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參數(shù)資料
| 型號： | LA1776M |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 2-BAND, AUDIO TUNER, PQFP64 |
| 封裝： | 14 X 14 MM, QFP-64 |
| 文件頁數(shù)： | 11/41頁 |
| 文件大小： | 547K |
| 代理商： | LA1776M |
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Pin No.
Pin
Description
Equivalent circuit
No.8085-19/41
LA1776M
Continued on next page.
Continued from preceding page.
47
56
Antenna
damping
VCC
5.8 V
10 k
3.3
F
47
F
For AGC use
–
+
47
56
RF AGC bypass
RF AGC
RF AGC rectification capacitor
The low frequency distortion is determined as
follows:
Increasing C47 and C56 improves the distortion
but makes the response slower.
Reducing C47 and C56 aggravates the distortion
but makes the response faster.
*:If the audio is disturbed due to the RF AGC when
there are rapid changes in the reception field
strength (on the order of off to 80 dB), the
combination of the time constants due to C56 and
C47 must be changed.
50
51
5.7 V
10 k
10 k
0.022
F
330
50
51
FM IF input
IF bypass
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.
52
2 k
100
52
IF input
The input impedance is 2 k
.
53
57
IF OUT
IF IN
3.75 V
200
300
61 pin VCC
53
57
IF amplifier output
(AM/FM)
IF amplifier input
(AM/FM)
First IF amplifier input pin
Inverted output amplifier
The gain is switched between AM and FM modes
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相關(guān)代理商/技術(shù)參數(shù) |
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| LA1776M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
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