GS3440 Datasheet, PDF (3/23 Pages) Semtech Corporation – Extended Reach 3G/HD/SD Adaptive Cable Equalizer

Contents
Key Features ........................................................................................................................................................1
Applications ......................................................................................................................................................... 1
Description ........................................................................................................................................................... 1
Description (continued) ...................................................................................................................................2
1. Pin Out...............................................................................................................................................................4
1.1 GS3440 Pin Assignment .................................................................................................................4
1.2 GS3440 Pin Descriptions ................................................................................................................4
2. Electrical Characteristics ............................................................................................................................7
2.1 Absolute Maximum Ratings ..........................................................................................................7
2.2 DC Electrical Characteristics ........................................................................................................7
2.3 AC Electrical Characteristics ........................................................................................................9
3. Input/Output Circuits ............................................................................................................................... 11
4. Detailed Description.................................................................................................................................. 13
4.1 Serial Digital Inputs ...................................................................................................................... 13
4.2 Automatic (Adaptive) Cable Equalization ............................................................................. 13
4.3 Differential Digital Data Output ............................................................................................... 13
4.4 Programmable Squelch Adjust (SQ_ADJ) .............................................................................. 14
4.5 Carrier Detect, Sleep, and Auto-Sleep .................................................................................... 14
4.6 GAIN_SEL ......................................................................................................................................... 15
4.7 Adjustable Output Swing, De-Emphasis and Mute ............................................................ 15
5. Application Information .......................................................................................................................... 17
5.1 High-Gain Adaptive Cable Equalizers .................................................................................... 17
5.2 PCB Layout ....................................................................................................................................... 17
5.3 Typical Application Circuit ........................................................................................................ 18
6. Package & Ordering Information .......................................................................................................... 19
6.1 Package Dimensions ..................................................................................................................... 19
6.2 Packaging Data ............................................................................................................................... 19
6.3 Recommended PCB Footprint ................................................................................................... 20
6.4 Marking Diagram ........................................................................................................................... 20
6.5 Solder Reflow Profiles .................................................................................................................. 21
6.6 Ordering Information ................................................................................................................... 21
Appendix - Relevant Documentation...................................................................................................... 21
Revision History (Document # 56482) ..................................................................................................... 22
GS3440 Adaptive Cable Equalizer
Final Data Sheet
Rev. 2
December 2012
3 of 23
Proprietary and Confidential