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参数资料
| 型号： | LT1191CS8#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC OP-AMP VIDEO HISPD SNGL 8SOIC |
| 标准包装： | 2,500 |
| 应用： | 通用 |
| 电路数： | 1 |
| 转换速率： | 450 V/µs |
| 电流 - 电源： | 32mA |
| 电流 - 输出 / 通道： | 50mA |
| 电压 - 电源，单路/双路(±)： | 4.75 V ~ 16 V，±2.38 V ~ 8 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
9
LT1191
FREQUENCY (Hz)
CLOSED-LOOP
VOLTAGE
GAIN
(dB)
10
LT1191 TA08
100M
10M
1M
100k
AV = 1
R
= 1k
R = 1k
AV = 2
RFB = 1k
RG = 330
5
0
–5
–10
RFB = 300
RG = 300
VS = ±5V
TA = 25°C
FB
G
CABLE
2
+
–
5V
7
LT1191
–5V
4
3
6
R
75
75
G
RFB
Cable Driver Voltage Gain vs Frequency
Double Terminated Cable Driver
Cable Terminations
The LT1191 operational amplifier has been optimized as a
low cost video cable driver. The
±50mAguaranteedoutput
current enables the LT1191 to easily deliver 7.5VP-P into
100
, while operating on ±5V supplies or 2.6VP-P on a
single 5V supply.
When driving a cable it is important to terminate the cable
to avoid unwanted reflections. This can be done in one of
two ways: single termination or double termination. With
single termination, the cable must be terminated at the
receiving end (75
to ground) to absorb unwanted en-
ergy. The best performance can be obtained by double
termination (75
in series with the output of the amplifier,
and 75
to ground at the other end of the cable). This
termination is preferred because reflected energy is ab-
sorbed at each end of the cable. When using the double
termination technique it is important to note that the signal
is attenuated by a factor of 2, or 6dB. This can be compen-
sated for by taking a gain of 2, or 6dB in the amplifier. The
cable driver has a –3dB bandwidth of 100MHz while
driving the 150
load. Note the response can be improved
by lowering the impedance of the feedback elements.
Using the Shutdown Feature
The LT1191 has a unique feature that allows the amplifier
to be shut down for conserving power or for multiplexing
several amplifiers onto a common cable. The amplifier will
shut down by taking Pin 5 to V–. In shutdown, the amplifier
dissipates 15mW while maintaining a true high impedance
output state of 15k
in parallel with the feedback resis-
tors. The amplifiers must be used in a noninverting con-
figuration for MUX applications. In inverting configurations
the input signal is fed to the output through the feedback
components. The following scope photos show that with
very high RL, the output is truly high impedance; the
output slowly decays toward ground. Additionally, when
the output is loaded with as little as 1k
theamplifiershuts
off in 400ns. This shutoff can be under the control of HC
CMOS operating between 0V and –5V.
APPLICATIO S I FOR ATIO
WU
UU
Output Shutdown
LT1191 TA09
1MHz SINE WAVE GATED OFF WITH
SHUTDOWN PIN, AV = 1, RL =
∞
VOUT
–5V
0V
LT1191 TA10
1MHz SINE WAVE GATED OFF WITH
SHUTDOWN PIN, AV = 1, RL = 1k
VOUT
–5V
0V
VSHDN
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| LT1191MJ8/883 | 制造商:Linear Technology 功能描述:OP Amp Single GP 9V/18V 8-Pin CDIP |
| LT1192CN8 | 功能描述:IC OP-AMP VIDEO HI-SPD SNGL 8DIP RoHS:否 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
| LT1192CN8#PBF | 功能描述:IC OP-AMP VIDEO HI-SPD SNGL 8DIP RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
| LT1192CS8 | 功能描述:IC OP-AMP VIDEO HISPD SNGL 8SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
| LT1192CS8#PBF | 功能描述:IC OP-AMP VIDEO HISPD SNGL 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 标准包装:1,000 系列:- 应用:驱动器 输出类型:差分 电路数:3 -3db带宽:350MHz 转换速率:1000 V/µs 电流 - 电源:14.5mA 电流 - 输出 / 通道:60mA 电压 - 电源，单路/双路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安装类型:表面贴装 封装/外壳:20-VFQFN 裸露焊盘 供应商设备封装:20-QFN 裸露焊盘（4x4） 包装:带卷 (TR) |
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