參數(shù)資料
型號(hào)： LA1780M
元件分類： 調(diào)諧器
英文描述： 2-BAND, AUDIO TUNER, PQFP64
封裝： QFP-64
文件頁(yè)數(shù)： 4/38頁(yè)
文件大?。?/td> 764K
代理商： LA1780M
No. 5724-12/38
LA1780M
Pin No.
Function
Description
Equivalent circuit
Pin 28
Continued from preceding page.
Continued on next page.
The MRC detector time constant
27
MRC control voltage time
is determined by a 1-k
resistor
constant
and C2 when discharging and by
the 7-A current and C2 when
charging.
28
SNC control input
The sub-output is controlled by a
0 to 1-V input.
The high band frequency output is
controlled by a 0 to 1-V input.
It can also be controlled by the
29
HCC control input
MRC output.
Use a resistor of at least 100 k
when controlling with the pin 32
FM S-meter signal.
MRC input
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