参数资料
型号: RC4200MT
厂商: FAIRCHILD SEMICONDUCTOR CORP
元件分类: 模拟运算功能
中文描述: ANALOG MULTIPLIER OR DIVIDER, PDSO8
封装: SOIC-8
文件页数: 9/25页
文件大小: 265K
代理商: RC4200MT
PRODUCT SPECIFICATION
RC4200
REV. 1.2.1 6/14/01
17
The maximum and minimum values for I1 and I2 lead to:
For a dynamic range of N, where
These equations combine to yield:
Example 1
VY = Asin
ωt 2.5V ≤ A ≤ 10V, therefore N = 4
0V
≤ VM ≤ 10V, therefore VX(max.) = 10V
K = 1, therefore V0 = VM sin
ωt
Example 2
VY = Asin
ωt 3 ≤ A ≤ 6, therefore N = 2
0V
≤ VM ≤ 8V, therefore VX(max.) = 8V
K = 0.2, therefore V0 = 0.2 VM sinwt
so:
R1 = 53.3K, R2 = 40K
Ra = 60K and R0 = 7.11K
I
1(max.)
V
X max.
()
R
1
-------------------------
V
H max.
()
R
a
-------------------------
+
250
A
==
I
1(min.)
V
H min.
()
R
a
------------------------50
AV
M min.
()
0
==
=
I
2(max.)
A max.
()
R
2
---------------------
V
H max.
()
R
a
-------------------------
+
250
A
==
I
2(min.)
V
H min.
()
R
a
------------------------50
A
==
N
A max.
()
A min.
()
---------------------
5,
<
=
R
1
V
X(max.)
5N
()50A
---------------------------------, R2
A(max.)
5N
()50A
---------------------------------,
=
R
a
A(min.)
50
A
------------------- and R
O = K
R
1R2
R
a
-------------,
=
R
1
V
X(max.)
50
A
------------------------
10V
50
A
--------------
200K
==
=
R
1
A(max.)
50
A
--------------------
10V
50
A
--------------
200K
==
=
R
a
A(min.)
50
A
-------------------
2.5V
50
A
--------------
50K
==
=
R
O
K
R
1R2
R
a
-------------
1
200K
×
50K
---------------------------------
800K
==
=
Figure 16. Amplitude Modulator with A.G.C.
65-1866
RC4200
Multiplier
V
S
M
Y
O
S
R1
100
-V
R
+V
S
-V
3
6
4
5
8
7
1
2
V
30K
1/4
RC4156
10K
R*
30K
470
R1
S
-V
S
+V
R2
R1 Ra
Ra
A
30K
100
0.1 F
0.1 F
S
-V
S
+V
R2 Ra
0.1 F
1/4
RC4156
1/4
RC4156
R3
R2
R3
30K
R3
30K
1/2 R3
15K
1N914
10K
=
SIN
ωt
Ra
V =
V sin
O
M
ω t
C1
R3 47K
p
2
V =
AVG A sin
= A
H
p
2
ωt
*R1
R2
Ra RO
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