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LMH1981 Datasheet Multi-Format Video Sync Separator

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

The LMH1981 is a high performance multi-format sync separator ideal for use in a wide range of video applications, such as broadcast and professional video equipment and HDTV/ DTV systems.

The input accepts standard analog video signals with either bi-level or tri-level sync, and the outputs provide all of the critical timing signals in CMOS logic, including composite, horizontal, and vertical syncs, burst/back porch timing, odd/ even field, and video format outputs.

The horizontal sync output

Overview

www.DataSheet4U.com LMH1981 Multi-Format Video Sync Separator PRELIMINARY April 2006 LMH1981 Multi-Format Video Sync.

Key Features

  • very low jitter, minimizing external circuitry needed to clean and reduce jitter in subsequent sync processing stages. The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller or external RSET resistor. The sync separator applies precise 50% sync slicing to ensure accurate sync extraction for inputs with irregular amplitude, offset, and noise conditions. Its unique video format feature (pin 9) outputs the total vertical scan lines per.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
ETCTI LMH1981 LMH1981 Multi-Format Video Sync Separator (Rev. H) ETCTI

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