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Video Filter Drivers
Audio Line Drivers

TPF134A - 4-Channel Video Amplifiers with 1-SD and 3-HD 6th-order Filters

Features

 1-SDTV Video Filter Support CVBS

 3-HDTV Video Filter SupportY'Pb'Pr'-1080i/720p, R'G'B'or VGA/SVGA/XGA

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

      HD Channel: -3dB ≥ 36MHz

 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: 31.5 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-10-EP,TSSOP-14 Package

Typical Application





Description

TPF134A is a specially designed for consumer applications,high-performance, low-cost video reconstruction filter, it combine excellentvideo performance and low power consumption perfectly. It incorporates onestandard-definition (CVBS) and three high-definition (HD) filter channels. Allfilters feature sixth-order Butterworth characteristics that are useful asdigital-to-analog converter (DAC) reconstruction filters or asanalog-to-digital converter (ADC) anti-aliasing filters. The HD filters can bebypassed to support filters. The HD filters can be bypassed to support 1080p60video or up to quad extended graphics array (QXGA) RGB video.


As part of the TP134A flexibility, the input can be configured for ac- ordc-coupled inputs. The 84-mV output level shift allows for a full sync dynamicrange at the output with 0-V input. The ac-coupled modes include a transparentsync-tip clamp option for composite video (CVBS), Y', and G'B'R' signals. AC-coupled biasing for C'/P'B/P'R channels can easily be achieved by adding anexternal resistor to VS+.


The TP134A rail-to-rail output stage with 6-dB gain allows for both ac anddc line driving. The ability to drive two lines, or 75-Ω loads, allows formaximum flexibility as a video line driver. The 31.5-mA total quiescent currentat 3.3 V makes it an excellent choice for power-sensitive video applications.


TPF134A isavailable in MSOP-10 package (TPF134A-V) and TSSOP-14 package (TPF134A-T). 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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