參數(shù)資料
型號(hào): LA1787M
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64
封裝: 14 X 14 MM, QFP-64
文件頁(yè)數(shù): 21/54頁(yè)
文件大小: 606K
代理商: LA1787M
Notes on 3D AGC (Keyed AGC)
The antenna damping current from the pin due to the pin diode flows when the V2 pin reaches the VCC - VBE
level.
The narrow AGC operates as follows.
When pin V39 > pin V24: The narrow AGC turns off.
When pin V39 < pin V24: The narrow AGC turns on.
No. 6655-28/54
LA1787M
+
55
W-AGC
DET
58
1
2
39
24
N-AGC
DET
+
+
VCC
ANT
DUMPING
90
A
S-meter
VS-meter
A11763
Fig. 8
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