THS7372 Datasheet, PDF (1/49 Pages) Texas Instruments – 4-Channel Video Amplifier with One CVBS and Three Full-HD Filters with 6-dB Gain

THS7372
www.ti.com
SBOS578 – AUGUST 2011
4-Channel Video Amplifier with One CVBS and Three Full-HD Filters with 6-dB Gain
Check for Samples: THS7372
FEATURES
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•2345 One SDTV Video Amplifier for CVBS Video
• Three Fixed Full-HD 1080p60 Filters for
Y’/P’_B/P’_R, G’B’R’, or Computer RGB Outputs
• Sixth-Order Low-Pass Filters:
– SD Channel: –3 dB at 9.5 MHz
– Fixed Full-HD Channels: –3 dB at 72 MHz
• Versatile Input Biasing:
– DC-Coupled with 300-mV Output Shift
– AC-Coupled with Sync-Tip Clamp or Bias
• Built-in 6-dB Gain (2 V/V)
• +2.7-V to +5-V Single-Supply Operation
• Rail-to-Rail Output:
– Output Swings within 100 mV from the
Rails: Allows AC or DC Output Coupling
– Supports Driving Two Video Lines/Channel
• Low Total Quiescent Current: 23.4 mA at 3.3 V
• Disabled Supply Current Function: 0.1 μA
• Low Differential Gain/Phase: 0.2%/0.35°
• RoHS-Compliant TSSOP-14 Package
APPLICATIONS
• Set Top Box Output Video Buffering
• PVR/DVDR Output Buffering
• BluRay™ Output Video Buffering
DESCRIPTION
Fabricated using the revolutionary, complementary
Silicon-Germanium (SiGe) BiCom3X process, the
THS7372 is a low-power, single-supply, 2.7-V to 5-V,
four-channel integrated video buffer. It incorporates
one SDTV filter and three fixed Full-HD (also known
as True-HD) HDTV filters. 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 THS7372 has flexible input coupling capabilities,
and can be configured for either 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.
AC-coupled modes include a transparent sync-tip
clamp for CVBS, Y', and G'B'R' signals. AC-coupled
biasing for P'_B/P'_R channels can easily be achieved
by adding an external resistor to V_S+.
The THS7372 is an ideal choice for a wide range of
video buffer applications. Its 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
23.4-mA total quiescent current at 3.3 V and 0.1 μA
(disabled mode) makes it well-suited for systems that
must meet power-sensitive Energy Star^® standards.
The THS7372 is available in a TSSOP-14 package
that is lead-free and green (RoHS-compliant).
CVBS
Y'/G'
P’_B/B'
P’_R/R'
37.4 W
+2.7 V to
+5 V
37.4 W
37.4 W
37.4 W
THS7372
1 CVBS IN
2 NC
3 ^VS+
4 NC
5 FHD1 IN
6 FHD2 IN
7 FHD3 IN
CVBS OUT 14
DIS CVBS 13
GND 12
DIS FHD 11
FHD1 OUT 10
FHD2 OUT 9
FHD3 OUT 8
Disable
CVBS
CVBS Out
75 W
Disable
FHD
Y'/G' Out
75 W
P'_B/B' Out
75 W
P'_R/R' Out
75 W
Single-Supply, DC-Input/DC-Output Coupled Video Line Driver
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
BluRay is a trademark of Blu-ray Disc Association (BDA).
2
Energy Star is a registered trademark of Energy Star.
3
Macrovision is a registered trademark of Macrovision Corporation.
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All other trademarks are the property of their respective owners.
5
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated