- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379896 > CLC450 (National Semiconductor Corporation) Single Supply, Low-Power, High Output, Current Feedback Amplifier PDF資料下載
參數(shù)資料
| 型號： | CLC450 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Single Supply, Low-Power, High Output, Current Feedback Amplifier |
| 中文描述： | 單電源，低功耗，高輸出，電流反饋放大器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 203K |
| 代理商： | CLC450 |
http://www.national.com
10
I
R
t
- Optional resistor for inverting gain configura-
tions (Select R
t
to yield desired input impedance
= R
g
|| R
t
)
I
C
1
, C
2
- 0.1
μ
F ceramic capacitors
I
C
3
, C
4
- 6.8
μ
F tantalum capacitors
Components not used:
I
C
5
, C
6
, C
7
, C
8
I
R
1
thru R
8
The evaluation boards are designed to accommodate
dual supplies. The boards can be modified to provide
single supply operation.
For best performance; 1) do
not connect the unused supply, 2) ground the unused
supply pin.
SPICE Models
SPICE models provide a means to evaluate amplifier
designs. Free SPICE models are available for National’s
monolithic amplifiers that:
I
Support Berkeley SPICE 2G and its many derivatives
I
Reproduce typical DC, AC, Transient, and Noise
performance
I
Support room temperature simulations
The
readme
file that accompanies the diskette lists
released models, and provides a list of modeled parame-
ters.
The application note OA-18, Simulation SPICE
Models for National’s Op Amps, contains schematics and
a reproduction of the readme file.
Single Supply Cable Driver
The typical application shown on the front page shows
the CLC450 driving 10m of 75
coaxial cable.
CLC450 is set for a gain of +2V/V to compensate for the
divide-by-two voltage drop at V
o
.
The
Single Supply Lowpass Filter
Figures 9 and 10 illustrate a lowpass filter and design
equations. The circuit operates from a single supply of
+5V. The voltage divider biases the non-inverting input to
2.5V. And the input is AC coupled to prevent the need for
level shifting the input signal at the source.
design equations to determine R
1
, R
2
, C
1
, and C
2
based
on the desired Q and corner frequency.
Use the
Figure 9: Lowpass Filter Topology
Figure 10: Design Equations
This example illustrates a lowpass filter with Q = 0.707
and corner frequency f
c
= 10MHz. A Q of 0.707 was cho-
sen to achieve a maximally flat, Butterworth response.
Figure 11 indicates the filter response.
Figure 11: Lowpass Response
Twisted Pair Driver
The high output current and low distortion, of the
CLC450, make it well suited for driving transformers.
Figure 12 illustrates a typical twisted pair driver utilizing
the CLC450 and a transformer. The transformer
provides the signal and its inversion for the twisted pair.
Figure 12:Twisted Pair Driver
To match the line’s characteristic impedance (Z
o
) set:
I
R
L
= Z
o
I
R
m
= R
eq
Application Circuits
+
CLC450
-
R
f
1k
0.1
μ
F
C
1
V
o
V
in
R
g
0.1
μ
F
5k
4
7
6
0.1
μ
F
5k
R
1
158
3
2
+5V
0.1
μ
F
100
1.698k
R
2
158
C
2
100pF
Gain
K
1
R
R
Corner frequency
1
R R C C
Q
1
R C
R C
R C
R C
(1 K)
R C
R C
For R
R
R and C
C
C
1
RC
Q
1
(3 K)
f
g
c
2
2
1
2
1
2
c
=
= +
=
=
=
+
+
=
=
=
=
=
=
ω
ω
M
Frequency (Hz)
-21
-15
-9
-3
3
1M
10M
100M
+
CLC450
-
+
V
o
-
R
m
R
f
R
g
V
in
R
t
R
L
Z
o
UTP
I
L
R
eq
I:n
V = A
v
V
in
6
3
2
A
1
R
R
v
f
g
= +
V
n
v in
=
V
-n
4
A V
=
V
1n
2
A V
o
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CLC450AJ | Single Supply, Low-Power, High Output, Current Feedback Amplifier |
| CLC451 | Single Supply, Low-Power, High Output, Programmable Buffer |
| CLC451AJ | Single Supply, Low-Power, High Output, Programmable Buffer |
| CLC452 | Single Supply, Low-Power, High Output, Current Feedback Amplifier |
| CLC452AJ | Single Supply, Low-Power, High Output, Current Feedback Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CLC450AJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Single Supply, Low-Power, High Output, Current Feedback Amplifier |
| CLC450AJE | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CLC450AJM5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Feedback Operational Amplifier |
| CLC450AJP | 制造商:Rochester Electronics LLC 功能描述: |
| CLC451 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述: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)。