參數(shù)資料
型號(hào)： THS7368IPWR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 6 CHANNEL, VIDEO AMPLIFIER, PDSO20
封裝： GREEN, TSSOP-20
文件頁(yè)數(shù)： 13/40頁(yè)
文件大?。?/td> 1123K
代理商： THS7368IPWR
+V
S
External
Input/Output
Pin
Internal
Circuitry
SBOS497 – DECEMBER 2009
www.ti.com
APPLICATION INFORMATION
of thin film resistors and high-quality, low-temperature
The THS7368 is targeted for six-channel video output
coefficient capacitors. The design of the THS7368
applications that require three standard-definition
allows
operation
down
to
2.6
V,
but
it
is
(SD) video output buffers and three selectable filter
recommended to use at least a 3-V supply to ensure
(SF) output buffers. Although it can be used for
that no issues arise with headroom or clipping with
numerous
other
applications,
the
needs
and
100% color-saturated CVBS signals. If only 75% color
requirements of the video signal are the most
saturated CVBS is supported, then the output voltage
important design parameters of the THS7368. Built
requirements are reduced to 2 VPP on the output,
on
the
revolutionary,
complementary
Silicon
allowing a 2.7-V supply to be utilized without issues.
Germanium (SiGe) BiCom3X process, the THS7368
incorporates many features not typically found in
A 0.1-
μF to 0.01-μF capacitor should be placed as
integrated video parts while consuming very low
close as possible to the power-supply pins. Failure to
power. The THS7368 includes the following features:
do so may result in the THS7368 outputs ringing or
oscillating. Additionally, a large capacitor (such as
Single-supply 2.7-V to 5-V operation with low total
22
μF to 100 μF) should be placed on the
quiescent current of 23.4 mA at 3.3 V and 24.5
power-supply
line
to
minimize
interference
with
mA at 5 V
50-/60-Hz line frequencies.
Disable mode allows for shutting down individual
SD/SF blocks of amplifiers to save system power
INPUT VOLTAGE
in power-sensitive applications
The THS7368 input range allows for an input signal
Input configuration accepting dc + level shift, ac
range from –0.2 V to approximately (VS+ – 1.5 V).
sync-tip clamp, or ac-bias
However, because of the internal fixed gain of 2 V/V
–
AC-biasing is allowed with the use of external
(+6 dB) and the internal input level shift of 150 mV
pull-up resistors to the positive power supply
(typical), the output is generally the limiting factor for
Sixth-order, low-pass filter for DAC reconstruction
the allowable linear input range. For example, with a
or ADC image rejection:
5-V supply, the linear input range is from –0.2 V to
–
9.5 MHz for NTSC, PAL, SECAM, composite
3.5 V. However, because of the gain and level shift,
video
(CVBS),
S-Video
Y’/C’,
480i/576i,
the linear output range limits the allowable linear
Y’/P’B/P’R, and G’B’R’ (R’G’B’) signals
input range to approximately –0.1 V to 2.3 V.
–
Selectable
9.5-MHz/18-MHz/36-MHz/72-MHz
for
480i/576i,
480p/576p,
INPUT OVERVOLTAGE PROTECTION
720p/1080i/1080p24/1080p30,
or
1080p60
The THS7368 is built using a very high-speed,
Y’/P’ B/P’R or G’B’R’ signals; also allows up to
complementary, bipolar, and CMOS process. The
QXGA (1600 × 1200 at 60 Hz) R'G'B' video
internal junction breakdown voltages are relatively
Individually-controlled Bypass mode bypasses the
low for these very small geometry devices. These
low-pass filters for each SD/SF block of amplifiers
breakdowns are reflected in the Absolute Maximum
–
SD bypass mode features 150-MHz and
Ratings table. All input and output device pins are
125-V/
μs performance
protected with internal ESD protection diodes to the
–
SF
bypass
mode
features
375-MHz
and
power supplies, as shown in Figure 36.
600-V/
μs performance
Individually-controlled Disable mode shuts down
all amplifiers in each SD/SF block to reduce
quiescent current to 0.1
μA
Internally-fixed gain of 2-V/V (+6-dB) buffer that
can drive two video lines with dc-coupling or
traditional ac-coupling
Flow-through configuration using a TSSOP-20
package that complies with the latest lead-free
(RoHS-compatible)
and
green
manufacturing
requirements
Figure 36. Internal ESD Protection
OPERATING VOLTAGE
These diodes provide moderate protection to input
The THS7368 is designed to operate from 2.7 V to
overdrive voltages above and below the supplies as
5 V over a –40°C to +85°C temperature range. The
well. The protection diodes can typically support
impact on performance over the entire temperature
30 mA of continuous current when overdriven.
range is negligible as a result of the implementation
20
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): THS7368
相關(guān)PDF資料
PDF描述
THS7368IPW 6 CHANNEL, VIDEO AMPLIFIER, PDSO20
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THS7372IPW 4 CHANNEL, VIDEO AMPLIFIER, PDSO14
THS7374IPWR 4 CHANNEL, VIDEO AMPLIFIER, PDSO14
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THS7372IPWR 功能描述:視頻放大器 4CH VIDEO AMP RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel
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