TI THS7315DR

Fabricated using the revolutionary complementary silicon-sermanium (SiGe) BiCom3 process, the THS7315 is a low-power, single-supply, 3-V to 5-V 3-channel integrated video buffer. It incorporates a 5th-order Butterworth filter that is useful as a digital-to-analog converter (DAC) reconstruction filter or an analog-to-digital converter (ADC) anti-aliasing filter. The 8.5-MHz filter is a perfect choice for SDTV video, including Composite Video Baseband Signals (CVBS), S-Video, Y’U’V’, G’B’R’ (R’G’B’), and Y’P’BP’R 480i/576i. The THS7315 inputs can be either ac- or dc-coupled. The 230 mV output level shift allows for a full sync dynamic range at the output with 0 V input. The ac-coupled modes include a transparent sync-tip clamp option for CVBS, Y', and G'B'R' signals with bottom-level sync. AC-coupled biasing for C'/PB'/PR' channels can easily be achieved by adding an external resistor to VS+. The THS7315 is the perfect choice for all output buffer applications. Its rail-to-rail output stage with 5.2-V/V gain allows for both ac and dc line driving, making it a perfect choice for DaVinci processors. The ability for each channel to drive two video lines, or 75-Ω loading, allows for maximum flexibility as a video line driver. The 15.6-mA quiescent current at 3.3 V also makes it an excellent choice for USB-powered, portable, or other power-sensitive video applications. The THS7315 is available in a small SOIC-8 package that is lead-free and compliant with green requirements.

• Three SDTV Video Amplifiers for CVBS, S-Video, Y'P'BP'R 480i/576i, Y'U'V', or G'B'R' (R'G'B')
• Integrated Low-Pass Filters: 5th-Order, 8.5-MHz (–3dB) Butterworth
• –1dB Passband Bandwidth at 7 MHz
• 47 dB Attenuation at 27 MHz
• Versatile Input Biasing:
  • DC-Coupled with 230-mV Output Shift
  • AC-Coupled with Sync-Tip Clamp
  • Allows AC-Coupled With DC-Biasing
• Built-in 5.2 V/V Gain (14.3 dB)
• +3-8 to ±5-V Single Supply Operation
• Rail-to-Rail Output: Output Swings Within 100 mV of the Rails, Allowing AC- or DC-Output Coupling
• Supports Driving Two Lines per Channel
• Low Total Quiescent Current: 15.6 mA at 3.3 V
• Low Differential Gain/Phase of 0.2%/0.3°
• Lead-free, Green SOIC-8 Package

• Set Top Box Output Video Buffering
• PVR/DVDR Output Buffering
• USB/Portable Low-Power Video Buffering