- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384217 > CLC452AJ-QML Current-Feedback Operational Amplifier PDF資料下載
參數(shù)資料
| 型號： | CLC452AJ-QML |
| 英文描述： | Current-Feedback Operational Amplifier |
| 中文描述： | 電流反饋運(yùn)算放大器 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大?。?/td> | 198K |
| 代理商： | CLC452AJ-QML |
http://www.national.com
8
AC Coupled Single Supply Operation
Figures 3 and 4 show possible non-inverting and invert-
ing configurations for input signals that go below 0.8V
DC. The input is AC coupled to prevent the need for
level shifting the input signal at the source. The resistive
voltage divider biases the non-inverting input to V
CC
÷ 2
= 2.5V (For V
CC
= +5V).
Figure 3: AC Coupled Non-Inverting Configuration
Figure 4: AC Coupled Inverting Configuration
Dual Supply Operation
The CLC450 operates on dual supplies as well as single
supplies. The non-inverting and inverting configurations
are shown in Figures 5 and 6.
Figure 5: Dual Supply Non-Inverting Configuration
Figure 6: Dual Supply Inverting Configuration
Feedback Resistor Selection
The feedback resistor, R
f
, affects the loop gain and
frequency response of a current feedback amplifier.
Optimum performance of the CLC450, at a gain of +2V/V,
is achieved with R
f
equal to 1k
. The frequency
response plots in the
Typical Performance
sections
illustrate the recommended R
f
for several gains. These
recommended values of R
f
provide the maximum band-
width with minimal peaking. Within limits, R
f
can be
adjusted to optimize the frequency response.
I
Decrease R
f
to peak frequency response and
extend bandwidth
I
Increase R
f
to roll off frequency response and
compress bandwidth
As a rule of thumb, if the recommended R
f
is doubled,
then the bandwidth will be cut in half.
Unity Gain Operation
The recommended R
f
for unity gain (+1V/V) operation
is 1.5k
. R
g
is left open. Parasitic capacitance at the
inverting node may require a slight increase in R
f
to
maintain a flat frequency response.
Bandwidth vs. Output Amplitude
The bandwidth of the CLC450 is at a maximum for
output voltages near 1V
pp
. The bandwidth decreases
for smaller and larger output amplitudes. Refer to the
Frequency Response vs. V
o
plots.
Load Termination
The CLC450 can source and sink near equal amounts of
current. For optimum performance, the load should be
tied to V
cm
.
Driving Cables and Capacitive Loads
When driving cables, double termination is used to
prevent reflections. For capacitive load applications, a
small series resistor at the output of the CLC450 will
improve stability and settling performance. The
Frequency Response vs. C
L
and
Recommended R
s
vs. C
L
plots, in the typical performance section, give the
recommended series resistance value for optimum
flatness at various capacitive loads.
+
CLC450
-
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
R
g
C
R
4
7
6
C
c
R
V
V
1
R
R
2.5
o
in
f
g
=
+
+
low frequency cutoff
1
2 R C
, where: R
R
2
c
in
=
=
R
R
source
>>
3
2
V
CC
V
CC
2
+
CLC450
-
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
R
4
7
6
C
c
R
V
V
R
R
2.5
o
in
f
g
=
+
low frequency cutoff
1
2 R C
c
=
R
g
3
2
V
CC
V
CC
2
+
CLC450
-
R
f
0.1
μ
F
6.8
μ
F
V
o
V
in
V
CC
0.1
μ
F
6.8
μ
F
V
EE
3
2
4
7
6
+
R
g
R
t
+
CLC450
-
R
f
0.1
μ
F
6.8
μ
F
+
V
o
V
in
V
CC
0.1
μ
F
6.8
μ
F
V
EE
R
g
R
b
3
2
4
7
6
+
R
t
R
b
provides DC bias
Note:
Select R
to yield desired
R
in
= R
t
|| R
g
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CLC453 | |
| CLC505AID | Current-Feedback Operational Amplifier |
| CLC501AJE-TR13 | Current-Feedback Operational Amplifier |
| CLC505AJP | Current-Feedback Operational Amplifier |
| CLC505AJ-QML | Current-Feedback Operational Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CLC452M/MA/N WAF | 制造商:Texas Instruments 功能描述: |
| CLC453 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| CLC453AJE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM PROG BUFFER |
| CLC453AJM5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-SM PROG BUFFER |
| CLC453AJP | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Comlinear CLC453 Single Supply, Low-Power, High Output, Programmable Buffer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。