參數(shù)資料
型號(hào)： MAX4188ESD
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Single/Triple, Low-Glitch, 250MHz, Current- Feedback Amplifiers with High-Speed Disable
中文描述： TRIPLE OP-AMP, PDSO14
封裝： SO-14
文件頁(yè)數(shù)： 19/20頁(yè)
文件大?。?/td> 212K
代理商： MAX4188ESD
M
S ingle/Triple, Low-Glitc h, 250MHz, Current-
Feedbac k Amplifiers with High-S peed Disable
______________________________________________________________________________________
19
VIDEO
IN
VIDEO
OUT
75
75
CABLE
75
CABLE
R
F
560
R
G
560
75
75
+5V
-5V
0.1μF
MAX4188
0.1μF
Figure 5. Video Line Driver Application
R
G
R
F
R
S
R
L
C
L
V
IN
MAX4188
MAX4189
MAX4190
Figure 6a. Using an Isolation Resistor (R
S
) for High Capacitive
Loads
The total output-referred noise voltage is:
The MAX4188/MAX4189/MAX4190 have a very low,
2nV/
√
Hz
noise voltage. The current noise at the positive
input (i
n+
) is 4pA/
√
Hz
, and the current noise at the
inverting input is 5pA/
√
Hz
.
An example of the DC error calculations, using the
MAX4188 typical data and typical operating circuit
where R
F
= R
G
= 560k
(R
F
||
R
G
=280
), and
R
S
= 37.5
, gives the following:
Calculating the total output noise in a similar manner
yields:
With a 200MHz system bandwidth, this calculates to
68μV
RMS
(approximately 408μVp-p, choosing the six-
sigma value).
V ideo Line Driver
The MAX4188/MAX4189/MAX4190 are well suited to
drive coaxial transmission lines when the cable is termi-
nated at both ends (Figure 5). Cable frequency
response can cause variations in the signal’s flatness.
See Table 1 for optimum R
F
and R
G
values.
Driving Capac itive Loads
The MAX4188/MAX4189/MAX4190 are optimized for
AC performance. Reactive loads decrease phase mar-
gin and may produce excessive ringing and oscillation.
Unlike most high-speed amplifiers, the MAX4188/
MAX4189/MAX4190 are tolerant of capacitive loads up
to 50pF. Capacitive loads greater than 50pF may
cause ringing and oscillation. Figure 6a shows a circuit
that eliminates this problem. Placing the small (usually
15
to 33
) isolation resistor, R
S
, before the reactive
load prevents ringing and oscillation. At higher capaci-
tive loads, the interaction of the load capacitance and
isolation resistor controls AC performance. Figures 6b
and 6c show the MAX4188 and MAX4189 frequency
response with a 100pF capacitive load. Note that in
each case, gain peaking is substantially reduced when
the 20
resistor is used to isolate the capacitive load
from the amplifier output.
e
x
x
x
x
x
e
Hz
n OUT
(
n OUT
(
)
)
.
4 8
/
=
(
)
2
+
+
=
1 1
4
10
37 5
5
10
280
2
10
12
2
12
9
2
nV
V
x
x
x
x
x
V
OUT
OUT
=
+
. mV
(
)
=
1
10
37 5
2
10
280
1 5
10
1 1
4 1
6
6
3
.
.
e
R
R
[
x
i
R
)
i
R
)
R
e
n OUT
(
F
G
n
S
n
F
G
n
)
||
=
+
(
[
]
+
(
]
+
(
)
+
1
2
2
2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4188ESD+ 功能描述:視頻放大器 200MHz 1.5mA Current-Feedback RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel
MAX4188ESD+T 功能描述:視頻放大器 200MHz 1.5mA Current-Feedback RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel
MAX4188ESD-T 功能描述:視頻放大器 RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel
MAX4188EVKIT 功能描述:放大器 IC 開發(fā)工具 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
MAX4189 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single/Triple, Low-Glitch, 250MHz, Current-Feedback Amplifiers with High-Speed Disable
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