LMH1251 - YPbPr to RGBHV Converter and 2:1 Video Switch

	LMH1251 - YPbPr to RGBHV Converter and 2:1 Video Switch

Datasheet	Packaging	Samples & Pricing	Eval. Boards	Reliability	Knowledge Base

Features

•	YP_BP_R to RGBHV conversion
•	YP_BP_R path: 70 MHz, −3 dB, 700 mV_PP bandwidth
•	RGB path: 400 MHz, −3 dB, 700 mV_PP 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

General Description

The LMH1251 is a wideband 2:1 analog video switch with an integrated YP_BP_R to RGBHV converter. More...

Applications

•	TFT LCD monitor
•	CRT monitor
•	Set-top box
•	Display projector

Typical Application

See Datasheet for Application Information

Parametric Table expand

Parametric Table collapse

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

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
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Typical Performance

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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

Datasheet

RoHS Compliance Information	Size in Kbytes	Date
LMH1251 YP B P R to RGBHV Converter and 2:1 Video Switch	304 Kbytes	2-Jul-08	View Online 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

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

$US each

LMH1251EVAL

YPbPr to RGBHV Converter and 2:1 Video Switch

Full production

N/A

$151.00

N/A

LMH1251MT

TSSOP

STD

NOPB

260

RoHS

N/A

Full production

N/A

100+

$3.49

rail
of
61

NSUZXYTT
LMH1251
MT

6 weeks

500

LMH1251MTX

TSSOP

NOPB

260

RoHS

N/A

Full production

N/A

100+

$3.49

reel
of
2500

NSUZXYTT
LMH1251
MT

6 weeks

10000

General Description

The LMH1251 is a wideband 2:1 analog video switch with an integrated YP_BP_R to RGBHV converter. The device accepts one set of YP_BP_R 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 YP_BP_R 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)
LMH1251MT	CMOS7	0	13906	0	0	862500	5	244736730
LMH1251MTX	CMOS7	0	13906	0	0	862500	5	244736730

Note: The Early Failure Rates were calculated as point estimates. 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
AN-1836: Application Note 1836 LMH1251 Evaluation Board Users Guide v2.0	2267 Kbytes	24-Jun-08	Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 20-Nov-2008]