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): 47/48頁
文件大小: 508K
代理商: LA1781M
LA1781M
No.6038-8/48
Continued from preceding page.
Pin No.
Pin function
Pin description
Equivalent circuit
15
16
MPX output (left)
MPX output (right)
Deemphasis
50
μs : 0.015μF
75
μs : 0.022μF
15
3.3k
Ω
3.3k
Ω
VCC
0.015
μF
0.015
μF
16
17
Pilot canceller signal output
Adjustment is required since the pilot
signal level varies with the
sample-to-sample variations in the IF
output level and other parameters.
17
18
VCC
20k
Ω
10k
Ω
0.01
μF
100k
Ω
6.7k
Ω
18
Pilot canceller signal output
Pin 18 is the output pin for the pilot
canceller signal.
17
18
VCC
0.01
μF
1.5k
Ω
100k
Ω
19
Separation
adjustment pin
Use a trimmer to adjust the
subdecoder input level.
(The output level is not modified in
mono and main modes.)
19
5k
Ω
Composit
signal
DECODER
30k
Ω
0.047
μF
Continued on next page.
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