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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： | 8/25页 |
| 文件大小： | 265K |
| 代理商： | RC4200MT |
RC4200
PRODUCT SPECIFICATION
16
REV. 1.2.1 6/14/01
Amplitude Modulator with A.G.C.
In many AC modulator applications, unwanted output
modulation is caused by variations in carrier input ampli-
tude. The versatility of the RC4200 multiplier can be utilizes
to eliminate this undesired uctuation. The extended range
multiplier circuit (Figure 4) shows an output amplitude
inversely proportional to the reference voltage VREF.
By making VREF proportional to VY (where VY is the car-
rier input) such that:
Then the denominator becomes a variable value that auto-
matically provides constant gain, such that the modulating
input (VX) modulates the carrier (VY) with a xed scale
factor even though the carrier varies in amplitude.
i.e., V
0
V
XVY
V
REF
----------------
R
0Rd
R
1R2
-------------
=
V
REF
V
H
V
Y
()
∫
==
If VH is made proportional to the average value of Asin
ωt
(i.e., 2A/
π) and scaled by a value of π/2 then:
VH=A
and if: VX = Modulating input (VM)
and: VY Carrier input (Asin
ωt)
Then: V0 = K VM sin
ωt where K =
The resistor scaling is determined by the dynamic range of
the carrier variation and modulating input.
The resistor values are solved, as with the other extended
range circuits, in terms of the input voltages.
Input voltages:
Modulation voltage (VM): 0
≤ VM ≤ VX(max.)
Carrier (VY): VY = Asin
ωt
Carrier amplitude uctuation (
A):
A(min.) sint
≤ VY ≤ A(max.) sinωt
Dynamic Range (N): A(max.)/A(min.),
A(max.) = VH(max.) and A(min.) = VH(min.)
R
0Rd
R
1R2
-------------
Figure 15. RMS to DC Converter VOUT=
√VIN2
65-1869
RC4200A
Multiplier
S
OUT
300K
100K
-V
V
3
6
4
5
8
7
1
2
100K
300K
REF
+V
200K
S
-V
S
+V
10K
30K
15K
100
0.1 F
*Determines sacle factor (K) for X function.
**Determines sacle factor (K) for X function.
+V = +V
= +15V
-V = -15V
1/2
RC5532
X
44.4K**
80K
60K
10K
RC4200A
Multiplier
S
100K
-V
36
4
5
8
7
1
2
167K
60K
13.3K
S
-V
S
+V
10K
30K
45.5 K
100
0.1 F
1/2
RC5532
X
250K*
50K
100K
V
IN
22 F
2
83.3K
100K
2
s
REF
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相关代理商/技术参数 |
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|---|---|
| RC4200MT_32 | 功能描述:增效器/分频器 RoHS:否 制造商:Texas Instruments 产品:Multiplier 逻辑系列: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 |
| RC4200N | 功能描述:增效器/分频器 DIP-8 RoHS:否 制造商:Texas Instruments 产品:Multiplier 逻辑系列: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 |
| RC4200N_32 | 功能描述:增效器/分频器 RoHS:否 制造商:Texas Instruments 产品:Multiplier 逻辑系列: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:Through Hole 封装 / 箱体:PDIP-14 |
| RC4207 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| RC4207FNB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Voltage-Feedback Operational Amplifier |
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