参数资料
型号: LT1251CS
厂商: Linear Technology
文件页数: 5/24页
文件大小: 0K
描述: IC AMP VIDEO FADE CONTRLD 14SOIC
标准包装: 55
应用: 电流反馈
电路数: 1
-3db带宽: 40MHz
转换速率: 300 V/µs
电流 - 电源: 14.5mA
电流 - 输出 / 通道: 40mA
电压 - 电源,单路/双路(±): 5 V ~ 30 V,±2.5 V ~ 15 V
安装类型: 表面贴装
封装/外壳: 14-SOIC(0.154",3.90mm 宽)
供应商设备封装: 14-SOIC
包装: 管件
13
LT1251/LT1256
APPLICATIONS INFORMATION
WU
U
In low gain applications, R1 and R2 are small compared to
the feedback resistors and therefore we can simplify the
equation to:
V
KV
RR
KV
RR
sR C
R
K
R
K
R
O
GF
OL
F
=
()( )
+
()
()( )
+
++
()
1
11
2
22
12
1
Note that the denominator causes a gain error due to the
open-loop gain (typically 0.1% for frequencies below
20kHz) and for mismatches in RF1 and RF2. A 1% mis-
match in the feedback resistors results in a 0.25% error at
K = 0.5.
If we set RF1 = RF2 and assume ROL >> RF1 (a 0.1% error
at low frequencies) the above equation simplifies to:
and
VKV A
K V A
where A
R
A
R
OV
V
F
G
V
F
G
=+
()
=+
11
2
1
2
1
11
This shows that the output fades linearly from input 2,
times its gain, to input 1, times its gain, as K goes from
0 to 1.
If only one input is used (for example, V1) and Pin 14 is
grounded, then the gain is proportional to K.
V
KA
O
V
1
=
Similarly for the inverting case where the noninverting
inputs are grounded and the input voltages V1 and V2 drive
the normally grounded ends of RG1 and RG2, we get:
General Equation for the Inverting Amplifier Case
V
KV
RR
R
KV
RR
R
sR C
R
K
RR
R
K
RR
R
O
G
F
G
F
OL
F
G
F
G
=
++
+
()
++
+
++
+
()
++
1
11
1
2
22
2
11
1
22
2
1
Note that the denominator is the same as the noninverting
case. In low gain applications, R1 and R2 are small
compared to the feedback resistors and therefore we can
simplify the equation to:
V
KV
R
KV
R
sR C
R
K
R
K
R
O
GG
OL
F
=
+
()
+
++
()
1
2
12
1
Again, if we set RF1 = RF2 and assume ROL >> RF1 (a 0.1%
error at low frequencies) the above equation simplifies to:
and
VKV A
K V A
where A
R
A
R
OV
V
F
G
V
F
G
=
+
()
[]
==
11
2
1
2
1
The 4-resistor difference amplifier yields the same result
as the inverting amplifier case, and the common mode
rejection is independent of K.
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LT1251CS#PBF 功能描述:IC AMP VIDEO FADE CONTRLD 14SOIC 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)
LT1251CS#TR 功能描述:IC AMP VIDEO FADE 40MHZ 14SOIC 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)
LT1251CS#TRPBF 功能描述:IC AMP VIDEO FADE CONTRLD 14SOIC 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)
LT1252 制造商:LINER 制造商全称:Linear Technology 功能描述:Low Cost Video Amplifier
LT1252CN8 功能描述:IC AMP VIDEO LOW COST SNGL 8-DIP 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)