1:2 Single-Ended, Low Cost, Active RF Splitter Data Sheet ADA4304-2 FEATURES FUNCTIONAL BLOCK DIAGRAM 5V 5V Ideal for CATV and terrestrial applications Excellent frequency response 0.1F 0.1F 1.6 GHz, 3 dB bandwidth 1H 1 dB flatness to 1.0 GHz Low noise figure: 4.0 dB VCC IL Low distortion Composite second order (CSO): 62 dBc VOUT1 Composite triple beat (CTB): 72 dBc 0.01F VIN 1 dB compression point of 8.25 dBm ADA4304-2 0.01F 2.8 dB of gain per output channel VOUT2 25 dB output-to-output isolation, 50 MHz to 1000 MHz 0.01F 75 input and outputs GND Integrated output resistors Small package size: 16-lead, 3 mm 3 mm LFCSP Figure 1. APPLICATIONS Set-top boxes Residential gateways CATV distribution systems Splitter modules Digital cable ready (DCR) TVs GENERAL DESCRIPTION 4 The ADA4304-2 is a 75 active splitter for use in applications T = 40C A 3 where a lossless signal split is required. Typical applications 2 include multituner digital set-top boxes, cable splitter modules, T = +85C A 1 multituner/digital cable ready (DCR) televisions, and home T = +25C A 0 gateways where traditional solutions require discrete passive 1 splitter modules with separate fixed gain amplifiers. 2 The ADA4304-2 is fabricated using Analog Devices, Inc. 3 proprietary silicon-germanium (SiGe), complementary bipolar 4 process, enabling it to achieve very low levels of distortion with 5 a noise figure of 4 dB. The part provides a low cost alternative 6 that simplifies designs and improves system performance by 7 integrating a signal splitter element and a gain block into a single 8 50 100 1000 4000 IC. The ADA4304-2 is available in a 16-lead LFCSP and operates FREQUENCY (MHz) in the extended industrial temperature range of 40C to +85C. Figure 2. Gain (S21, S31) vs. Frequency 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. GAIN (dB) 06539-001 06539-011ADA4304-2 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Pin Configuration and Function Descriptions ..............................5 Applications ....................................................................................... 1 Typical Performance Characteristics ..............................................6 Functional Block Diagram .............................................................. 1 Test Circuits ........................................................................................8 General Description ......................................................................... 1 Applications information .................................................................9 Revision History ............................................................................... 2 Circuit Description .......................................................................9 Specifications ..................................................................................... 3 Outline Dimensions ....................................................................... 10 Absolute Maximum Ratings ............................................................ 4 Ordering Guide .......................................................................... 10 Thermal Resistance ...................................................................... 4 ESD Caution .................................................................................. 4 REVISION HISTORY 6/2016Rev. 0 to Rev. A Changed CP-16-1 to CP-16-21 .................................... Throughout Changes to Figure 4 and Table 4 ..................................................... 5 Deleted Evaluation Boards Section, RF Layout Considerations Section, Power Supply Section, and Figure 20 Renumbered Sequentially ....................................................................................... 9 Deleted Figure 21 and Figure 22 ................................................... 10 Updated Outline Dimensions ....................................................... 11 Changes to Ordering Guide .......................................................... 11 5/2007Revision 0: Initial Version Rev. A Page 2 of 10