse path amplification and isolation in IP
Telephony Systems. The precision step attenuator can be digitally controlled to set the output power to the
desired level. The single amplifier stage at the output is capable of meeting both the DOCSIS distortion and
noise requirements from a single +5V supply. In addition, the output amp can be shut down and bypassed
by an on chip switch to save power. The ARA3000 is supplied in a 28-pin SSOP package featuring an
exposed paddle on the bottom of the package. Soldering the exposed paddle to the ground plane of the PC
board ensures the lowest possible thermal resistance for the IC resulting in a long MTF.
Figure 1: Functional Block Diagram
32
c1
1
c2
2
32 / 16 / 8 / 4 / 2 dB
attn in
1
attn out
2
5 BIT ATTENUATOR
16
8
4
2
gnd
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32
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1
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CMOS
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SERIAL to PARALLEL
clk data enable
CO C1
27
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ARA3000S23
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IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or discontinue any product at any time without notice.
The Advanced Product data sheets and product specifications contained in this data sheet are subject to change prior to
a products formal introduction. The information in this data sheet has been carefully checked and is assumed to be reliable.
However, ANADIGICS assumes no responsibility for inaccuracies. ANADIGICS strongly urges customers to verify that the
information they are using is current before placing orders.
WARNING
ANADIGICS products are not intended for use in life support appliances, devices, or systems. Use of an ANADIGICS
product in any such application without written consent is prohibited.
ANADIGICS, Inc.
35 Technology Drive
Warren, New Jersey 07059
Tel: (908) 668-5000
Fax: (908) 668-5132
http://www.anadigics.com
Mktg@anadigics.com
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