参数资料
| 型号： | LT1227CS8 |
| 厂商： | Linear Technology |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO CURRNT FEEDBK AMP 8SOIC |
| 标准包装： | 100 |
| 应用： | 电流反馈 |
| 电路数： | 1 |
| -3db带宽： | 140MHz |
| 转换速率： | 1100 V/µs |
| 电流 - 电源： | 10mA |
| 电流 - 输出 / 通道： | 60mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 30 V，±2 V ~ 15 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： | 管件 |
7
LT1227
W
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SPLII
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A
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TIC
U
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A
O
PPLICATI
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U
I FOR ATIO
The LT1227 is a very fast current feedback amplifier.
Because it is a current feedback amplifier, the bandwidth
is maintained over a wide range of voltage gains. The
amplifier is designed to drive low impedance loads such as
cables with excellent linearity at high frequencies.
Feedback Resistor Selection
The small-signal bandwidth of the LT1227 is set by the
external feedback resistors and the internal junction ca-
pacitors. As a result, the bandwidth is a function of the
supply voltage, the value of the feedback resistor, the
closed-loop gain and load resistor. The characteristic
curves of Bandwidth vs Supply Voltage show the effect of
a heavy load (100
) and a light load (1k). These curves
use a solid line when the response has less than 0.5dB of
peaking and a dashed line when the response has 0.5dB to
5dB of peaking. The curves stop where the response has
more than 5dB of peaking.
At a gain of two, on
±15V supplies with a 1k feedback
resistor, the bandwidth into a light load is over 140MHz,
but into a heavy load the bandwidth reduces to 120MHz.
The loading has this effect because there is a mild reso-
nance in the output stage that enhances the bandwidth at
light loads but has its Q reduced by the heavy load. This
enhancement is only useful at low gain settlings; at a gain
of ten it does not boost the bandwidth. At unity gain, the
enhancement is so effective the value of the feedback
resistor has very little effect. At very high closed-loop
gains, the bandwidth is limited by the gain bandwidth
product of about 1GHz. The curves show that the band-
width at a closed-loop gain of 100 is 12MHz, only one tenth
what it is at a gain of two.
NULL
6 VOUT
4 V
–
7
V +
2
–IN
+IN 3
CURRENT
SOURCE
BIAS
8
S/D
14k
1
5
1227 SS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1227CS8#PBF | 功能描述:IC VIDEO CURRNT FEEDBK AMP 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:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:TFT-LCD 面板：VCOM 驱动器 输出类型:满摆幅 电路数:1 -3db带宽:35MHz 转换速率:40 V/µs 电流 - 电源:3.7mA 电流 - 输出 / 通道:1.3A 电压 - 电源，单路/双路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-uMax-EP 包装:管件 |
| LT1227CS8#TR | 功能描述:IC AMP VID DIFF CURR FDBK 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) |
| LT1227CS8#TRPBF | 功能描述:IC VIDEO CURRNT FEEDBK AMP 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) |
| LT1227CS8PBF | 制造商:Linear Technology 功能描述:Video Amp 140MHz Current Feedback SOIC8 |
| LT1227M | 制造商:LINER 制造商全称:Linear Technology 功能描述:140MHz Video Current Feedback Amplifier |
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