參數(shù)資料
型號(hào)： THS7360IPWR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： VIDEO AMPLIFIER, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁(yè)數(shù)： 21/43頁(yè)
文件大小： 962K
代理商： THS7360IPWR
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
THS7360
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
SLOS674 – JUNE 2010
www.ti.com
(1) SF indicates selectable filter.
Figure 47. Typical Six-Channel System with DC-Coupled Line Driving and Two Outputs Per Channel
One concern of dc-coupling arises, however, 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 THS7360 has
arise.
Be
sure
to
use
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 THS7360 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 THS7360. While the THS7360 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 THS7360 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 that appears directly at the THS7360
72.5 mW per channel. With a 3.3-V supply, this
output pins should be kept below 20 pF for the fixed
dissipation reduces to 36.2 mW per channel. The
SD filter channels and below 15 pF for the selectable
overall low quiescent current of the THS7360 design
minimizes potential thermal issues even when using
the TSSOP package at high ambient temperatures,
28
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): THS7360
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS7364 制造商:TI 制造商全稱:Texas Instruments 功能描述:6-Channel Video Amplifier with 3 SD and 3 Full-HD Filters with 6-dB Gain
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