Active RF Splitter ADA4302-4 FEATURES FUNCTIONAL BLOCK DIAGRAM 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 VCC + GND VON4 VOP4 VCC VON3 VOP3 ILN VIP APPLICATIONS VIN J1 ILP VOP2 For more information about the ADA4302-4, contact Analog Devices, Inc. via email at [email protected]. VOP1 Figure 1. –60 –70 CSO (dBc) 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. VON1 GND 05017-016 VCC 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. VON2 –80 TA = +85°C –90 TA = +25°C –100 –110 50 TA = –40°C 05017-008 Cable set-top boxes Home gateways CATV distribution systems Cable splitter modules SPLITTER GND 100 1000 FREQUENCY (MHz) Figure 2. Composite Second-Order vs. Frequency 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. ADA4302-4 © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05017F–0–10/04(Sp0) Rev. Sp0 | Page 2 of 2