参数资料
| 型号： | LT1227CS8 |
| 厂商： | Linear Technology |
| 文件页数： | 12/12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 |
9
LT1227
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
VOUT
AI04
Settling Time
The characteristic curves show that the LT1227 amplifier
settles to within 10mV of final value in 40ns to 55ns for any
output step up to 10V. The curve of settling to 1mV of final
value shows that there is a slower thermal contribution up
to 20
s. The thermal settling component comes from the
output and the input stage. The output contributes just
under 1mV per volt of output change and the input
contributes 300
V per volt of input change. Fortunately
the input thermal tends to cancel the output thermal. For
this reason the noninverting gain of two configuration
settles faster than the inverting gain of one.
Large-Signal Transient Response, AV = –2
VOUT
AI04
Large-Signal Transient Response, AV = +2
Shutdown
The LT1227 has a high impedance, low supply current
mode which is controlled by Pin 8. In the shutdown mode,
the output looks like a 12pF capacitor and the supply
current drops to approximately the Pin 8 current. The
shutdown pin is referenced to the positive supply through
an internal pullup circuit (see the simplified schematic).
Pulling a current of greater than 50
A from Pin 8 will put
the device into the shutdown mode. An easy way to force
shutdown is to ground Pin 8, using open drain (collector)
logic. Because the pin is referenced to the positive supply,
the logic used should have a breakdown voltage of greater
than the positive supply voltage. No other circuitry is
necessary as an internal JFET limits the Pin 8 current to
about 100
A. When Pin 8 is open, the LT1227 operates
normally.
Differential Input Signal Swing
The differential input swing is limited to about
±6V by an
ESD protection device connected between the inputs. In
normal operation, the differential voltage between the
input pins is small, so this clamp has no effect; however,
in the shutdown mode, the differential swing can be the
same as the input swing. The clamp voltage will then set
the maximum allowable input voltage. To allow for some
margin, it is recommended that the input signal be less
than
±5V when the device is shutdown.
Offset Adjust
Pins 1 and 5 are provided for offset nulling. A small current
to V+ or ground will compensate for DC offsets in the
device. The pins are referenced to the positive supply (see
the simplified schematic) and should be left open if un-
used. The offset adjust pins act primarily on the inverting
input bias current. A 10k pot connected to Pins 1 and 5
with the wiper connected to V
+ will null out the bias
current, but will not affect the offset voltage much. Since
the output offset is
VO AV VOS + (IIN–) RF
at higher gains (AV > 5), the VOS term will dominate. To null
out the VOS term, use a 10k pot between Pins 1 and 5 with
a 150k resistor from the wiper to ground for 15V split
supplies, 47k for 5V split supplies.
AI03
RF = 1k, RG= 1k, RL = 400
RF = 1k, RG= 510, RL = 400
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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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