GS12281 datasheet(3/97 Pages) SEMTECH

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GS12281

Final Data Sheet

Rev.9

PDS-061385

February 2019

3 of 97

Semtech

Proprietary & Confidential

www.semtech.com

Revision History

Contents

1. Pin Out .................................................................................................................................................................5

1.1 GS12281 Pin Assignment ................................................................................................................5

1.2 GS12281 Pin Descriptions ...............................................................................................................6

2. Electrical Characteristics................................................................................................................................9

2.1 Absolute Maximum Ratings ...........................................................................................................9

2.2 DC Electrical Characteristics ........................................................................................................ 10

2.3 AC Electrical Characteristics ......................................................................................................... 12

3. Input/Output Circuits.................................................................................................................................. 15

4. Detailed Description.................................................................................................................................... 16

4.1 Device Description .......................................................................................................................... 16

4.1.1 Sleep Mode............................................................................................................................ 16

4.2 Trace Equalizer ................................................................................................................................. 17

4.2.1 Input Trace Equalization ................................................................................................... 17

4.2.2 Carrier Detect, and Loss of Signal.................................................................................. 18

4.3 Serial Digital Re-timer (CDR) ........................................................................................................ 19

4.3.1 PLL Loop Bandwidth Control .......................................................................................... 20

4.3.2 Automatic and Manual Rate Detection....................................................................... 20

4.3.3 Lock Time ............................................................................................................................... 21

Version

ECO

PCN

Date

Changes and/or Modifications

044484

—

February 2019

Updated Input Voltage Range (DDI, DDI) and Table 5-3: Control

043494

—

August 2018

Updated Table 5-4.

043023

—

July 2018

Updated Figure 1-1, Table 1-1, Table 2-2, Section 4.9.8 and

Section 6.

041055

—

July 2018

Updated Section 4.9.5.6, Section 4.7.5.2 and Section 5.

040340

—

January 2018

Updated Table 2-2, Section 4.2.2 and Section 5.

037848

—

August 2017

Added Section 4.7.3, added pin compatibility to list of key

features, updated Section 6.1, updated Table 2-2 and Table 2-3.

037303

—

June 2017

Updated Table 2-2, Section 4.5, Table 5-3, Figure 6-1,

Section 4.9.13 and added Section 4.9.12.

036700

—

May 2017

Rewrite of Section 4.4, Section 4.5, Section 4.6, Section 4.7.4



Updated Table 2-2, Table 2-3, Table 5-3 and Table 5-4

034008

—

November 2016

Updated Table 1-1, Table 2-1, Figure 4-8, Table 4-12, Figure 6-1 as

per Errata (PDS-061434)

033175

—

October 2016

New Document.

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