RoHS Compliance Information	Size in Kbytes	Date
LMH1981 Multi-Format Video Sync Separator	1613 Kbytes	11-Jul-07	Download
LMH1981 Multi-Format Video Sync Separator (Japanese)	712 Kbytes

Part Number

Package

Factory Lead Time

Models

Samples & Electronic Orders

Budgetary Pricing

Std Pack Size

Package Marking Format

Type

Pins

Spec.

MSL Rating

Peak Reflow

RoHS Report

CAD Symbols

Weeks

Qty

Qty

$US each

ML571-1982CLK

High-Performance SMPTE Video Clock Module for Xilinx ML571 Serial Digital Video Board

Full production

N/A

1+

$299.00

1

-

N/A

N/A

LMH1981MT

TSSOP

14

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$5.15

rail of 94

NSUZXYTT LMH19 81MT

6 weeks

500

LMH1981MTX

TSSOP

14

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$5.15

reel of 2500

NSUZXYTT LMH19 81MT

8 weeks

3000

LMH1981MTEVAL

Evaluation Board for the LMH1981 Multi-Format Video Sync Separator

Full production

N/A

1+

$99.00

1

-

N/A

N/A

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 SD/ED/HD video signals with either bi-level or tri-level sync, and the outputs provide all of the critical timing signals in CMOS logic, which swing from rail-to-rail (V_CC and GND) including Composite, Horizontal, and Vertical Syncs, Burst/Back Porch Timing, Odd/Even Field, and Video Format Outputs. HSync features very low jitter on its leading (falling) edge, minimizing external circuitry needed to clean and reduce jitter in subsequent clock generation stages.

The LMH1981 automatically detects the input video format, eliminating the need for programming using a microcontroller, and applies precise 50% sync slicing to ensure accurate sync extraction at O_H, even for inputs with irregular amplitude from improper termination or transmission loss. Its unique Video Format Output conveys the total horizontal line count per field as an 11-bit binary serial data stream, which can be decoded by the video system to determine the input video format and enable dynamic adjustment of system parameters, i.e.: color space or scaler conversions. The LMH1981 is available in a 14-pin TSSOP package and operates over a temperature range of −40°C to +85°C.

Reliability Metrics

Application Notes

Title	Size in Kbytes	Date
AN-1599: Application Note 1599 LMH1981 Evaluation Board Instruction Manual	503 Kbytes	11-Feb-09	Download
AN-1841: Application Note 1841 LMH1982 Evaluation Board User Guide	913 Kbytes	21-May-08	Download
AN-1841 (Chinese): Application Note 1841 LMH1982 Evaluation Board User Guide	599 Kbytes
AN-1893: Application Note 1893 Demonstrating SMPTE-Compliant SDI Output Jitter Using the LMH1982 and Virtex-5 GTP Transmitter	2197 Kbytes	3-Oct-08	Download
AN-1971: Application Note 1971 Triple Rate SDI IP FPGA Resource Utilization on the SDXILEVK/AES-EXP-SDI-G Reference Design	195 Kbytes	6-May-09	Download

More Application Notes

Title	Size in Kbytes	Date
AN-1681: Application Note 1681 Design Migration from the LM1881 to the LMH1980	143 Kbytes	2-Aug-07	Download
AN-1681 (Japanese): Application Note 1681 Design Migration from the LM1881 to the LMH1980	119 Kbytes
AN-1618: Application Note 1618 LMH1980 Evaluation Board Instruction Manual	674 Kbytes	19-Jul-07	Download
AN-1618 (Japanese): Application Note 1618 LMH1980 Evaluation Board Instruction Manual	412 Kbytes