Fabricated using the revolutionary, complementary Silicon-Germanium (SiGe) BiCom3X
process, the THS7373 is a low-power, single-supply, 3-V to 5-V, four-channel integrated video
buffer. It incorporates one standard-definition (CVBS) and three high-definition (HD) filter
channels. All filters feature sixth-order Butterworth characteristics that are useful as
digital-to-analog converter (DAC) reconstruction filters or as analog-to-digital converter (ADC)
anti-aliasing filters. The HD filters can be bypassed to support 1080p60 video or up to quad
extended graphics array (QXGA) RGB video.
As part of the THS7373 flexibility, the input can be configured for ac- or dc-coupled
inputs. The 300-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 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 an external resistor to VS+.
The THS7373 rail-to-rail output stage with 6-dB gain allows for both ac and dc line
driving. The ability to drive two lines, or 75-Ω loads, allows for maximum flexibility as a video line driver. The 16.2-mA total quiescent current at 3.3 V and 0.1 µA (disabled mode) makes it an excellent choice for power-sensitive video applications.
The THS7373 is available in a small TSSOP-14 package that is lead-free and green (RoHS-compliant).
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