參數(shù)資料
型號(hào)： LA75505M
文件頁(yè)數(shù)： 6/13頁(yè)
文件大?。?/td> 224K
代理商： LA75505M
No. 6930-6/13
LA75505M
Pin Functions
Pin No.
Pin
Pin Function
Internal Circuit
Inputs the SIF signal from the first SIF output.
Set the input level to 90 dBμV or lower because of
the dynamic range of the internal filter.
1
SIF INPUT
This is the FM feedback filter pin. It is composed of
a C and R filters.
1 μF is normally used as the capacitance.
If the capacitance is a low value, the audio output
level is small at low frequencies.
Moreover, the audio output level can be made
smaller by increasing the resistance connected in
series.
Use a resistance of 3 k
or higher.
2
FM FILTER
This is the first SIF output.
In case of inter carrier, the chroma carrier is bigger
than split carrier applications, so that it is
recommended to connect a filter externally.
3
1st SIF OUT
Filter example
Continued on next page.
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