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參數(shù)資料
| 型號： | LA1135 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | AM Tuner System for Car Radios and Home Stereos(應(yīng)用于車載電臺和家庭立體聲的AM調(diào)諧器) |
| 中文描述： | 上午調(diào)諧器系統(tǒng)的汽車收音機(jī)和家庭音響（應(yīng)用于車載電臺和家庭立體聲的上午調(diào)諧器） |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 455K |
| 代理商： | LA1135 |
Proper cares in using IC
1.
2.
3.
Bias condition: RF V
CC
%
IF V
CC
Avoid coupling between the antenna tuning circuit and the local oscillation.
Connect detection capacitor C15 across pins 13 (output) and 14 (V
CC
) so that no leakage of the IF signal to the GND line
occurs. (If connected to GND, the tweet and the usable sensitivity may get worse.) Radiation from C15 may cause harmonics
in the IF signal to return to the RF stage, thereby leading to more tweet interference. So, connect C15 as close to pins 13, 14
as possible. Consider the direction of the capacitor and separate it from the ANT circuit.
For R9, use a semifixed resistor with V
SM
considered.
When designing the coils, consider the following conditions.
Shown below is the input level at each pin at which the detection output at f
m
= 400 Hz 30% mod becomes –25 dB.
4.
5.
ANT
16.0
MIX
28.0
IF
Det
61.0
45.0
(dBμ)
How to apply input to each stage
6.
ANT damping
To make the ANT damping constant within the receiving band, change the application circuit as shown below.
Measures
Replace R1 with C
D
.
C
D
(2000 pF to 3000 pF or thereabouts)
Relocate L2.
Damping (600 kHz to 1400 kHz)
Old circuit –15 dB
New circuit –4 dB
ANT stage
MIX stage
ANT input
IF stage
Det stage
Unit (resistance:
, capacitance: F)
Old circuit
New circuit
Double tuning
Double tuning
LA1135, 1135M
No. 1272-6/18
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA1136N | AM Tuners for Car Radios and Home Stereos(應(yīng)用于車載電臺和家庭立體聲的AM調(diào)諧器) |
| LA1140 | FM IF System for Car Radio |
| LA1143 | FM IF System for Car Radios |
| LA1145 | FM IF System (Quadrature Detector) for Car Radio |
| LA1145M | FM IF System (Quadrature Detector) for Car Radio |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA11352 | 制造商:Square D by Schneider Electric 功能描述:CIRCUIT BREAKER AUXILIARY SWITCH 2A/2B |
| LA1135M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuner System for Car Radios and Home Stereos |
| LA1136 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos |
| LA1136M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA1136N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos |
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