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): 9/48頁
文件大?。?/td> 508K
代理商: LA1781M
LA1781M
No.6038-17/48
Continued from preceding page.
Pin No.
Pin function
Pin description
Equivalent circuit
6
Front end VCC AM/FM
switching
Pin 6 functions both as the FM front
end VCC and the AM/FM switching
circuit.
V6 voltage
Mode
When 8V
→ FM
OPEN
→ AM
+
3
6
+
--
FM.F.E
AGC
AM/FM
switching circuit
SD
VCC
510
Ω
100k
Ω
3.3V
GND
8V
62
1st MIX
INPUT
First mixer input
The input impedance is about 10k
Ω.
62
AM 1st
MIX
to RF
Amp.
10k
Ω
2.1V
10
AM 2nd OSC
Crystal oscillator circuit
The Kinseki, Ltd. HC-49/U-S and
a CL of 20pF must be used.
10
10k
Ω
5.6V
20pF
33pF
X tal
to 2nd
MIX
相關(guān)PDF資料
PDF描述
LA1784M AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
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LA1800 AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP22
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