参数资料
型号: LA1787M-MPB-E
厂商: ON Semiconductor
文件页数: 15/54页
文件大小: 0K
描述: IC CAR RADIO TUNER 64QFP
标准包装: 60
频率: 520kHz ~ 1.71MHz,64MHz ~ 108MHz
调制或协议: AM,FM
应用: 车载音频
数据接口: PCB,表面贴装
天线连接器: PCB,表面贴装
电源电压: 8V
工作温度: -40°C ~ 85°C
封装/外壳: *
供应商设备封装: *
包装: *
LA1787M
Continued from preceding page.
Pin No.
Function
Description
Equivalent circuit
+
0.022 μ F
240k ?
VCC
C
2.2 μ F
G1; Used for time constant
42
44
VCC
switching during seeks.
? Reception
τ = 2.2 μF × 300 k ?
DET
50k ?
44
IF AGC
? Seek
τ = 2.2 μF × 10 ?
The external capacitors are
connected to V CC .
This is because the IF amplifier
operates referenced to V CC .
G1
50k ?
IF
AGC
SEEK
ON
10 ?
A13583
Pin 40 VCC
45
Pin 40 VCC
45
IF output
The IF amplifier load
46
50pF
100 ?
VCC
DET
A13584
46
AM antenna damping
drive output
Wide band AGC input
I 46 = 6 mA (maximum)
This is the antenna damping
current.
VCC
20k ?
W.AGC AMP.
ANT DAMPING
DRIVER
A13585
Continued on next page.
No. 6655-15/54
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