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參數資料
| 型號： | THS3122CDDAG3 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, SOP-8 |
| 文件頁數： | 4/34頁 |
| 文件大小： | 1276K |
| 代理商： | THS3122CDDAG3 |
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470 W
+15V
-15V
75 W
V
I
n lines
75-
TransmissionLine
W
V
O(n)
V
O(1)
THS3125
R
F
470 W
49.9 W
R
49.9 W
T
R
G
470 W
50-
Load
W
50-
Source
W
V
I
+V
S
+V
S/2
+V
S/2
THS3125
R
F
470 W
49.9 W
50-
Load
W
+V
S
+V
S/2
56.2
R
W
T
R
G
470 W
50-
Source
W
V
I
+V
S/2
60
50
40
30
20
10
0
RecommendedR
Resistance(
)
W
ISO
10
100
C
CapacitiveLoad(pF)
-
L
SLOS382D
– SEPTEMBER 2001 – REVISED FEBRUARY 2011
Single-Supply Operation
The THS3125 and THS3122 have the capability to
operate from a single supply voltage ranging from 10
V to 30 V. When operating from a single power
supply, biasing the input and output at mid-supply
allows for the maximum output voltage swing. The
circuits in Figure 39 show inverting and noninverting
amplifiers configured for single-supply operation.
Figure 40. Video Distribution Amplifier
Application
Driving Capacitive Loads
Applications such as FET drivers and line drivers can
be highly capacitive and cause stability problems for
high-speed amplifiers.
methods for driving capacitive loads. The basic idea
is to use a resistor or ferrite chip to isolate the phase
shift at high frequency caused by the capacitive load
from the amplifier feedback path. See Figure 41 for
recommended resistor values versus capacitive load.
Figure 39. DC-Coupled, Single-Supply Operation
Video Distribution
The wide bandwidth, high slew rate, and high output
drive current of the THS3125 and THS3122 match
the demands for video distribution to deliver video
signals down multiple cables. To ensure high signal
quality with minimal degradation of performance, a
0.1-dB gain flatness should be at least 7x the
passband
frequency
to
minimize
group
delay
Figure 41. Recommended RISO vs Capacitive
variations from the amplifier. A high slew rate
Load
minimizes distortion of the video signal, and supports
component video and RGB video signals that require
fast transition times and fast settling times for high
signal quality. Figure 40 illustrates a typical video
distribution amplifier application configuration.
12
2001–2011, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| THS3122CDDAR | 功能描述:高速運算放大器 Dual High Output Current 120-MHz RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS3122CDDARG3 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS3122CDG4 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS3122CDR | 功能描述:高速運算放大器 Dual High Output Current 120-MHz RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS3122CDRG4 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz RoHS:否 制造商:Texas Instruments 通道數量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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