参数资料
型号: LA1787M-MPB-E
厂商: ON Semiconductor
文件页数: 14/54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
VCC
20k ?
The HCC frequency characteristics
+
20k ?
41
HCC capacitor
are determined by the external
capacitor connected at this pin.
This pin is used to change the
frequency characteristics of the
unneeded audio band under
100 Hz in AM mode to produce
a clear audio signal.
Note: The LC capacitor must be
connected between this pin
and V CC (pin 40).
VCC
2200pF
VCC
C
42
41
A13580
42
AM L.C. pin
This is because the detector
circuit operates referenced
to V CC .
DET
50k ?
1k ?
+
The cutoff frequency f C is
50k ?
1k ?
determined by the following
formula.
A13581
f C = 1/2 π × 50 k ? × C
VCC
19kHz ∠ 0 °
BIAS
30k ?
43
Pilot detector
Inserting a 1-M ? resistor between
pin 43 and V CC will force the IC
to mono mode.
+
30k ?
30k ?
43
1 μ F
+
A13582
Continued on next page.
No. 6655-14/54
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