THS8135PHPG4

更新时间： 2024-11-18 21:55:43

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
23页	339K
描述
TRIPLE 10-BIT, 240 MSPS VIDEO DAC WITH TRI-LEVEL SYNC AND VIDEO (ITU-R.BT601) COMPLIANT FULL SCALE RANGE

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THS8135PHPG4 数据手册

THS8135

TRIPLE 10-BIT, 240 MSPS VIDEO DAC WITH TRI-LEVEL SYNC AND VIDEO

(ITU-R.BT601)—COMPLIANT FULL SCALE RANGE

SLAS343A – MAY 2001 – REVISED JUNE 2002

Bi-Level (EIA) or Tri-Level (SMPTE) Sync

Generation

features

Triple 10-Bit D/A Converters

240-MSPS Operation

Integrated Sync-On-Green/Luminance or

Sync-On-All Composite Sync Insertion

YPbPr/RGB Configurable Blanking Levels,

Correctly Positioned for Either Full

(0–1023) or Video (ITU–R.BT601) –

Compliant Input Code Ranges

Internal Voltage Reference

Low-Power Operation From 3.3-V Analog

and 1.8-V Digital Suply Levels

Generic Triple DAC Mode for Non-Video

Applications

applications

High-Definition Television (HDTV) Set-Top

Boxes/Receivers/Displays

Direct Drive of Double-Terminated 75-Ω

Load Into Standard Video Levels

High-Resolution Image Processing

3x10 Bit 4:4:4, 2x10 Bit 4:2:2 or 1x10 Bit

4:2:2 (ITU–R.BT656) Multiplexed

YCbCr/GBR Input Data Formats

description

The THS8135 is a general-purpose triple high-speed D/A converter optimized for use in video/graphics

applications. The device operates from 3.3-V analog and 1.8-V digital supplies. The THS8135 performance is

assuredatasamplingrateupto240MSPS. TheTHS8135consistsofthree10-bitD/Aconvertersandadditional

circuitry for bi-level/tri-level sync and blanking level generation. By providing a dc offset for the lowest video

amplitude output in video DAC mode, the device can insert a (negative) bi-level or (negative/positive) tri-level

sync on either only the green/luminance (sync-on-green/sync-on-Y) channel or on all channels for video

applications. A generic DAC mode avoids this dc offset, making this device suitable for non-video applications

as well.

The THS8135 is a footprint-compatible functional upgrade to the THS8133. In addition, the THS8135 allows

a higher update rate for oversampled video digitizing for all PC graphics formats up to UXGA (1600x1200)

resolution at 85 Hz and all practical digital TV formats including HDTV. The support for oversampling

significantly reduces the complexity of the analog reconstruction filter required behind the DAC.

Standard video levels can be generated for the full 10-bit input code range. Alternatively, the same levels can

be reached from a reduced input code range compliant to the video sampling standard ITU-R.BT-601. In that

case, the full-scale range of the DAC is dependent on the RGB or YCbCr color space configuration of the device.

When configured for RGB operation, full video output swing is reached for input codes 64-940 on all channels.

When configured for YCbCr operation, code range 64-940 on Y and code range 64-960 on Cb and Cr channels

generate full output swing using internal amplitude scaling on these color components. The device provides

headroom to accommodate under-/over-shoot outside the ITU-R.BT601 range to allow the generation of

ITU-R.BT601 illegal colors or super-black / super-white levels.

A digital control input for insertion of a reference (blanking) level on the analog outputs is included. The

amplitudeoftheblankinglevelisconfigurableforeitherRGBorYPbPrcomponentoutputsandforfullorreduced

input code ranges. The inserted sync output amplitude(s) always has the required 7:3 ratio to the full-scale video

amplitude.

The current-steering DACs can be directly terminated in resistive loads to produce voltage outputs. The device

provides a flexible configuration of maximum output current drive. The devices output drivers have been

specifically designed to produce standard video output levels when directly connected to a single-ended

double-terminated 75-Ω coaxial cable.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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THS8135PHPG4 替代型号

型号	品牌	替代类型	描述	数据表
THS8135PHP	TI	类似代替	TRIPLE 10-BIT, 240 MSPS VIDEO DAC WITH TRI-LEVEL SYNC AND VIDEO (ITU-R.BT601) COMPLIANT FU

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THS8200-EP	TI	获取价格	All-Format Oversampled Component Video/PC Graphics D/A System With Three 11-Bit DACs, CGMS
THS8200IPFP	TI	获取价格	All-Format Oversampled Component Video/PC Graphics D/A System
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THS8200PFP	TI	获取价格	ALL FORMAT OVERSAMPLED COMPONENT VIDEO/PC GRAPHICS D/A SYSTEM WITH THREE 11-BIT DACS,CGMS

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