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參數(shù)資料
| 型號： | LA4620 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 17 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM23 |
| 封裝： | SIP-23 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 244K |
| 代理商： | LA4620 |
LA4620
No.3607–7/8
Sample Printed Circuit Pattern
Note
Board size :
125
× 85mm
Surface finish :
Copper foil
Design Notes
Input Capacitors
C1 and C4 are input coupling capacitors. They should
both be 4.7
F or less.
Feedback Capacitors
C2 and C5 from the negative feedback network. They
sould both be between 47 and 100
F.
Supply Decoupling Capacitor
C7 should be 100
F.
Supply Ripple Filter Capacitors
C8 and C14 smooth the supply voltage. Both should be at
least 1,000
F, and one of at least 2,000 F can be used.
Startup Time Capacitor
C9 determines the amplifier startup time.
Bootstrapping Capacitors
C10, C13, C15 and C18 improve the device linearity for
a wide range of input signals. These capacitors should be
between 47
F and 100F to improve the low-frequency
response.
Oscillation Suppression
The R1 and C3, and R2 and C6 networks suppress
oscillation. Use ceramic or mylar capacitors of 0.1
F or
more. Avoid using very large capacitances as these can
cause high-frequency distortion.
C11, C12, C16, and C17 from RC networks with R4, R5,
R6 and R7, respectively. Use mylar capacitors of 33nF or
more to prevent instability caused by circuit board layout.
Standby Control Current Limiting Resistor
R3 limits the current applied to STANDBY SW. It should
be 10
or more.
Heatsinking
The LA4620 should always be operated with a heatsink.
If the heatsink does not provide adequate thermal dissipa-
tion, the thermal protection circuit will attenuate the
signal level when the device overheats to prevent long-
term thermal stress.
Short-circuit Protection
If outputs can be shorted either to ground or the supply,
use an external circuit to protect the device as shown in
the following figure.
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|---|---|
| LA4625 | 13.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM14 |
| LA4625 | 13.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM14 |
| LA4627N | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP12 |
| LA4627 | 2.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PDIP12 |
| LA4628 | 30 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM14 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LA4625 | 制造商:Panasonic Industrial Company 功能描述:IC |
| LA4625_08 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-channel 13.5W BTL Audio Power Amplifier |
| LA4625_10 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-channel 13.5W BTL Audio Power Amplifier |
| LA4625-E | 功能描述:音頻放大器 2-CH POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4625-P-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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