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參數資料
| 型號： | LA4508 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 8.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM14 |
| 封裝： | SIP-14 |
| 文件頁數： | 3/7頁 |
| 文件大?。?/td> | 267K |
| 代理商： | LA4508 |
LA4508
No.1440–3/7
Sample Printed Circuit Pattern (Cu-foiled area)
Description of External Parts
C1 :
Decoupling capacitor
Used for the ripple filter. Since the rejection effect is saturated at a certain capacity, it is meaningless to
increase the capacity more than needed. This capacitor, being also used for the time constant of the pop
noise preventer, affects the starting time. Too small a capacity makes the pop noise level higher.
(Recommended value : 100
F to 330F)
C2 (C3) :
Feedback capacitor
Since the low cutoff frequency depends on this feedback capacitor, the required bandwidth must be
considered before determining the value of this feedback capacitor. This feedback capacitor also affects
the starting time.
C4 (C5) :
Switching distortion suppressing capacitor
Used to suppress switching distortion which often appears at high frequencies in overinput mode. The
recommended value is 0.01
F (ceramic capacitor).
C6 (C7) :
Bootstrap capacitor
The output at low frequencies depends on this capacitor. If the capacity is decreased, the output at low
frequencies goes lower. 47
F min. is required. (This, however, does not apply if load R
L is light.)
C8 (C9) :
Output capacitor
The low cutoff frequency depends on this output capacitor. (Refer to the characteristic graph.)
C10 (C11) :
Oscillation blocking capacitor
Polyester film capacitor, being excellent in temperature characteristic, frequency characteristic, is used.
The use of an aluminum electrolytic capacitor or ceramic capacitor may cause oscillation to occur at
low temperatures.
C12 :
Power source capacitor.
This power source capacitor must accomodate loads (motor, etc.) in the power line or ripple in the
transformer ouput. This recommended value is 1000
F to 2200F.
Continued on next page.
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| LA4533M | 0.04 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LA45-1 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Cascadable Amplifier 1000 to 4000 MHz |
| LA4510 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:240MW AF Power Amplifier |
| LA451-2-WH | 制造商:Carling Technologies 功能描述:L SLIDE SWITCH - Bulk |
| LA4520 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA4525 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Dual AF Power Amplifier for Radio Cassette Recorders |
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