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LMH1251, LMH1251M, LMH1251MTX

Table of contents:
Info of LMH1251
Info of LMH1251M
Info of LMH1251MTX

LMH1251, LMH1251M, LMH1251MTX Selling Leads, Datasheet

MFG:NS Package Cooled:0 D/C:07+

LMH1251, LMH1251M, LMH1251MTX Datasheet download

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Part Number: LMH1251

MFG: NS

Package Cooled: 0

D/C: 07+

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LMH1251 General Description

The LMH™1251 is a wideband 2:1 analog video switch
an integrated YP_BP_R to RGB decoder. 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 be either a decoded TV or buffered PC video signal.

The LMH1251 has a SYNC separator and processor that 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 LMH1251 is realized with a very high precision fully analog dematrixer that provides chrominance accuracy that is than 2.5% of amplitude & 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 available in a TSSOP-24 package.

LMH1251 Maximum Ratings

ESD Tolerance
Susceptibility(Note 4) ..........................................................4.0 kV
Machine Model (Note 11) ......................................................400V
Supply Voltage V_CC, Pins 7 and ........................................17 5.5V
Voltage at any Input Pin (V_IN) ....................V_CC −0.5 V_IN 0V
Video Inputs (pk-pk) ........................................0.0V V_IN 1.2V
Thermal Resistance to Ambient (_JA) ...............................110/W
Thermal Resistance to Case(_JC) .......................................25/W
Junction Temperature (T_J) ..................................................+150
Storage Temperature Range ...............................−65 to +150
Lead Temperature (soldering 10 sec.) .................................265

LMH1251 Features

·YP_BP_R to RGB decoding
·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

LMH1251 Typical Application

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

LMH1251 Connection Diagram

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