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1FEATURES
23• Four SDTV Video Amplifiers for CVBS,
S-Video, Y'P'BP'R 480i/576i, Y'U'V', G'B'R'
(R'G'B'), or SCART
• Integrated Low-Pass Filters:
– Sixth-Order 9.5-MHz (–3dB) Butterworth
– –0.1-dB Bandwidth at 6 MHz
– –1-dB Passband Bandwidth at 8 MHz
– 54-dB Attenuation at 27 MHz
• Versatile Input Biasing
– DC-Coupled with 320-mV Output Shift
– AC-Coupled with Sync-Tip Clamp
– AC-Coupled with Biasing Allowed
• Built-in 5.6-V/V Gain (14.95 dB)
• +3-V to +5-V Single-Supply Operation
• Rail-to-Rail Output:
– Output Swings Within 100 mV from the
Rails to Allow AC or DC Output Coupling
– Supports Driving Two Lines per Channel
• Low 9.8-mA at 3.3-V Total Quiescent Current
• Low Differential Gain/Phase of 0.2%/0.35°
• Lead-Free and Green TSSOP-14 Package
APPLICATIONS
• Set Top Box Output Video Buffering
• Portable Media Player Video Buffering
• Security/Surveillance Systems
• DaVinci/OMAP/DMxxx Video Buffering
DESCRIPTION
Fabricated using the revolutionary complementary
Silicon-Germanium (SiGe) BiCom3X process, the
THS7375 is a low-power, single-supply, 3 V to 5 V
four-channel integrated video buffer. It incorporates a
sixth-order Butterworth filter (able to be bypassed)
that is useful as a digital-to-analog converter (DAC)
reconstruction filter or an analog-to-digital converter
(ADC) anti-aliasing filter. The 9.5-MHz filter is a
perfect choice for SDTV video that includes composite (CVBS), S-video, Y'U'V', G'B'R' (R'G'B'),
Y'P'BP'R 480i/576i, and SCART systems.
As part of the THS7375 flexibility, the input can be
configured for either ac or dc-coupled inputs. The
320-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
sync. AC-coupled biasing for C'/P'B/P'R channels can
easily be achieved by adding an external resistor to
VS+.
The THS7375 is the perfect choice for all video buffer
applications. Its rail-to-rail output stage with 5.6-V/V
gain allows for both ac and dc line driving. This
architecture makes the THS7375 an ideal choice for
DaVinci™ processors. The ability to drive two lines
per channel, or 75-Ω loads, allows for maximum
flexibility as a video line driver. The 9.8-mA total
quiescent current at 3.3 V and 0.1-mA disabled
current makes it an excellent choice for
USB-powered, portable, or other power-sensitive
applications.
The THS7375 is available in a TSSOP-14 package
that is lead-free and green (RoHS) compliant.
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