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參數(shù)資料
| 型號： | LA3401 |
| 廠商： | 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需調(diào)整盈豐鎖相環(huán)調(diào)頻立體聲解調(diào)器） |
| 文件頁數(shù)： | 11/15頁 |
| 文件大?。?/td> | 445K |
| 代理商： | LA3401 |
LA3401
No.1868–11/15
Decorder circuit (Refer to the Block Diagram in the Sample Application Circuit.)
The LA3401 adopts a decoder circuit of chopper type. The sub signal syncdetected by this decoder is applied to the post
amplifier minus input through Rb as shown in the Sample Application Circuit. This signal is matrixed with the main
signal coming out of amplifier A5 and passing through R
C
.
The gain for the sub signal is :
Rb
π
Rb
π
R1, R2 : Post amplifier feedback resistor
V
S
:
Peak value of input sub signal
VR1 :
Semifixed resistor for separation adjust
V
M
:
Peak value of input main signal
The gain for the main signal is :
Ra + VR1
In the LA3401, the gain of the main signal is varied with VR1 to adjust the separation. Since the IF output is generally
such that the sub signal level is lower than the main signal level, the separation can be adjusted by attenuating the main
signal level with VR1. The use of an antibirdie filter across the IF output and the FM input of the LA3401 may cause the
sub signal level to be raised, and when the sub signal level is higher than the main signal level the separation cannot be
adjusted with VR1. In this case, the sub signal level is attenuated to be less than the main signal level and applied to the
LA3401 and the separation is adjusted with VR1.
V
S
R1
S
R2
2
2
V
M
VR1
M
VR1
Rc
R1
Ra + VR1
R2
Rc
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA3410 | VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories(帶FM附件VCO無需調(diào)整PLL FM MPX立體聲解調(diào)器) |
| LA3430M | PLL FM MPX Stereo Demodulator with Pilot Canceler for Car Stereo Use(用于汽車立體聲PLL FM MPX立體聲解調(diào)器(帶引導(dǎo)消除器)) |
| LA3430 | PLL FM MPX Stereo Demodulator with Pilot Canceler for Car Stereo Use(用于汽車立體聲PLL FM MPX立體聲解調(diào)器(帶引導(dǎo)消除器)) |
| LA3433 | Car Stereo-Use PLL FM MPX Stereo Demodulator with Pilot Canceler(用于汽車立體聲PLL FM MPX立體聲解調(diào)器(帶引導(dǎo)消除器)) |
| LA3450 | PLL FM MPX Stereo Demodulator with Adjustment-Free VCO and Measure Against Adjacent Channel Interference(可自由調(diào)整VCO和帶防止附近通道干涉措施的PLL FM MPX立體聲解調(diào)器) |
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:Sanyo Semicon Device 功能描述:VCO Non-Adjusting PLL FM MPX Stereo Demodulator with FM Accessories |
| LA3420 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA343 | 制造商:未知廠家 制造商全稱:未知廠家 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:Sanyo Semicon Device 功能描述:PLL FM MPX Stereo Demodulator with Pilot Canceler For Car Stereo Use |
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