1FEATURES
• 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

DESCRIPTION
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.