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LMH1980 -
Auto-Detecting SD/HD/PC Video Sync Separator
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Features
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Analog video sync separation for NTSC, PAL, 480I/P, 576I/P, 720P, 1080I/P/PsF, and many VESA-compatible timing formats
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Composite Video (CVBS), S-Video (Y/C), and Component Video (YPBPR/GBR) and PC Graphics (RGsB) interfaces
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SD/PC Bi-level sync & HD tri-level sync compatible
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Composite, Horizontal, and Vertical Sync outputs
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Burst/Back Porch Timing, Odd/Even Field, and HD Detect Flag outputs
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Automatic video format detection
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Fixed-level sync slicing for video inputs from 0.5 to 2 VPP
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3.3V to 5V supply operation
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General Description
The LMH1980 is an auto-detecting SD/HD/PC video sync separator ideal for use in a wide range of video applications, such as
automotive LCD monitors, video capture & editing devices, surveillance & security equipment, and machine vision and inspection
systems.
The LMH1980 accepts an analog video input signal with either bi-level or tri-level sync and automatically detects the video
format, eliminating the need for external RSET resistor adjustment required by other sync separators (e.g.: LM1881). More...
Applications
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Consumer, Professional, Automotive & Industrial Video
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Video Capture, Editing, and Processing
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Genlock Circuits
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Surveillance & Security Video Systems
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Set-Top Boxes (STB) & Digital Video Recorders (DVR)
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LCD / Plasma Displays and Video Projectors
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Machine Vision and Inspection Systems
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Video Trigger Oscilloscopes and Waveform Monitors
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| Parameters | Values |
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| Function |
Sync Separator |
| Supported Video Formats |
NTSC , SECAM , SD/PC bi-level and HD tri-level sync, 720p , 1080i/p , PC Sync on Green (VESA), 576i/p , 480i/p , PAL |
| Supply Voltage |
3.3 Volt |
| OtherSupply Voltage |
3.3V to 5V |
| Temperature Min |
-40 deg C |
| Temperature Max |
85 deg C |
Also Recommended
| LMH1981▲ | For Lower Jitter, Higher Performance |
Additional Resources
Application Notes
Connection Diagram
click for larger image
Pinout
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Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
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| LMH1980 Auto-Detecting SD/HD/PC Video Sync Separator |
746
Kbytes |
6-Jul-07 |
Download |
LMH1980 Auto-Detecting SD/HD/PC Video Sync Separator (Japanese)
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526 Kbytes |
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Package Availability, Models, Samples & Pricing
General Description
The LMH1980 is an auto-detecting SD/HD/PC video sync separator ideal for use in a wide range of video applications, such as
automotive LCD monitors, video capture & editing devices, surveillance & security equipment, and machine vision and inspection
systems.
The LMH1980 accepts an analog video input signal with either bi-level or tri-level sync and automatically detects the video
format, eliminating the need for external RSET resistor adjustment required by other sync separators (e.g.: LM1881). The outputs provide timing signals in CMOS logic, including
Composite, Horizontal, and Vertical Syncs, Burst/Back Porch Timing, and Odd/Even Field outputs. The
^HD flag output (pin 5) provides a logic low signal only when a valid HD video input with tri-level sync is detected. The
^HD flag can be used to disable an external switch-controlled SD chroma filter when HD video is detected, or enable it when SD
video is detected. For non-standard video with bi-level sync and without vertical serration pulses, a default vertical sync
pulse will be output and no horizontal sync pulses will be output during the vertical sync interval.
The LMH1980 is available in a space-saving 10-ld. Mini-SO Package (MSOP) and operates over a temperature range of −40°C to
+85°C.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LMH1980MM | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
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LMH1980MMX | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
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Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Application Notes
| Title | Size in Kbytes |
Date |
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| 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
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412 Kbytes |
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| 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
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119 Kbytes |
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| 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
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599 Kbytes |
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More Application Notes
| Title | Size in Kbytes |
Date |
|
| 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 |
| 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-1599: Application Note 1599 LMH1981 Evaluation Board Instruction Manual |
503
Kbytes |
11-Feb-09 |
Download |
[Information as of 7-Nov-2009]
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