THS7365 Datasheet, PDF (1/53 Pages) Texas Instruments – 6-Channel Video Amplifier with 3-SD and 3-HD Sixth-Order Filters and 6-dB Gain

THS7365
THS7365
www.ti.com.................................................................................................................................................................................................. SBOS467 – MARCH 2009
6-Channel Video Amplifier with 3-SD and 3-HD Sixth-Order Filters and 6-dB Gain
FEATURES
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•234 Three SDTV Video Amplifiers for CVBS,
S-Video, Y’/P’_B/P’_R, 480i/576i, Y’U’V’, or R’G’B’
• Three HDTV Video Amplifiers for Y’/P’_B/P’_R,
720p/1080i/1080p30, or G’B’R’ (R’G’B’)
• Bypassable Sixth-Order Low-Pass Filters:
– SD Channels: –3 dB at 9.5-MHz
– HD Channels: –3 dB at 36-MHz
• Versatile Input Biasing:
– DC-Coupled with 300-mV Output Shift
– AC-Coupled with Sync-Tip Clamp
– AC-Coupling with Biasing
• 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: 20.7 mA at 3.3 V
• Disabled Supply Current Function: 0.1 µA
• Low Differential Gain/Phase: 0.2%/0.3°
• RoHS-Compliant Package: TSSOP-20
APPLICATIONS
• Set Top Box Output Video Buffering
• PVR/DVDR/BluRay™ Output Buffering
• Low-Power Video Buffering
DESCRIPTION
Fabricated using the revolutionary, complementary
Silicon-Germanium (SiGe) BiCom3X process, the
THS7365 is a low-power, single-supply, 2.7-V to 5-V,
six-channel integrated video buffer. It incorporates
three standard-definition (SDTV) and three
high-definition (HDTV) filter channels. All filters
feature bypassable sixth-order Butterworth filter
characteristics that are useful as digital-to-analog
converter (DAC) reconstruction filters or as
analog-to-digital converter (ADC) anti-aliasing filters.
The THS7365 has flexible input coupling capabilities
that 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. The
ac-coupled modes include a transparent sync-tip
clamp for composite video (CVBS), Y', and R'G'B'
signals with sync. AC-coupled biasing for C'/P'_B/P'_R
channels can easily be achieved by adding an
external resistor to V_S+.
The THS7365 is an ideal choice for all 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 per channel, or 75-Ω loads, allows for
maximum flexibility as a video line driver. The
20.7-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 THS7365 is available in a TSSOP-20 package
that is lead-free and green (RoHS-compliant).
CVBS
S-Video
Y’
S-Video
C’
Y'/G'
P'_B/B'
P'_R/R'
THS7365
1 SD1 IN
SD1 OUT 20
R
2 SD2 IN
SD2 OUT 19
CVBS
75 W
S-Video Y' Out
75 W
75 W
3 SD3 IN
SD3 OUT 18
S-Video C' Out
R
4 NC
Disable SD 17
Disable SD
75 W
75 W
+2.7 V to
+5 V
5 V_S+
GND 16
75 W
6 NC
Disable HD 15
Disable HD
R
7 HD1 IN
HD1 OUT 14
Y'/G' Out
75 W
8 HD2 IN
HD2 OUT 13
R
9 HD3 IN
HD3 OUT 12
P'_B/B' Out
75 W
75 W
10 Bypass SD Bypass HD 11
P'_R/R' Out
R
75 W
75 W
Bypass
SD LPF
R
Bypass
HD LPF
75 W
Figure 1. 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).
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Macrovision is a registered trademark of Macrovision Corporation.
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All other trademarks are the property of their respective owners.
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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 © 2009, Texas Instruments Incorporated