THS8200IPFP Datasheet, PDF (10/104 Pages) Texas Instruments – All-Format Oversampled Component Video/PC Graphics D/A System

THS8200-EP
SLES253 – DECEMBER 2009
www.ti.com
2 Overview
2.1 Description
THS8200 is a complete video back-end D/A solution for DVD players, personal video recorders and
set-top boxes, or any system requiring the conversion of digital component video signals into the analog
domain.
THS8200 can accept a variety of digital input formats, in both 4:4:4 and 4:2:2 formats, over a 3×10-bit,
2×10-bit or 1×10-bit interface. The device synchronizes to incoming video data either through dedicated
Hsync/Vsync inputs or through extraction of the sync information from embedded sync (SAV/EAV) codes
inside the video stream. Alternatively, when configured for generating PC graphics output, THS8200 also
provides a master timing mode in which it requests video data from an external (memory) source.
THS8200 contains a display timing generator that is completely programmable for all standard and
nonstandard video formats up to the maximum supported pixel clock of 205 MSPS. Therefore, the device
supports all component video and PC graphics (VESA) formats. A fully-programmable 3×3 matrixing
operation is included for color space conversion. All video formats, up to the HDTV 1080I and 720P
formats, can also be internally 2× oversampled. Oversampling relaxes the need for sharp external analog
reconstruction filters behind the DAC and improves the video frequency characteristic.
The output compliance range can be set via external adjustment resistors and there is a choice of two
settings, in order to accommodate without hardware changes both component video/PC graphics
(700 mV) and composite video (1.3 V) outputs. An internal programmable clip/shift/multiply function on the
video data assures standards-compliant video output ranges for either full 10-bit or reduced ITU-R.BT601
style video input. In order to avoid nonlinearities after scaling of the video range, the DACs are internally
of 11-bit resolution. Furthermore, a bi- or tri-level sync with programmable amplitude (in order to support
both 700/300-mV and 714/286-mV video/sync ratios) can be inserted either on the green/luma channel
only or on all three output channels. This sync insertion is generated from additional current sources in the
DACs such that the full DAC resolution remains available for the video range. This preserves 100% of the
DAC’s 11-bit dynamic range for video data.
THS8200 optionally supports the pass-through of ancillary data embedded in the input video stream or
can insert ancillary data into the 525P analog component output according to the CGMS data
specification.
2.2 Ordering Information
T_A
–40°C to 85°C
PACKAGE
PFP
ORDERABLE PART NUMBER
THS8200IPFPEP
TOP-SIDE MARKING
THS8200IEP
10
Overview
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