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Video Filter Drivers
Audio Line Drivers

TPF142 - One CVBS and One Full-HD Composite Video Filter Driver

Features

 1-SDTV Video Filter Support CVBS

 1-HDTV Video Filter SupportY'Pb'Pr'-1080p, R'G'B' or VGA/SVGA/XGA

 Optimized 6th-order Butterworth Video reconstruction filter:
      —  CVBS Channel: -3dB at 9MHz

      —   HD Channel: -3dB ≥ 72MHz

 Support Multiple Input Biasing:

      — Provide 80-mV Level-Shift when DC-Coupled

      — Transparent Input Clamping when AC-Coupled

      — Support External DC Biasing when AC-Coupled

 Very Low Quiescent Current: 14.5 mA(at 3.3V, Typical)

  6dB Gain(2V/V), Rail TORail Output

 AC- or DC-Coupled Output Driving Dual Video Loads (75Ω)

 Wide Power Supply: +3.0V to +5.5V Single Supply

 Robust ESDProtection:

      —  Robust 8kV – HBM and 2kV – CDM ESD Rating

 Green Product, MSOP-8 and TSSOP-14 Package

Typical Application





Description

TPF142 is a specially designed for consumer applications, high-performance, low-costvideo reconstruction filter, it combine excellent video performance and low power consumption perfectly. It incorporates one standard-definition (CVBS) andone high-definition (HD) filter channels. All filters feature sixth-orderButterworth characteristics that are useful as digital-to-analog converter(DAC) reconstruction filters or as analog-to-digital converter (ADC)anti-aliasing filters. The HD filters can be bypassed to support filters. The HD filters can be bypassed to support 1080p60 video or up to quad extendedgraphics array (QXGA) RGB video.


As part of the TP142 flexibility, the input can be configured for ac- or dc-coupledinputs. The 84-mV output level shift allows for a full sync dynamic range atthe output with 0-V input. The ac-coupled modes include a transparent sync-tipclamp option for composite video (CVBS), Y', and G'B'R' signals. AC- coupledbiasing for C'/P'B/P'R channels can easily be achieved by adding an externalresistor to VS+.


The TP142 rail-to-rail output stage with 6-dB gain allows for both ac and dc linedriving. The ability to drive two lines, or 75-Ω loads, allows for maximumflexibility as a video line driver. The 14.5-mA total quiescent current at 3.3V makes it an excellent choice for power-sensitive video applications.


TPF142 is available in MSOP-8 package(TPF142-VR) and TSSOP-14 package (TPF142-TR).Its operation temperature range is from −40°C to +85°C.

Applications

 Video Signal Amplification

 Set-Top Box Video Driver

 PVR、DVD Player Video Buffer

 Video Buffer for Portable or USB-Powered Video Devices

 HDTV


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