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參數(shù)資料
| 型號(hào)： | LA1781M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip Tuner IC for Car Radios |
| 中文描述： | 單芯片調(diào)諧器IC的汽車收音機(jī) |
| 文件頁數(shù)： | 35/50頁 |
| 文件大?。?/td> | 567K |
| 代理商： | LA1781M |
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No. 6038-35/50
LA1781M
800
900
1000
60
80
70
90
100
1100
1200
A
Frequency — Hz
AM AGC f characteristics
Wide AGC
Operates for wide
band interference
Wide AGC
Operates for
wide band
interference
Middle AGC
Operates for
interference within
±
70 kHz of the
received frequency.
Middle AGC
Operates for
interference within
±
70 kHz of the
received frequency.
Narrow AGC
Operates at the
received frequency.
Fig.33
70
80
90
100
110
120
2
1.0
3
5
7
10
2
3
5
Received frequency:
1 MHz
A
μ
Pin 46 input — MHz
Wide Band AGC Circuit
30
0.022
μ
F
0.022
μ
F
0.022
μ
F
46
50
510
50
–6dB
SG
ANTD
Fig.34
62
57
+
VCC
0.022
μ
F
30
620
1MH
100
μ
H
100
μ
H
3
1
1
4
μ
F
1
0
μ
F
Wide band AGC adjustment resistor
A12084
FC18
The wide band AGC circuit in this IC has the frequency characteristics shown above. The pin 46 input frequency
characteristics are identical to those of the RF amplifier gate. This AGC circuit serves to prevent distortion at the
FET input when a strong signal is applied to the antenna circuit. The level at which the AGC circuit turns on can be
adjusted to an arbitrary level with the wide band AGC adjustment resistor. A delayed AGC on level can be handled
by reducing the value of the adjustment resistor.
Fig. 35
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1781M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Car Radios Single-Chip Tuner IC |
| LA1781MA-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA1781MD-A-MPB-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays |
| LA1781MD-B-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA1781ML-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
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