ADA4302-4
器件资料摘要：
Active RF Splitter
ADA4302-4
Rev. Sp0
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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 −89 dBc (135 channels, 15 dBmV per tone)
CTB of −81 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
may be configured independently from one another.
For more information about the ADA4302-4, contact Analog
Devices, Inc. via email at high_current_drivers.com@analog.com.
FUNCTIONAL BLOCK DIAGRAM
SPLITTER
VIN
ILP
VIP
ILN
GND
GND
J1
GND
VCC
VCC
+
VCC
VOP4
VON3
VOP3
VON2
VOP2
VON1
VOP1
05017-016
VON4
Figure 1.
FREQUENCY (MHz)
CS
O (dBc
)
–60
–70
–80
–100
–90
–110
50 100 1000
05017-008
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
Figure 2. Composite Second-Order vs. Frequency
ADA4302-4
Rev. Sp0
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. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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 −89 dBc (135 channels, 15 dBmV per tone)
CTB of −81 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
may be configured independently from one another.
For more information about the ADA4302-4, contact Analog
Devices, Inc. via email at high_current_drivers.com@analog.com.
FUNCTIONAL BLOCK DIAGRAM
SPLITTER
VIN
ILP
VIP
ILN
GND
GND
J1
GND
VCC
VCC
+
VCC
VOP4
VON3
VOP3
VON2
VOP2
VON1
VOP1
05017-016
VON4
Figure 1.
FREQUENCY (MHz)
CS
O (dBc
)
–60
–70
–80
–100
–90
–110
50 100 1000
05017-008
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
Figure 2. Composite Second-Order vs. Frequency