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參數(shù)資料
| 型號(hào)： | LA4450 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 音頻放大器 |
| 英文描述： | Two Channel Power IC for Bus or Track Use in TV and Home Audio Applications |
| 中文描述： | 雙通道功率軌道客車或使用IC在電視和家用音響應(yīng)用 |
| 文件頁(yè)數(shù)： | 3/7頁(yè) |
| 文件大?。?/td> | 473K |
| 代理商： | LA4450 |
Test Circuit
1. Features and Usage Notes
Pin 12 is the standby pin. The IC operates when a voltage of 2 V or higher is applied through the external resistor
R1. Note that the maximum influx current to pin 12 is 500 μA.
Changing the voltage gain
The voltage gain VG can be lowered by connecting an external resistor in series between the NF pin (pins 8 and
14) and C
NF
.
30 k
75 + R
Nf’
VG = 20 log
However, since the IC may oscillate if VG is 30 dB or lower, use a VG of 36 dB or higher.
The LA4450 includes a thermal protection circuit to prevent damage to or destruction of the IC due to abnormal
overheating. As a result, the output may be attenuated or cut off if the application heat sinking is inadequate.
The LA4450 includes an overvoltage protection circuit to protect the IC against power supply surges and abnormal
voltages. This circuit has hysteresis characteristics: it operates at between 39 and 40 V, and recovers at around 34 V.
Although the LA4450 includes a current limiter circuit to prevent damage due to abnormal currents, care must still
be exercised to prevent load shorts and other excessive current conditions.
No. 4090-3/7
LA4450
Unit (resistance :
, capacitance : F)
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| LA4465 | BTL-OCL 12W AF Power Amp For Car Stereo Use |
| LA4470 | BTL-OCL 20W Power Amp For Car Stereo Use |
| LA4475 | BTL-OCL Power 20W Amp For Car Stereo Use |
| LA4485 | 5 W, Two-channel Power Amplifier with Very Few External Parts |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA4450_10 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Bus and Track in Car Stereo 2-Channel Power Amplifier |
| LA4450-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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4450F-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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4450L-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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4451-E | 制造商:ON Semiconductor 功能描述:AUDIO AMPLIFIER SE 2CH - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / AUDIO AMPLIFIER SE 2CH |
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