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參數(shù)資料
| 型號(hào)： | LA3401 |
| 廠(chǎng)商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories(帶FM附件VCO無(wú)需調(diào)整PLL FM MPX立體聲解調(diào)器) |
| 中文描述： | 壓控振蕩器非盈豐調(diào)整鎖相環(huán)調(diào)頻立體聲調(diào)頻解調(diào)器與配件（帶調(diào)頻附件壓控振蕩器無(wú)需調(diào)整盈豐鎖相環(huán)調(diào)頻立體聲解調(diào)器） |
| 文件頁(yè)數(shù)： | 9/15頁(yè) |
| 文件大小： | 445K |
| 代理商： | LA3401 |
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LA3401
No.1868–9/15
Muting output
Since the muting signal is delivered at the muting output (pin 11) in the following mode, external transistors can be
used to provide external muting.
AM
→
FM changeover mode (muting in the changeover mode)
Muting mode
￡
V
CC
–ON/OFF mode
Fig. 11 shows a sample application of external muting.
Muting in the V
CC
-ON mode
1. Muting time
Muting is turned ON for a certain period of time fixed
by external capacitor C13. Fig. 12 shows the relation
between the muting time and C13.
2. Values of AM/FM input coupling capacitors (C1, C2) and value of C13
If muting is released before the DC voltage on the AM input (pin 1) or FM input (pin 2) is stabilized after V
CC
is
turned ON, pop noise is generated. Therefore, the value of C13 must be determined by the input coupling capacitor
value. The adequate value of C13 for C1, C2 of 10
μ
F is 10
μ
F or thereabouts. If the value of C1, C2 is increased, the
value of C13 is also increased accordingly.
Feedback resistance of post amplifier and total gain, de-emphasis constant values
Table 1 shows the feedback resistance of post amplifier and total gain, de-emphasis
Table 1. Feedback resistance of post amplifier and total gain, de-emphasis
Total gain : Value in monaural mode
R1 · C15=R2 · C14=50
μ
s, 75
μ
s
)
R
(
1
R
l
T
s
μ
0
5
)
1
C
(
3
1
C
s
m
0
5
)
1
C
(
3
1
C
k
k
k
k
k
3
9
1
2
2
3
3
5
6
8
k
k
k
k
0
0
0
0
0
3
5
8
1
1
1
1
B
B
B
B
B
d
B
d
B
d
B
d
B
d
d
d
d
d
0
5
5
5
0
1
0
1
0
1
0
1
5
1
F
F
F
F
F
F
F
F
F
p
p
p
0
0
0
0
0
0
5
2
0
1
1
1
p
p
p
p
p
p
0
0
0
0
0
0
5
2
1
9
3
7
7
6
5
3
3
2
F
F
F
F
F
F
F
F
F
p
p
p
p
p
p
p
p
p
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
6
1
9
2
0
5
2
9
7
5
5
3
2
2
1
1
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PDF描述 |
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| LA3410 | VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories(帶FM附件VCO無(wú)需調(diào)整PLL FM MPX立體聲解調(diào)器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA3410 | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories |
| LA3420 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述: |
| LA343 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Optoelectronic |
| LA3430 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA3430M | 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:PLL FM MPX Stereo Demodulator with Pilot Canceler For Car Stereo Use |
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