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參數(shù)資料
| 型號： | LT1256CS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | 40MHz Video Fader and DC Gain Controlled Amplifier |
| 中文描述： | OP-AMP, 3000 uV OFFSET-MAX, 40 MHz BAND WIDTH, PDSO14 |
| 封裝： | 0.150 INCH, PLASTIC, SO-14 |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 474K |
| 代理商： | LT1256CS |
13
LT1251/LT1256
APPLICATIO
S I
N
FOR
ATIO
U
In low gain applications, R
1
and R
2
are small compared to
the feedback resistors and therefore we can simplify the
equation to:
(
(
+
(
1
W
U
V
KV
)( )
+
1
R
R
R
R
K V
)
)(
R
R
R
R
1
sR C
R
OL
K
R
K
R
O
G
F
G
F
G
F
G
F
F
F
=
(
+
)
+
+
+
)
1
1
1
2
2
2
2
2
2
1
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 R
F1
and R
F2
. A 1% mis-
match in the feedback resistors results in a 0.25% error at
K = 0.5.
If we set R
F1
= R
F2
and assume R
OL
>> R
F1
(a 0.1% error
at low frequencies) the above equation simplifies to:
(
and
V
KV A
K V A
)
where A
R
R
A
R
R
O
V
V
V
F
G
V
F
G
=
+
= +
1
= +
1
1
2
1
1
1
2
2
2
1
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, V
1
) and Pin 14 is
grounded, then the gain is proportional to K.
V
V
KA
O
V
1
1
=
Similarly for the inverting case where the noninverting
inputs are grounded and the input voltages V
1
and V
2
drive
the normally grounded ends of R
G1
and R
G2
, we get:
General Equation for the Inverting Amplifier Case
V
KV
R
R
R
R
K V
R
R
R
R
sR C
R
OL
K
R
R
R
R
K
R
R
R
R
O
G
G
F
G
G
F
(
F
F
G
F
F
G
=
+
+
+
(
+
+
)
+
+
+
+
+
+
+
1
1
1
1
1
2
2
2
2
2
1
1
1
1
1
2
2
2
2
1
1
1
1
1
1
Note that the denominator is the same as the noninverting
case. In low gain applications, R
1
and R
2
are small
compared to the feedback resistors and therefore we can
simplify the equation to:
V
KV
R
K V
)
2
R
sR C
R
OL
K
R
K
R
O
G
G
F
F
=
+
(
+
+
+
(
)
1
1
2
1
2
1
1
1
Again, if we set R
F1
= R
F2
and assume R
OL
>> R
F1
(a 0.1%
error at low frequencies) the above equation simplifies to:
[
1
and
V
KV A
K V A
)
where A
R
R
A
R
R
O
V
V
V
F
G
V
F
G
=
+
(
]
=
=
1
2
1
1
2
2
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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| LT1256CS#PBF | 功能描述:IC AMP VIDEO FADE CONTRLD 14SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:TFT-LCD 面板：VCOM 驅(qū)動器 輸出類型:滿擺幅 電路數(shù):1 -3db帶寬:35MHz 轉(zhuǎn)換速率:40 V/µs 電流 - 電源:3.7mA 電流 - 輸出 / 通道:1.3A 電壓 - 電源，單路/雙路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:8-uMax-EP 包裝:管件 |
| LT1256CS#PBF | 制造商:Linear Technology 功能描述:VIDEO AMPLIFIER 5 40MHZ SOI 制造商:Linear Technology 功能描述:VIDEO AMPLIFIER, 5, 40MHZ, SOIC-14 |
| LT1256CS#TR | 功能描述:IC AMP VIDEO FADE 40MHZ 14SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LT1256CS#TRPBF | 功能描述:IC AMP VIDEO FADE CONTRLD 14SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動器 輸出類型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤（4x4） 包裝:帶卷 (TR) |
| LT1256CSPBF | 制造商:Linear Technology 功能描述:Op Amp Current Feedback +/-15/30V SOIC14 |
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