Fabricated using the Silicon-Germanium (SiGe) BiCom-III process, the THS7314 is a low power single-supply 3-V to 5-V 3-channel integrated video buffer. It incorporates a 5th-order Butterworth filter which is useful as a DAC reconstruction filter or an ADC anti-aliasing filter. The 8.5-MHz filter is a perfect choice for SDTV video which includes Composite (CVBS), S-Video, Y"U"V", G"B"R" (R"G"B"), and Y"P"BP"R 480i/576i.
●As part of the THS7314 flexibility, the input can be configured for ac or dc coupled inputs. The 285-mV output level shift to allow 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 sync. AC-coupled biasing for C"/P"B/P"R channels is achieved by adding an external resistor to Vs+.
●The THS7314 is the perfect choice for all output buffer applications. Its rail-to-rail output stage with 6-dB gain allows for both ac and dc line driving. The ability to drive 2-lines, or 75-Ω loads, allows for maximum flexibility as a video line driver. The 16-mA total quiescent current at 3.3-V makes it an excellent choice for USB powered, portable, or other power sensitive video applications.
●The THS7314 is available in a small SOIC-8 package that is RoHS compliant.
● 3 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
● 47dB Attenuation at 27-MHz
● Versatile Input Biasing
● DC-Coupled With 285-mV Output Shift
● AC-Coupled with Sync-Tip Clamp
● Allows AC-Coupled With DC-Biasing
● Built-in 6dB Gain (2V/V)
● 3-V to 5-V Single Supply Operation
● Rail-to-Rail Output:
● Output Swings Within 100-mV From the Rails Allowing AC or DC Output Coupling
● Able to Drive up to 2 Video Lines – 75 Ω
● Low 16-mA at 3.3-V Total Quiscent Current
● Low Differential Gain/Phase of 0.1% / 0.1°
● SOIC-8 Package
● APPLICATIONS
● Set Top Box Output Video Buffering
● PVR/DVDR Output Buffering
● USB/Portable Low Power Video Buffering
