GS3441 Extended Reach 3G/HD/SD Adaptive Cable

Equalizer with Dual Outputs

Final Data Sheet

Rev. 1

GENDOC-056647

May 2013

3 of 25

Proprietary & Confidential

www.semtech.com

Contents

1. Pin Out...............................................................................................................................................................4

1.1 GS3441 Pin Assignment .................................................................................................................4

1.2 GS3441 Pin Descriptions ................................................................................................................4

2. Electrical Characteristics ............................................................................................................................7

2.1 Absolute Maximum Ratings ..........................................................................................................7

2.2 DC Electrical Characteristics ........................................................................................................7

2.3 AC Electrical Characteristics ..................................................................................................... 10

3. Input/Output Circuits ............................................................................................................................... 12

4. Detailed Description.................................................................................................................................. 14

4.1 Serial Digital Inputs ...................................................................................................................... 14

4.2 Automatic (Adaptive) Cable Equalization ............................................................................. 14

4.3 Differential Digital Data Outputs ............................................................................................. 14

4.4 Programmable Squelch Adjust (SQ_ADJ) .............................................................................. 15

4.5 Carrier Detect, Sleep, and Auto-Sleep .................................................................................... 15

4.6 GAIN_SEL ......................................................................................................................................... 16

4.7 Adjustable Output Swing, De-Emphasis and Mute ............................................................ 16

4.8 Cable Length Indicator (CLI) ...................................................................................................... 18

5. Application Information .......................................................................................................................... 19

5.1 High Gain Adaptive Cable Equalizers .................................................................................... 19

5.2 PCB Layout ....................................................................................................................................... 19

5.3 Typical Application Circuit ........................................................................................................ 20

6. Package & Ordering Information .......................................................................................................... 21

6.1 Package Dimensions ..................................................................................................................... 21

6.2 Packaging Data ............................................................................................................................... 21

6.3 Recommended PCB Footprint ................................................................................................... 22

6.4 Marking Diagram ........................................................................................................................... 22

6.5 Solder Reflow Profiles .................................................................................................................. 23

6.6 Ordering Information ................................................................................................................... 23