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參數(shù)資料
| 型號(hào)： | LA1862M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Single-chip Tuner System for Car Stereo(用于汽車立體聲的單芯片調(diào)諧器) |
| 中文描述： | 單芯片調(diào)諧器的汽車音響系統(tǒng)（用于汽車立體聲的單芯片調(diào)諧器） |
| 文件頁數(shù)： | 16/27頁 |
| 文件大小： | 683K |
| 代理商： | LA1862M |
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MPX Block
1.
The variable resistor between pins 26 and 28 is for
adjusting separation.
The ceramic oscillator must be a Murata F23. The use of
other oscillators leads to frequency discrepancies and
spurious oscillations.
Pin 14 is the SNC control input. It uses the S-meter output
from pin 1 to automatically vary the stereo separation with
the input signal strength. It is also possible to reduce noise
resulting from weak stereo signals.
Pin 13 is the HCC control input. It uses the S-meter
output from pin 1 to automatically vary the multiplexer
output high-frequency characteristic with the input signal
strength. The capacitor at pin 12 determines the maximum
attenuation for this band. Too big a capacitance, however,
will degrade music quality and make the audibility
unstable during reception.
Pin 24 is the 19 kHz pilot signal input. Capacitively
couple the 19 kHz component from pin 11 to pin 24.
Pin 25 is the stereo lamp signal. Current flows only for
stereo signals. Leaving the pin open forces monaural
operation.
The VCO always operates during both stereo and monaural
operation.
Pins 15 and 16 are the left- and right-channel outputs. The capacitors at these pins determine the amount of deemphasis —
50 μs using 0.015 μF, and 75 μs using 0.022 μF.
Pin 18 is the pilot cancel signal output. Adjust the variable resistor between pins 17 and 18 to minimize the 19 kHz pilot
signal components in the left- and right-channel outputs for correct channel balance.
10. When adjusting the pilot cancel signal output, connect a 20 kHz lowpass filter (for example, a DIN audio filter) to the
multiplexer output to remove the 38 kHz component and prevent its affect on the process of minimizing the 19 kHz
component.
11. The capacitor connected to pin 34 is used to detect the pilot cancel signal. It should be connected to V
CC
or GND. In the
case of V
CC
, use a capacitor with no DC leakage.
2.
3.
4.
5.
6.
7.
8.
9.
Coil Specifications
Note: The dotted lines in the characteristics diagrams on the following pages represent device operation outside the device
specifications.
frequency
(Toko)
For European markets
C = 100 pF internal
(Toko)
For North American and
Japanese markets
C = 51 pF Internal
For North American and
Japanese markets
C = 51 pF External
(Mitsumi)
For European markets
C = 100 pF External
LA1862M
No. 4092- 16/27
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| LA1862 | Single-Chip Tuner System for Car Stereo |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LA1867NM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Car Radio Single-Chip Tuner System |
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