- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358726 > LA1787M (Sanyo Electric Co.,Ltd.) Single-Chip Tuner IC for Car Radios PDF資料下載
參數(shù)資料
| 型號： | LA1787M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-Chip Tuner IC for Car Radios |
| 中文描述： | 單芯片調(diào)諧器IC的汽車收音機 |
| 文件頁數(shù)： | 24/54頁 |
| 文件大?。?/td> | 606K |
| 代理商： | LA1787M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當(dāng)前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁
No. 6655-24/54
LA1787M
(4) Stereo indicator sensitivity improvement
The stereo indicator sensitivity (on/off) is equivalent to that of the LA1780M
Stereo on level
Stereo off level
LA1781M/1784M
4.1%
3.1%
LA1787M/1780M
2.6%
1.6%
*
: The pilot level such that the stereo indicator goes on or off for a 10.7 MHz unmodulated IF input.
(5) FM oscillator circuit removed
The internal FM oscillator circuit provided in the LA1781M has been removed. The FM oscillator level can be
adjusted by constructing an external circuit block.
*: However, this requires 4 more external parts than the LA1781M: 1 transistor and 3 resistors/capacitors.
4
Vt
VCC
VCC
A13600
4
Vt
VCC
IC internal
IC internal
A13601
LA1787M/1784M FM OSC
LA1780M/1781M FM OSC
3. Gain distribution
The table below shows the gain distribution of the LA1780M, LA1784M, and LA1787M. (These are measured
values.) Compared to the LA1784M, the total gain is lower.
1st MIX (10.7)
1st IF (10.7)
2nd MIX (450)
2nd IF (450)
LA1780M
10 dB
3.3 dB
3.2 dB
69 dB
LA1784M
7.5 dB
13 dB
7 dB
66 dB
LA1787M
7.5 dB
3.5 dB
8.6 dB
67 dB
First mixer
First IF amplifier
Second mixer
Second IF amplifier
: No circuit changes from the LA1784M.
: Equivalent to the LA1780M circuit. (The gain is lower than that in the LA1781M and LA1784M.)
: The mixer circuit has been modified to improve adjacent channel suppression and interference.
: Equivalent to the LA1780M circuit.
(Typical value)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA17 | 10 TO 1000 MHz TO-8 CASCADABLE LIMITING AMPLIFIER |
| LA1800 | FM/AM Single-Chip Radio |
| LA1805 | AM/FM-IF/MPX Tuner System for Radio-Casette Recorders, Music Centers |
| LA1806 | AM/FM-IF/MPX Tuner System for Radio-Cassette Recorders, Music Centers |
| LA1810 | AM/FM/MPX Tuner System for Radio-Cassette Recorders, Music Centers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1787M_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Tuner IC for Car Radios |
| LA1787M-MPB-E | 功能描述:調(diào)諧器 CAR RADIO TUNER RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LA1787NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Single-Chip Car Radio System IC |
| LA1787NM_09 | 制造商:SANYO 制造商全稱: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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。