ACA2601
Fiber-to-the-Home RF Amplifier
PRELIMINARY DATA SHEET - Rev 1.4
FEATURES
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50 - 870 MHz Operating Frequency
High Linearity: 65 dBc CTB/CSO (79 Chan.)
Low Equivalent Input Noise: 4.5 pA/rtHz
20 dB Gain Adjust
400
Ω
Differential Input Impedance: No
Transformer Required for Interface to
Photodiode
Single +5 V Supply
5 mm x 5 mm x 1 mm Surface Mount Package
RoHS Compliant Package
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APPLICATIONS
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FTTH RF Amplifier Used in Conjunction With
Triplexer in Fiber-Coax Line Terminals
S29 Package
28 Pin QFN
5 mm x 5 mm x 1 mm
PRODUCT DESCRIPTION
The ANADIGICS ACA2601 amplifier for Fiber-to-the-
Home (FTTH) applications is intended to be used
in conjunction with the triplexer in fiber-coax line
terminals. The device is driven by, and amplifies the
output of, the video downstream path photodiode.
The high-impedance input of the ACA2601
eliminates the need for a costly transformer usually
needed to interface to the photodiode, and a low
equivalent input noise level offers excellent
sensitivity. The device provides sufficient linearity to
Supply
maintain low CTB and CSO levels in full-bandwidth
(132 channel) systems, even across a wide gain
adjustment range.
The ACA2601 is manufactured using ANADIGICS’s
proven MESFET technology that offers state-of-the-
art reliability, temperature stability and ruggedness.
The device operates from a single +5V supply and
is offered in a 5 mm x 5 mm x 1 mm surface mount
package.
Attenuator
Control
Matching
Circuit
LNA
Voltage
Controlled
Attenuator
Output
Amplifier
1:1
Transmission
Line Balun
RF Output
ACA2601
Figure 1: Application Block Diagram
01/2006
ANADIGICS [ ANADIGICS, INC ]
