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參數(shù)資料
| 型號(hào)： | LA42072 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 7 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| 封裝： | SIP-13 |
| 文件頁(yè)數(shù)： | 4/5頁(yè) |
| 文件大?。?/td> | 237K |
| 代理商： | LA42072 |
LA42072
No.A0315-4/5
External Components
C1,C2
: Input coupling capacitors, which are recommended to be 4.7
F or less. The input circuit is of a zero bias
type, so that the input pin potential is close to zero volts. Therefore, the polarity must be determined
depending on the DC potential of a circuit connected in the previous stage of LA42072.
C3
: Capacitor for the starting time of ripple filter and amplifier, which is recommended to be 47
F.
C4,R1
: Capacitor and resistor for muting. C4 is necessary even when no muting function is provided.
C5
: Power supply capacitor.
C6 to C9
R2 to R5
: Capacitors and resistors for prevention of oscillation. For C6 to C9, polyester film capacitors. and having
satisfactory temperature characteristics are recommended. Uses 2.2
resistor together.
1. Muting function (Pin 6)
Mute ON when the voltage of pin 6 is 1.7V (min) or more.
Set the VM application voltage so that the voltage of pin 6 becomes 1.7V or more.
The time constant of mute is determined with R1 and C4. The constant must be determined after review because it is
concerned with the pop sound at mute ON/OFF. C4 is concerned with the pop sound also when the amplifier is turned
ON, so that this is necessary even when the mute function is not used.
Example: The voltage of pin 6 becomes about 1.8V under conditions of VM = 5V and R1 = 15k.
2. Standby function (Pin 5)
The amplifier is turned ON when the voltage of 2.5V (min) or more is applied to pin 5.
Control Voltage of pin 5
Pin 5 voltage
Amplifier
Standby
0 to 0.5V
OFF
ON
2.5 to 20V
ON
OFF
To suppress 5 pin inflow current when the impressed voltage of
VSTB is high, limitation resistance (RSTB) is inserted.
Example: Limiting the inrush current to pin 5 to 500A or less
Application voltage (VSTB) 2VBE(about 1.4V)
RSTB=
15k
500A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LA42101 | 10 W, 1 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| LA42101 | 10 W, 1 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| LA42102 | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| LA42102 | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| LA42105 | 5 W, 1 CHANNEL, AUDIO AMPLIFIER, ZFM15 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA42072N-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA42072NL-KF-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA4210 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA42101 | 制造商:SANYO Semiconductor Co Ltd 功能描述: |
| LA42102 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Audio Output for TV application 10W 】 2ch Power Amplifier |
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