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參數(shù)資料
| 型號： | LA3410 |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO DEMODULATOR, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 449K |
| 代理商： | LA3410 |
LA3410
No.1407–7/13
(4) When C9 is decreased, the capture range will
widen but the stereo main distortion at f=10kHz
will worsen (beat distortion). This data is shown
in Fig. 4-E. Set C2 so that the stereo distortion
is kept rather low.
(5) The data on pilot level vs. capture range is
shown in Fig. 4-F to G. It is necessary to set the
loop filter constants, with the input pilot level
considered, so that the capture range becomes
wide. For example, when the LA1260 is used
for IF IC, the minimum demodulation output
will be 183mV (100% mod) and the stereo op-
eration must be performed at pilot level 12mV
with a pilot margin allowed. In this case,
C2=0.1
F, R1=6.8 to 10k are recommended.
5. Improvement in sub, stereo (R) distortions worsened at low frequencies.
There are some cases where the sub, stereo (R) distortions are worsened
at low frequencies. One cause for this worsening is the phase shift be-
tween 38kHz and 19kHz in the flip-flop inside the IC. This shift is im-
proved by connecting a phase compensating capacitor across pin 3 and
GND as shown in Fig. 5. The CD value differs with each IF (the phase
shift between the sub signal and pilot signal in the composite signal
differs with each IF). An adequate value is 200 to 1500pF.
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相關代理商/技術參數(shù) |
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| LA3430 | 制造商:Panasonic Industrial Company 功能描述:IC |
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| LA3430M-UDEL-AE | 制造商:Sony Semiconductor Solutions Division 功能描述: |
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