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参数资料
| 型号： | LA42031 |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 5 W, 1 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| 封装： | SIP-13 |
| 文件页数： | 4/7页 |
| 文件大小： | 76K |
| 代理商： | LA42031 |
LA42031
No.A0394-4/7
External Components
C1
: The input coupling capacitors, for which 4.7
μF or less is recommended. LA42031 employs the zero-bias type
input circuit, with the input pin potential being nearly zero (about 0.01V). Accordingly, the polarity must be
determined according to the DC potential of a circuit connected to the previous stage of LA42031.
C2
: Capacitor for starting time of the ripple filter and amplifier, for which 47
μF is recommended.
C3, R1
: Capacitor and resistor for mute. C3 is necessary even when the mute function is not used.
C4
: Power capacitor.
C5, C6
: Capacitor and resistor for oscillation prevention. For C5, C6, the polyester film capacitor with superior
R2, R3
temperature characteristics (Mylar capacitor) is recommended. Use R2, R3 of 2.2
Ω along with the capacitor.
1. Mute function (pin 6)
With the pin 6 voltage of 1.7V (minimum) or more, the mute function is turned ON.
Set the VM application voltage so that the pin 6 voltage becomes. 1.7V or more.
The mute time constant is determined by R1 and C3. Determine the constant after careful review because it is related
to the pop sound at mute ON/OFF.
C3 is necessary even when the mute function is not used because it is related to the pop sound when the amplifier is
turned ON.
Note that the MUTE pin (pin 6) incorporates the anti-static
diodo and that decrease of the VCC pin 7 potential below that of
pin 6 causes the current to flow through the diode.
2. Standby function (pin 5)
The amplifier is turned ON when the voltage of 2.5V (minimum) or more is applied to pin 5.
Pin 5 control voltage
Pin 5 voltage
Amplifier
Standby
0 to 0.5
OFF
ON
2.5 to 15
ON
OFF
To suppress the inrush current to pin 5 when the VSTB
application voltage is high, insert the control resistor (RSTB).
Example : Tosuppress the pin 5 inrush current to 500
μA or less
RSTB =
Applied voltage (VSTB) -2VBE (About 1.4V)
500
μA
-15k
Ω
Note that the standby pin (pin 5) incorporates the anti-electrostatic diode, allowing the cu orrent to flow through the
diode when the potential of VCC pin 7 decreases below that of pin 5.
Mute
Standby
+
6
C3
10
μF
R1
2k
Ω
2k
Ω
VCC
VM
20k
Ω
5
RSTB
1.5k
Ω
15k
Ω
VCC
2VBE
VS
30k
Ω
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LA42031-E | 功能描述:音频放大器 POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LA42032 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Linear IC Audio Output for TV application 5W 】 2ch Power Amplifier |
| LA42032-E | 功能描述:音频放大器 POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LA42032L-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA42051 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Audio Output for TV Application 5W×1ch Power Ampilfier |
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