GS2974B Datasheet, PDF (3/17 Pages) Gennum Corporation – HD-LINX III Adaptive Cable Equalizer

Contents
Features ................................................................................................................................................................. 1
Applications ......................................................................................................................................................... 1
Description ........................................................................................................................................................... 1
Revision History .................................................................................................................................................2
1. Pin Out...............................................................................................................................................................4
1.1 GS2974B Pin Assignment ...............................................................................................................4
1.2 GS2974B Pin Descriptions .............................................................................................................4
2. Electrical Characteristics ............................................................................................................................6
2.1 Absolute Maximum Ratings ..........................................................................................................6
2.2 DC Electrical Characteristics ........................................................................................................6
2.3 AC Electrical Characteristics ........................................................................................................7
Test Circuit ...........................................................................................................................................................8
3. Input/Output Circuits ..................................................................................................................................8
4. Detailed Description.....................................................................................................................................9
4.1 Serial Digital Inputs .........................................................................................................................9
4.2 Cable Equalization ........................................................................................................................ 10
4.3 Programmable Maximum Cable Length Adjust (MCLADJ) ............................................. 10
4.4 Mute and Carrier Detect .............................................................................................................. 11
5. Application Information .......................................................................................................................... 12
5.1 High Gain Adaptive Cable Equalizers .................................................................................... 12
5.2 PCB Layout ....................................................................................................................................... 12
5.3 Typical Application Circuit ........................................................................................................ 13
6. Package & Ordering Information .......................................................................................................... 14
6.1 Package Dimensions ..................................................................................................................... 14
6.2 Packaging Data ............................................................................................................................... 14
6.3 Recommended PCB Footprint ................................................................................................... 15
6.4 Marking Diagram ........................................................................................................................... 15
6.5 Solder Reflow Profiles .................................................................................................................. 16
6.6 Ordering Information ................................................................................................................... 16
GS2974B GS2974B HD-LINX™ III Adaptive Cable
Equalizer
Data Sheet
45062 - 3
April 2009
3 of 17