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參數(shù)資料
| 型號： | LA1780M |
| 元件分類： | 調諧器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數(shù)： | 9/38頁 |
| 文件大小： | 764K |
| 代理商： | LA1780M |
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No. 5724-17/38
LA1780M
Pin No.
Function
Description
Equivalent circuit
52
IF input
The input impedance is 2 k
.
Antenna
damping
Inverter
Pin 24
For AGC
use
Continued from preceding page.
Continued on next page.
FM muting on level
Modify the value of the external
47
adjustment
resistor to adjust the muting on
level.
RF AGC rectification capacitor
The low frequency distortion is
determined as follows:
Increasing C48 and C57 improves
48
RF AGC bypass
the distortion but makes the
57
RF AGC
response slower.
Reducing C48 and C57
aggravates the distortion but
makes the response faster.
50
IF bypass
51
FM IF input
Due to the high gain of the limiter
amplifer, care must be taken when
choosing the grounding point for
the limiter amplifer input capacitor
to prevent oscillation.
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| LA1781M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
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| LA1787NM | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LA1780MA-A-MPB-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:Rochester Electronics LLC 功能描述: 制造商:ON Semiconductor 功能描述:FTRAY - ANALOG CAR RADIO TUNER |
| LA1781M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Car Radios Single-Chip Tuner IC |
| 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 |
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