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參數(shù)資料
| 型號： | LA1781M |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封裝： | 14 X 14 MM, QIP-64 |
| 文件頁數(shù)： | 36/48頁 |
| 文件大?。?/td> | 508K |
| 代理商： | LA1781M |
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LA1781M
No.6038-41/48
Gain Distribution (FM)
This section investigates the gain in each block in the LA1781M when the Sanyo recommended circuits are used.
(Test conditions)
Ambient temperature : 26°C
Antenna and mixer input frequency : 98.1MHz
First and second IF input frequency : 10.7MHz
The input levels when VSM = 2V will be as follows.
ANT IN : 19dB
μ
MIX IN : 30dB
μ
1st IF IN : 42dB
μ
2nd IF IN : 60dB
μ
When the gains for each block are determined according to the above, the results are as follows.
RF GAIN : 11dB
MIX GAIN : 12dB
1st IF GAIN : 18dB
Fig. 54
(AM)
This section investigates the gain in each block in the LA1781M when the Sanyo recommended circuits are used.
(Test conditions)
Ambient temperature : 26°C
Antenna and mixer input frequency : 1MHz
First and second mixer input frequency : 10.7MHz
Second IF input frequency : 450kHz
The gains at each stage will be as follows.
RF Gain (ANT IN-pin62) : 17dB
1st MIX Gain (pin62-pin56) : 8dB
1st IF Gain (pin55-pin53) : 15dB
Fig. 55
FM
RF
MIX IN 64 pin
1st IF IN 56 pin
2nd IF IN 51 pin
ANT IN
11dB
12dB
18dB
AM
RF
Gain
1st MIX
Gain
1st IF
Gain
2nd MIX
Gain
2nd IF
Gain
1st MIX
1st IF
2nd MIX
2nd IF
AM DET
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| 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: |
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| 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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