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參數資料
| 型號： | LA4270 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 6 W, 2 CHANNEL, AUDIO AMPLIFIER, PSIP10 |
| 封裝： | HEAT SINK, SIP-10 |
| 文件頁數： | 6/10頁 |
| 文件大小： | 565K |
| 代理商： | LA4270 |
LA4270
No.1724-5/10
2. Application of positive bias to NF pins.
Muting can be provided by positive bias applied to
the NF pins. In this case, the R value must be determined
so that the potential at the NF pins (pins 1, 6) does not
exceed 3V at the muting mode.
Voltage Gain
The voltage gain is fixed to 40dB by the ratio of on-chip
resistors 30k
Ω and 300Ω. It is impossible to use the IC at
a voltage gain greater than this. In an application where the
IC is used at a voltage gain of less than 40dB, resistors are
connected in series with feedback resistors as shown right.
In this application, however, oscillation is liable to occur. So,
the voltage gain must not be less than 30dB.
Sample Application Circuit 2 : Bridge amplifier use
+
2
1
4
8
7
3
9
10
6
5
IN
VCC
+
4.7
μF
CH-1
CH-2
4.7
μF
0.1
μF
0.1
μF
2.2
Ω
2.2
Ω
15k
Ω
300
Ω
300
Ω
RL
8 to 16
Ω
100
μF
100
μF
100
μF/25V
1000
μF/25V
1000
μF/35V
1000
μF/25V
* : Polyester film capacitor
*
In this application, output capacitors must be used. Since the IC handles an apparent load of 4
Ω, more distortion results,
making it impossible for the IC to deliver power at THD = 1% as in 2-channel use. It is possible for the IC to deliver
power at THD = 5% or 10%
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| LA4275 | 6 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM7 |
| LA4275 | 6 W, 1 CHANNEL, AUDIO AMPLIFIER, PSFM7 |
| LA4276 | 3 W, 2 CHANNEL, AUDIO AMPLIFIER, PSFM10 |
| LA4277 | 5 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM10 |
| LA4278 | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM10 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LA4275 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:6.0 W AF Power Amplifier for Home Stereo, TV Use |
| LA4276 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:3 W 2-Channel Power Amplifier |
| LA4277 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:5 W 2-Channel Power Amplifier |
| LA4277-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA4278 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:10 W 2-Channel Power Amplifier |
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