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LM1881 -
Video Sync Separator
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Features
| • | AC coupled composite input signal |
| • | >10 k input resistance |
| • | <10 mA power supply drain current |
| • | Composite sync and vertical outputs |
| • | Odd/even field output |
| • | Burst gate/back porch output |
| • | Horizontal scan rates to 150 kHz |
| • | Edge triggered vertical output |
| • | Default triggered vertical output for non-standard video signal (video games-home computers) |
General Description
The LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative going sync NTSC, PAL* and SECAM video signals with amplitude from 0.5V to 2V p-p. More...
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Typical Application
click for larger image
| Parameters | Values |
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| Function |
Sync Separator |
| Supported Video Formats |
NTSC , SECAM , Bi-level sync only, PAL |
| Supply Voltage |
5 Volt |
| OtherSupply Voltage |
5V to 12V |
| Temperature Min |
0 deg C |
| Temperature Max |
70 deg C |
Typical Performance
click for larger image
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Also Recommended
| LMH1980▲ | High Definition Compatibility, Smaller Form Factor Version |
| LMH1981▲ | High Definition Compatibility, Ultra-Low Jitter Version |
Additional Resources
Application Notes
Connection Diagram
click for larger image
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Datasheet
Package Availability, Models, Samples & Pricing
| Obsolete Part | Alternate Part or
Supplier | Source | Last Time Buy Date |
LM1881M-X
| LMH1980MM
| NATIONAL SEMICONDUCTOR
| 23 Feb 2007
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LM1881MX-X
| LMH1980MM
| NATIONAL SEMICONDUCTOR
| 23 Feb 2007
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LM1881N-X
| LMH1980MM
| NATIONAL SEMICONDUCTOR
| 23 Feb 2007
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General Description
The LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative going sync NTSC, PAL* and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals. The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LM1881M | SLM | 0 | 44046 | 0 | 0 | 3532500 | 1 | 1002356520
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LM1881MX | SLM | 0 | 44046 | 0 | 0 | 3532500 | 1 | 1002356520
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LM1881N | SLM | 0 | 44046 | 0 | 0 | 3532500 | 1 | 1002356520
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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-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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More Application Notes
| Title | Size in Kbytes |
Date |
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| AN-402: LM2889 RF Modulator |
210
Kbytes |
4-Nov-95 |
Download |
[Information as of 7-Nov-2009]
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RoHS Compliance Information
