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THS7353 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. THS7353
Description  3-Channel Low Power Video Buffer with I2C Control, Selectable Filters, External Gain Control, 2:1 Input MUX, and Selectable Input Modes
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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THS7353 Datasheet(HTML) 1 Page - Texas Instruments

 
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FEATURES
APPLICATIONS
DESCRIPTION
In A
ADC /
Video
Decoder
3.3 V
3.3 V
LPF
AC
Sync
TIP
Clamp
DC
+
-
X1
DC +
250 mV
MUTE
Bypass
2:1
1 kW
250 W
AC
-
BIAS
In B
Input B
Input A
I2C-
SDA
I2C-
SCL
9 / 16 /
35 MHz
Out
Gain
Adjust
0.1 F
m
0.1 F
m
0.1 F
m
75 W
75 W
1 of 3 Channels
THS7353
SLOS484 – NOVEMBER 2005
3-Channel Low Power Video Buffer with I2C Control, Selectable Filters, External Gain
Control, 2:1 Input MUX, and Selectable Input Modes
HDTV Video Buffering
3-Video Buffers for CVBS, S-Video, SD/ED/HD
Y'P'BP'R, and G'B'R' (R'G'B') Video
PVR/DVDR Video Buffering
I2C™ Control of All Functions
Projector Video Buffering
Integrated Low-Pass Filters
USB/Portable Low Power Video Buffering
– 5th Order Butterworth Characteristics
– Selectable Corner Frequencies of 9-MHz,
16-MHz, 35-MHz, and Bypass (150-MHz)
Fabricated
using
the
new
complimentary
silicon-germanium (SiGe) BiCom-III process, the
Selectable Input Bias Modes
THS7353 is a low-power, single-supply 2.7-V to 5-V,
– AC-Coupled with Sync-Tip Clamp
3-channel integrated video buffer. It incorporates a
– AC-Coupled with Bias
selectable 5th order Butterworth anti-aliasing / DAC
reconstruction
filter
to
eliminate
data
converter
– DC-Coupled with 250-mV Input Shift
images. The 9-MHz is a perfect choice for SDTV
– DC-Coupled
video including composite, S-Video™, and 480i/576i
2:1 Input MUX Allows Multiple Input Sources
Y'P'BP'R or G'B'R' (R'G'B') video. The 16-MHz filter is
ideal for EDTV 480p/576p Y'P'BP'R, G'B'R', and VGA
External Gain Control Range From
signals. The 35-MHz filter is useful for HDTV
0 dB to 14 dB
720p/1080i Y'P'BP'R, G'B'R', and SVGA/XGA signals.
2.7-V to 5-V Single Supply Operation
For 1080p or SXGA/UXGA signals, the filter can be
Low 16.2-mA (3.3 V) Total Quiscent Current
bypassed allowing a 150-MHz bandwidth, 300-V/
µs
amplifier to buffer the signal.
Disable (< 1
µA) and Mute Control Functions
Rail-to-Rail Output:
Each channel of the THS7353 is individually I2C
configurable for all functions which makes it flexible
– Allows AC or DC Output Coupling
for any application. Its rail-to-rail output stage allows
Low Differential Gain/Phase of 0.15%/0.3
°
for both ac and dc coupling applications. The
externally controlled gain adjust pin allows for fine
tuning of the gain such as line driving, compensating
for cable losses, or Sin-X/X compensation.
Figure 1. 3.3 V Single-Supply AC-Input/AC-Video Output System w/SAG Correction
(1 of 3 Channels Shown)
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.
I2C is a trademark of Philips Electronics.
S-Video is a trademark of of its respective owner.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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