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参数资料
| 型号： | LA1787M-MPB-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 23/54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： | * |
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LA1787M
2. Modified circuits
The following characteristics have been improved over those of the The LA1784M.
? The AM adjacent channel interference characteristics ( ? 40 kHz) have been improved.
? The AM S-meter curve slope has been increased.
? The FM separation temperature characteristics have been improved.
? The stereo indicator sensitivity has been improved.
? The FM oscillator circuit has been omitted.
(1) AM interference characteristics improvement
The second signal interference and suppression have been improved for adjacent channels (±40 kHz) by increasing
the AM second mixer input dynamic range.
(2) The AM S-meter curve slope has been increased.
The slope of the AM S-Meter curve has been increased from that of the LA1781M and LA1784M.
AM S-Meter Voltage
7
6
A1
5
4
L
7
87
M
LA1780M
LA
3
2
17
81
M
1
0
–20
0
20
40
60
80
100
120
140
Antenna input — dB μ
(3) FM separation temperature characteristics improvement
The temperature characteristics have been improved, the amount of change in the separation due to drift when at
power on has been stabilized. This makes it easier to adjust the separation.
60
55
50
45
40
Change in Separation (LA1781M): First IF Input
Change in Separation (LA1787M): First IF Input
60
55
50
45
40
35
0
1
2
3
35
0
1
2
3
Time after power on — minutes
Time after power on — minutes
No. 6655-23/54
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1787NM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM-MPB-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / ANALOG CAR RADIO TUNER |
| LA1787NM-TLM-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Tape and Reel 制造商:ON Semiconductor 功能描述:REEL / ANALOG CAR RADIO TUNER |
| LA17B-10H | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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