Features • YPBPR to RGBHV conversion • YPBPR path: 70 MHz, −3 dB, 700 mVPP bandwidth • RGB path: 400 MHz, −3 dB, 700 mVPP bandwidth • 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 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. Applications • TFT LCD monitor • CRT monitor • Set-top box • Display projector

Also Recommended LMH6733 Wideband, Low-distortion Triple Video Amplifier LMH6734 Wideband, Low-distortion Triple Video Buffer LMH6739 Wideband, Low-distortion Triple Video Buffer MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

	Connection Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LMH1251 YP B P R to RGBHV Converter and 2:1 Video Switch	304 Kbytes	2-Jul-08	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1836: Application Note 1836 LMH1251 Evaluation Board Users Guide v2.0	2267 Kbytes	24-Jun-08

More Application Notes

Title		Size	Date	Other Language
	AN-1988: Application Note 1988 LMH0340 / LMH0341 SerDes Family LVDS Timing Overview	148 Kbytes	17-Jul-09
	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
	AN-2002: Application Note 2002 Replacing the CLC014 Adaptive Cable Equalizer with the LMH0074	158 Kbytes	22-Sep-09
	AN-2003: Application Note 2003 Replacing the CLC012 Adaptive Cable Equalizer with the LMH0074	160 Kbytes	6-Oct-09

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH1251MT	CMOS7	0	18406	0	0	1089000	4	309006723
LMH1251MTX	CMOS7	0	18406	0	0	1089000	4	309006723

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.

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