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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 19/40頁 |
| 文件大小： | 1123K |
| 代理商： | THS7368IPWR |
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75 W
S-VideoY'1Out
CVBS1Out
CVBS
R
SOC/DAC/Encoder
S-Video Y’
R
S-Video C’
R
Y'/G'
R
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
SD1OUT
SD2OUT
SD3OUT
DisableSD
GND
DisableHD
SF1OUT
SF2OUT
SF3OUT
BypassSF
SD1IN
SD2IN
SD3IN
NC
V
S+
NC
SF1IN
SF2IN
SF3IN
BypassSD
THS7368
Bypass
SDLPF
Bypass
SFLPF
P' /B'
B
R
P' /R'
R
75 W
S-VideoC'1Out
75 W
Y'/G'1Out
75 W
P’ /B'1Out
B
75 W
P' /R'1Out
R
75 W
S-VideoY'1Out
CVBS1Out
75 W
S-VideoC'1Out
75 W
Y'/G'1Out
75 W
P' /B'1Out
B
75 W
P’ /R'1Out
R
75 W
+2.7Vto
+5V
DisableSF
DisableSD
SBOS497 – DECEMBER 2009
www.ti.com
(1) SF indicates selectable filter.
Figure 41. Typical Six-Channel System with DC-Coupled Line Driving and Two Outputs Per Channel
One concern of dc-coupling, however, arises if the
but power and thermal analysis should always be
line is terminated to ground. If the ac-bias input
examined in any system to ensure that no issues
configuration is used, the output of the THS7368 has
arise. Be sure to utilize RMS power and not
a dc bias on the output, such as 1.6 V. With two lines
instantaneous power when evaluating the thermal
terminated to ground, this configuration allows a dc
performance.
current path to flow, such as 1.6 V/75-
= 21.3 mA.
Note that the THS7368 can drive the line with
The result of this configuration is a slightly decreased
dc-coupling
regardless
of
the
input
mode
of
high output voltage swing and an increase in power
operation. The only requirement is to make sure the
dissipation of the THS7368. While the THS7368 was
video line has proper termination in series with the
designed to operate with a junction temperature of up
output (typically 75
). This requirement helps isolate
to +125°C, care must be taken to ensure that the
capacitive loading effects from the THS7368 output.
junction temperature does not exceed this level or
Failure to isolate capacitive loads may result in
else long-term reliability could suffer. Using a 5-V
instabilities with the output buffer, potentially causing
supply, this configuration can result in an additional
ringing
or
oscillations
to
appear.
The
stray
dc power dissipation of (5 V – 1.6 V) × 21.3 mA =
capacitance appearing directly at the THS7368 output
72.5 mW per channel. With a 3.3-V supply, this
pins should be kept below 20 pF for the fixed SD filter
dissipation reduces to 36.2 mW per channel. The
channels and below 15 pF for the selectable filter
overall low quiescent current of the THS7368 design
minimizes potential thermal issues even when using
the TSSOP package at high ambient temperatures,
26
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): THS7368
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS7371IPW | 制造商:Texas Instruments 功能描述:VIDEO OPAM - Rail/Tube |
| THS7371IPWR | 制造商:Texas Instruments 功能描述:VIDEO OPAM - Tape and Reel |
| THS7372 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-Channel Video Amplifier with One CVBS and Three Full-HD Filters with 6-dB Gain |
| THS7372IPW | 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 |
| 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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