1:3 and 1:4 Single-Ended, Low Cost, Active RF Splitters Data Sheet ADA4304-3/ADA4304-4 FEATURES FUNCTIONAL BLOCK DIAGRAMS 5V 5V Ideal for CATV and terrestrial applications 2.4 GHz, 3 dB bandwidth 0.1F 0.1F 1 dB flatness: 54 MHz to 865 MHz 1H Low noise figure: 4.6 dB Low distortion VCC IL Composite second-order (CSO): 62 dBc Composite triple beat (CTB): 72 dBc VOUT1 Nominal 3 dB gain per output channel 0.01F VOUT2 VIN 25 dB output-to-output isolation, 50 MHz to 1000 MHz ADA4304-3 0.01F 0.01F 75 input and outputs VOUT3 Small package size: 16-lead, 3 mm 3 mm LFCSP 0.01F GND APPLICATIONS Set-top boxes Residential gateways Figure 1. CATV distribution systems 5V 5V Splitter modules Digital cable ready (DCR) TVs 0.1F 0.1F 1H VCC IL VOUT1 0.01F VOUT2 VIN 0.01F ADA4304-4 VOUT3 0.01F 0.01F VOUT4 0.01F GND Figure 2. GENERAL DESCRIPTION The ADA4304-3/ADA4304-4 are 75 active splitters for use in The ADA4304-3/ADA4304-4 are fabricated using the applications where a lossless signal split is required. Typical Analog Devices, Inc., proprietary silicon germanium (SiGe), applications include multituner digital set-top boxes, cable complementary bipolar process, enabling them to achieve very splitter modules, multituners/digital cable ready (DCR) low levels of distortion with a noise figure of 4.6 dB. The parts televisions, and home gateways where traditional solutions provide low cost alternatives that simplify designs and improve require discrete passive splitter modules with separate fixed system performance by integrating a signal splitter element and gain amplifiers. a gain block into a single IC. The ADA4304-3/ADA4304-4 are available in a 16-lead LFCSP and operate in the extended industrial temperature range of 40C to +85C. Rev. A Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 07082-002 07082-001ADA4304-3/ADA4304-4 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Pin Configurations and Function Descriptions ............................5 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................6 Functional Block Diagrams ............................................................. 1 Test Circuits ........................................................................................9 General Description ......................................................................... 1 Applicat ions ..................................................................................... 10 Revision History ............................................................................... 2 Circuit Description .................................................................... 10 Specif icat ions ..................................................................................... 3 Outline Dimensions ....................................................................... 11 Absolute Maximum Ratings ............................................................ 4 Ordering Guide .......................................................................... 11 Thermal Resistance ...................................................................... 4 ESD Caution .................................................................................. 4 REVISION HISTORY 7/2016Rev. 0 to Rev. A Changes to Figure 4, Figure 5, Table 4, and Table 5 ..................... 5 Deleted Evaluation Boards Section, RF Layout Considerations Section, Power Supply Section, and Figure 21 Renumbered Sequentially ..................................................................................... 10 Deleted Figure 22 and Figure 23 ................................................... 11 Updated Outline Dimensions ....................................................... 12 Changes to Ordering Guide .......................................................... 12 11/2007Revision 0: Initial Version Rev. A Page 2 of 11