Fabricated using the revolutionary complimentary silicon-germanium (SiGe) BiCom3 process, the THS7347 is a low-power, single-supply 2.7-V to 5-V 3-channel integrated video buffer with horizontal (H) and vertical (V) sync signal paths. It incorporates a 500-MHz bandwidth, 1200-V/μs unity-gain buffer ideal for driving analog-to-digital converters (ADCs) and video decoders. In parallel with the unity-gain buffer, a monitor pass-through path allows for passing the input signal on to other systems. This path has a 6-dB gain, 500-MHz bandwidth, 1300-V/μs slew rate, SAG correction capability, and high output impedance
while disabled.
FEATURES
• 3-Video Amplifiers for CVBS, S-Video, EDTV, HDTV Y"P" B P" R , G"B"R", and R"G"B" Video
• H/V Sync Paths with Adjustable Schmitt Trigger
• 2:1 Input Mux
• I2C Control of All Functions on Each Channel
• Unity-Gain Buffer Path for ADC Buffering:
– 500-MHz Bandwidth, 1200-V/μs Slew Rate
• Monitor Pass-Through Function:
– 500-MHz Bandwidth, 1300-V/μs Slew Rate
– 6-dB Gain with SAG Correction Capable
– High Output Impedance in Disable State
• Selectable Input Bias Modes:
– AC-Coupled with Sync-Tip Clamp
– AC-Coupled with Bias
– DC-Coupled with Offset Shift
– DC-Coupled
• +2.7-V to +5-V Single-Supply Operation
• Total Power Consumption: 265 mW at 3.3 V
• Disable Function Reduces Current to 0.1 μA
• Rail-to-Rail Output:
– Output Swings Within 0.1 V of the Rails, Allowing AC- or DC-Output Coupling
