GS2994 Datasheet, PDF (3/20 Pages) Semtech Corporation – GS2994 Adaptive Cable Equalizer

Contents
1. Pin Out...............................................................................................................................................................4
1.1 GS2994 Pin Assignment .................................................................................................................4
1.2 GS2994 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
3. Input/Output Circuits ..................................................................................................................................9
4. Detailed Description.................................................................................................................................. 11
4.1 Serial Data Inputs .......................................................................................................................... 11
4.2 Cable Equalization ........................................................................................................................ 11
4.3 Serial Digital Outputs ................................................................................................................... 12
4.4 Programmable Squelch Adjust (SQ_ADJ) .............................................................................. 12
4.5 Carrier Detect, Sleep, and Auto-Sleep .................................................................................... 13
4.6 GAIN_SEL ......................................................................................................................................... 14
4.7 Adjustable Output Swing, De-Emphasis and Mute ............................................................ 14
5. Application Information .......................................................................................................................... 15
5.1 High Gain Adaptive Cable Equalizers .................................................................................... 15
5.2 PCB Layout ....................................................................................................................................... 15
5.3 Typical Application Circuit ........................................................................................................ 16
6. Package & Ordering Information .......................................................................................................... 17
6.1 Package Dimensions ..................................................................................................................... 17
6.2 Packaging Data ............................................................................................................................... 17
6.3 Recommended PCB Footprint ................................................................................................... 18
6.4 Marking Diagram ........................................................................................................................... 18
6.5 Solder Reflow Profiles .................................................................................................................. 19
6.6 Ordering Information ................................................................................................................... 19
GS2994 GS2994 Adaptive Cable Equalizer
Data Sheet
53967 - 4
August 2012
3 of 20