ADA4302-4 Splitter Datasheet

ADA4302-4 Datasheet PDF, Equivalent


Part Number

ADA4302-4

Description

Active RF Splitter

Manufacture

Analog Devices

Total Page 12 Pages
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Download ADA4302-4 Datasheet PDF


ADA4302-4
FEATURES
Single 5 V supply
54 MHz to 865 MHz CATV operating range
4.6 dB of gain per output channel
4.4 dB noise figure
25 dB isolation between output channels
−16 dB input return loss
CSO of −73 dBc (135 channels, 15 dBmV per tone)
CTB of −66 dBc (135 channels, 15 dBmV per tone)
1.3 GHz, −3 dB bandwidth
APPLICATIONS
Cable set-top boxes
Home gateways
CATV distribution systems
Cable splitter modules
GENERAL DESCRIPTION
The ADA4302-4 is used as an active element in applications
where a lossless signal split is required. Typical applications
include multituner cable set-top boxes, cable splitter modules,
multituner televisions, and home gateways where traditional
solutions have consisted of discrete passive splitters followed by
separate fixed gain amplifiers. The ADA4302-4 is a low cost
alternative solution that simplifies designs and improves system
performance by integrating a signal splitter element and gain
element into a single IC solution.
The ADA4302-4 features four differential outputs. The
differential architecture allows systems designed with the
ADA4302-4 to maintain excellent linearity throughout the
CATV band. The ADA4302-4 can also be configured for
applications that require fewer than four outputs. Outputs
can be configured independently from one another.
Active RF Splitter
ADA4302-4
FUNCTIONAL BLOCK DIAGRAM
VCC
+
GND VCC
GND
J1
ILN
VIP
SPLITTER
VIN
ILP
VCC
GND
Figure 1.
VON4
VOP4
VON3
VOP3
VON2
VOP2
VON1
VOP1
–55
–60
–65
TA = +85°C
–70
TA = +25°C
–75
TA = –40°C
–80
–85
50
100
FREQUENCY (MHz)
Figure 2. Composite Second-Order (CSO) vs. Frequency
1000
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.

ADA4302-4
ADA4302-4
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
REVISION HISTORY
9/05—Rev. SpA to Rev. B
Updated Format..................................................................Universal
Changes to Circuit Description Section ........................................ 8
5/05—Rev. Sp0 to Rev. SpA
Changes to Format .............................................................Universal
Changes to Features.......................................................................... 1
Changes to Figure 1 and Figure 2................................................... 1
Changes to Table 1............................................................................ 3
Changes to Figure 4 and Figure 5................................................... 6
Changes to Applications Section .................................................... 8
10/04—Revision Sp0: Initial Version
Typical Performance Characteristics ..............................................6
Applications........................................................................................8
Circuit Description .......................................................................8
Evaluation Boards .........................................................................8
RF Layout Considerations............................................................8
Power Supply..................................................................................8
Outline Dimensions ....................................................................... 11
Ordering Guide .......................................................................... 11
Rev. B | Page 2 of 12


Features CSOOB(dBc)SOLETE FEATURES Single 5 V su pply 54 MHz to 865 MHz CATV operating r ange 4.6 dB of gain per output channel 4.4 dB noise figure 25 dB isolation bet ween output channels −16 dB input ret urn loss CSO of −73 dBc (135 channels , 15 dBmV per tone) CTB of −66 dBc (1 35 channels, 15 dBmV per tone) 1.3 GHz, −3 dB bandwidth APPLICATIONS Cable s et-top boxes Home gateways CATV distrib ution systems Cable splitter modules GE NERAL DESCRIPTION The ADA4302-4 is used as an active element in applications w here a lossless signal split is require d. Typical applications include multitu ner cable set-top boxes, cable splitter modules, multituner televisions, and h ome gateways where traditional solution s have consisted of discrete passive sp litters followed by separate fixed gain amplifiers. The ADA4302-4 is a low cos t alternative solution that simplifies designs and improves system performance by integrating a signal splitter eleme nt and gain element into a single IC solution. The ADA4302-4 fe.
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