GS1881-CKA View Datasheet(PDF) - Gennum -> Semtech

Part Name

Description

Manufacturer

GS1881-CKA

Monolithic Video Sync Separators

Gennum -> Semtech 

Revision History

Version

Date

Changes and/or Modifications

5

November 2009 Updated to latest Gennum template and changed from

document number 52023 to 6926.

4

July 2004

Added lead-free and green information.

3

–

Revisions made.

2

–

Revisions made.

1

March 1991 New document.

Contents

Features ................................................................................................................................................................. 1

Application Selection Chart ...........................................................................................................................1

Description ........................................................................................................................................................... 1

Revision History .................................................................................................................................................2

1. Pin Connections .............................................................................................................................................3

1.1 Pin Connections ................................................................................................................................3

2. Electrical Characteristics ............................................................................................................................4

2.1 GS1881 Electrical Characteristics ...............................................................................................4

2.2 GS4881 Electrical Characteristics ...............................................................................................5

2.3 GS4981 Electrical Characteristics ...............................................................................................6

2.4 Typical Performance Characteristics .........................................................................................8

3. Temperature Characteristics .................................................................................................................. 11

4. Circuit Description..................................................................................................................................... 14

4.1 Composite Video Input (Pin 2) and Composite Sync Output (Pin 1) ............................. 14

4.2 Back Porch Output (Pin 5) ........................................................................................................... 15

4.3 Vertical Sync Output (Pin 3) ....................................................................................................... 16

4.4 Odd/Even Field Output (Pin 7 GS1881, GS4881) ................................................................ 16

4.5 Horizontal Output (Pin 7 GS4981) ............................................................................................ 17

4.6 Block Diagrams .............................................................................................................................. 17

5. Application Notes....................................................................................................................................... 20

5.1 Choosing the Appropriate Input Capacitor to Optimize Slicing Level and

Hum Rejection ....................................................................................................................................... 20

5.2 Filtering ............................................................................................................................................. 22

5.3 Deriving Odd/Even Using the GS4981 ................................................................................... 25

6. Ordering Information................................................................................................................................ 27

6.1 GS1881 Ordering Information .................................................................................................. 27

6.2 GS4881 Ordering Information .................................................................................................. 27

6.3 GS4981 Ordering Information .................................................................................................. 28

GS1881, GS4881, GS4981 Monolithic Video Sync

Separators

Data Sheet

6926 - 5

November 2009

2 of 29

Proprietary & Confidential

Share Link: