GS3440 Adaptive Cable Equalizer

Final Data Sheet

Rev. 2

December 2012

3 of 23

Proprietary and Confidential

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