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參數資料
型號: LA1784M
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝: QIP-64
文件頁數: 7/50頁
文件大小: 568K
代理商: LA1784M
No. 6039-15/50
LA1784M
Pin No.
Function
Description
Equivalent circuit
45
IF output
The IF amplifier load
+
42
DET
44
VCC
C
2.2
F
0.022
F
50 k
50 k
240 k
G1
10
SEEK
ON
IF
AGC
A11739
45
DET
Pin 40 VCC
A11740
46
VCC
50 pF
100
20 k
ANT DAMPING
DRIVER
W.AGC AMP.
A11741
Continued from preceding page.
Continued on next page.
G1; Used for time constant
switching during seeks.
Reception
τ = 2.2 F × 300 k
44
IF AGC
Seek
τ = 2.2 F × 10
The external capacitors are
connected to VCC.
This is because the IF amplifier
operates referenced to VCC.
AM antenna damping
I46 = 6 mA (maximum)
46
drive output
This is the antenna damping
Wide band AGC input
current.
相關PDF資料
PDF描述
LA1787NM AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
LA1787NM AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
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