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参数资料
| 型号： | LA1787M |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封装： | 14 X 14 MM, QFP-64 |
| 文件页数： | 16/54页 |
| 文件大小： | 606K |
| 代理商： | LA1787M |
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No. 6655-23/54
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.
–20
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LA1787M
LA1780M
LA1781M
AM S-Meter Voltage
Antenna input — dB
S-meter
voltage
—
V
(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.
35
40
45
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55
60
0
1
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40
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60
0
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Change in Separation (LA1781M): First IF Input
Time after power on — minutes
Change
in
separation
—
dB
Change in Separation (LA1787M): First IF Input
Time after power on — minutes
Change
in
separation
—
dB
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| LA2232 | SPECIALTY CONSUMER CIRCUIT, DIP24 |
| LA2232M | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1787M_09 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M-MPB-E | 功能描述:调谐器 CAR RADIO TUNER RoHS:否 制造商:NXP Semiconductors 功能: 噪声系数: 工作电源电压: 最小工作温度: 最大工作温度: |
| 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 |
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