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LMH1251 -
YPbPr to RGBHV Converter and 2:1 Video Switch
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Features
| • | YPBPR to RGBHV conversion
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| • | YPBPR path: 70 MHz, −3 dB, 700 mVPP bandwidth
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| • | RGB path: 400 MHz, −3 dB, 700 mVPP bandwidth
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| • | Supports PC video display resolutions up to UXGA (1600 x 1200 @ 75 Hz) |
| • | Supports 480i, 480p, 576i, 576p, 720p, 1080i, and 1080p |
| • | Smart video format detection for SD and HD |
| • | Power save mode |
General Description
The LMH1251 is a wideband 2:1 analog video switch with an integrated YPBPR to RGBHV converter. More...
Applications
| • | TFT LCD monitor |
| • | CRT monitor |
| • | Set-top box |
| • | Display projector |
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| Parameters | Values |
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| Function |
Analog Video Converter |
| Supported Video Formats |
RGBHV: Up to 1600x1200 @ 75 Hz, YPbPr: 480i/p, 720p, 1080i/p |
| Supply Voltage |
5 Volt |
| OtherSupply Voltage |
Undefined |
| Temperature Min |
0 deg C |
| Temperature Max |
70 deg C |
Typical Performance
click for larger image
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Also Recommended
| LMH6733 | Wideband, Low-distortion Triple Video Amplifier |
| LMH6734 | Wideband, Low-distortion Triple Video Buffer |
| LMH6739 | Wideband, Low-distortion Triple Video Buffer |
Connection Diagram
click for larger image
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Datasheet
RoHS Compliance Information
| Size in Kbytes | Date |
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| LMH1251 YP B P R to RGBHV Converter and 2:1 Video Switch |
304
Kbytes |
2-Jul-08 |
Download |
LMH1251 YP B P R to RGBHV Converter and 2:1 Video Switch (Japanese)
 |
493 Kbytes |
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Package Availability, Models, Samples & Pricing
General Description
The LMH1251 is a wideband 2:1 analog video switch with an integrated YPBPR to RGBHV converter. The device accepts one set of YPBPR inputs and one set of RGB/HSYNC/VSYNC inputs. Based on the input selected, the output will be either a decoded TV or buffered
PC video signal.
The LMH1251 has a SYNC separator and processor that is capable of extracting sync timing information from both Standard Definition
Television (SDTV) and High Definition Television (HDTV) inputs. It provides bi-level sync, and tri-level sync separation.
The color space conversion from YPBPR to RGB in the LMH1251 is realized with a very high precision fully analog dematrixer which provides superior chroma accuracy
that is less than 2.5% of amplitude and 1.5° of phase error on a vectorscope. It is equipped with a smart video detection
circuit which automatically senses SDTV and HDTV video formats and applies the appropriate color space conversion.
The LMH1251 is capable of handling SDTV, HDTV, XGA, SXGA, and UXGA video formats, which makes it an ideal solution for enhancing
value in applications ranging from LCD monitors, to set-top boxes, to projectors. The LMH1251 is part of the LMH high speed amplifier family, and is offered in a TSSOP-24 package.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
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LMH1251MT | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
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LMH1251MTX | 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-1836: Application Note 1836 LMH1251 Evaluation Board Users Guide v2.0 |
2267
Kbytes |
24-Jun-08 |
Download |
[Information as of 7-Nov-2009]
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