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参数资料
| 型号： | LA1862M |
| 元件分类： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PDSO36 |
| 封装： | MFP-36 |
| 文件页数： | 7/27页 |
| 文件大小： | 810K |
| 代理商： | LA1862M |
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4.
The following figure illustrates one possible circuit design using both the IF count buffer and the SD output circuit.
Noise Canceller Block
1.
The resistor and capacitor connected to pin 6 determine
the noise canceller sensitivity.
2.
The resistor and capacitor connected to pin 7 determine
the noise AGC.
3.
Pin 9 is the gate trigger output. The resistor and capacitor
connected to pin 9 determine the length of time that the
gate is open.
4.
The resistor and capacitor connected to pins 10 and 11 are
for holding the input signal level when the noise canceller
gate operates. The storage time depends on the time that
the gate is open. The time constant for the RC circuit on
pins 10 and 11 must, therefore, be such that the output
retention signal level does not drop during this interval.
5.
Pin 26 is the noise canceller input. An appropriate input level is 250 mVrms for 100% dev and fm = 1 kHz. Excessive input
can exceed the noise canceller dynamic range, increasing the THD. Insufficient input, on the other hand, lowers the
signal-to-noise ratio and reduces pilot lamp sensitivity.
IF count buffer output
Apply 5 V for seek
SD output
Noise canceller input waveform
Noise canceller output waveform
Output retention
(storage)
LA1862M
No. 4092- 15/27
相关PDF资料 |
PDF描述 |
|---|---|
| LA1863M | 1-BAND, AUDIO TUNER, PQFP44 |
| LA1867NM | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| LA1875M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO36 |
| LA1875M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO36 |
| LA1883M | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LA1867NM | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Car Radio Single-Chip Tuner System |
| LA1867NM-MPB-E | 制造商:ON Semiconductor 功能描述: |
| LA186B-9SEF9UG-3-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA186B-9SEF-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
| LA186B-DBK-2-PF | 制造商:LIGITEK 制造商全称:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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