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參數(shù)資料
| 型號： | CLC5612 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Dual, High Output, Programmable Gain Buffer |
| 中文描述： | 雙路，高輸出，可編程增益緩沖器 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 208K |
| 代理商： | CLC5612 |
11
http://www.national.com
Figure 16: Differential Line Driver with
Load Impedance Conversion
Set up the CLC5612 as a difference amplifier:
I
Set the Channel 1 amplifier to a gain of +1V/V
I
Set the Channel 2 amplifier to a gain of -1V/V
Make the best use of the CLC5612’s output drive
capability as follows:
where R
eq
is the transformed value of the load imped-
ance, V
max
is the Output Voltage Range, and I
max
is the
maximum Output Current.
Match the line’s characteristic impedance:
Select the transformer so that it loads the line with a
value very near Z
o
over frequency range. The output
impedance of the CLC5612 also affects the match. With
an ideal transformer we obtain:
where Z
o(5612)
(j
ω
) is the output impedance of the
CLC5612 and |Z
o(5612)
(j
ω
)| << R
m
.
The load voltage and current will fall in the ranges:
The CLC5612’s high output drive current and low
distortion make it a good choice for this application.
Differential Input/Differential Output Amplifier
Figure 17 below illustrates a differential input/differential
output configuration. The bypass capacitors are the only
external components required.
Figure 17: Differential Input/Differential
Output Amplifier
V
n V
I
I
n
o
o
≤
≤
max
max
-5V
0.1
μ
F
6.8
μ
F
+5V
0.1
μ
F
6.8
μ
F
V
out
2
V
in
1
CLC5612
V
in
2
V
out
1
1k
1k
1k
1k
V
out
1 – V
out
2 = (V
in
1 – V
in
2) x 2
R
t2
V
in
R
t
R
m/2
R
m/2
R
L
Z
o
UTP
I
o
R
eq
1:n
V
d/2
1
7
6
8
5
3
4
2
1k
+
-
+
-
1k
1k
1k
CLC5612
-V
d/2
Note:
Supplies and bypassing not shown.
R
R
2 V
I
m
eq
max
max
+
=
R
R
Z
R
n
R
R
L
o
m
eq
L
eq
=
=
=
ReturnLoss
20 log
=
n
Z
j
Z
,dB
10
2
o 5612
o
( )
)
ω
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CLC5612IM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CLC5612IMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CLC5612IN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual, High Output, Programmable Gain Buffer |
| CLC5612M WAF | 制造商:Texas Instruments 功能描述: |
| CLC561A8 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Wideband, Low Distortion DriveR-Amps |
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