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參數(shù)資料
| 型號(hào)： | LA1145 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | FM IF System (Quadrature Detector) for Car Radio |
| 中文描述： | 如果系統(tǒng)（正交探測器）車用收音機(jī)調(diào)頻 |
| 文件頁數(shù)： | 10/17頁 |
| 文件大?。?/td> | 335K |
| 代理商： | LA1145 |
1)
Current path during detuning
2)
Current return path from detuning
As can be seen from the above circuit diagrams, the time constant during detuning is determined by the internal PNP
resistance, the NPN collector resistance and the capacitance of the externally- mounted capacitor. This time constant is
determined by the external resistance R
AFC
and capacitor C. This time constant,
τ
= R
AFC
×
C, must be set depending on the
required search time.
3.
Narrow-band SD output circuit
An IF count circuit is provided for equipment compatibility for the European marketplace. However, if the band is made
narrow using only the SD circuit, there is a tendency for the number of erroneous stops caused by an undesired signal to
increase. To prevent this, two threshold voltages should be used to control the SD circuit.
The input/output current from pin 8 becomes zero during return.
SD output
SD sensitivity setting
Mute driver pin for the 2nd threshold voltage.
Band Mute Characteristics (1)
Without C
17
A
Frequency,
f – kHz
Band Mute Characteristics (2)
A
With C
17
= 10000 pF
Frequency,
f – kHz
LA1145, 1145M
No. 2725-10/17
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA1145M | FM IF System (Quadrature Detector) for Car Radio |
| LA1150N | FM IF Amplifier for Car Radio |
| LA1175 | FM Front End For Car Radio, Home Stereo Applications |
| LA1175M | FM Front End For Car Radio, Home Stereo Applications |
| LA1177 | Electronic Tuning-Use FM Front End for Car Radio, Home Stereos |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA1145M | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA1145M-TLM-E | 功能描述:射頻接收器 CAR RADIO FM IF SYSTEM RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| LA1150 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| LA1150N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:FM IF Amplifier for Car Radio |
| LA-115-24-02-00-00 | 功能描述:熱電組件 Liquid Air 113W 5.8A 139W 300x152mm RoHS:否 類型:Air to Air Assembly 制冷功率:58 W 最大電流:6.2 A 最大電壓:12 V 制造商:Laird Technologies / Thermal Solutions |
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