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參數資料
| 型號： | LA42052 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 5 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| 封裝： | SIP-13 |
| 文件頁數： | 4/7頁 |
| 文件大小： | 85K |
| 代理商： | LA42052 |
LA42052
No.A0314-4/7
External Components
C1, C2 : Input coupling capacitors, which are recommended to be 1.0
μF or less.
The input pin voltage 2VBE ( about 1.4V).
Determine the polarity orientation of these capacitors based on the DC current from the circuit
connected to the LA42052 front end.
C3
: The recommended value for the Ripple filter capacitor is 100
μF.
C4
: The recommended value for the P.P capacitor 4.7
μF. It is a capacitor for there being small Pop sound.
C5
: Power supply capacitor.
C6, C7 : The recommended value for the output capacitor is 470
μF.
1. Standby Function (Pin 5)
By means of controlling pin 5 to high and low, the power
Supply can be set to ON and OFF.
Control Voltage of pin 5
Pin 5 voltage
Amplifier
Standby
0 to 0.5
OFF
ON
1.0 to 5.0
ON
OFF
When the impression voltage of VS is high,
I want to stop 5 pin inflow current.
Restriction resistance (RSTB) is inserted in a case.
VS = 5V, RSTB = 5.1kΩ
5 pin inflow current = about 750A
5 pin voltage = about 1.2V
2. Ripple filter and Mute function (Pin 1)
Pin voltage is approx. 1/2 VCC
The recommended value for the Ripple filter capacitor is 100F.
Muting :
The output signal can be controlled by connecting pin 1(Ripple filter) to ground via a resistance of 300 to 500
Ω.
If resistance is higher than 750
Ω, the suppression ratio will decrease.
3. Input Pin (Pin 2,4)
Voltage at the input pins is approx. 2VBE(about 1.4V)
Determine the polarity orientation of these capacitors based on the DC current from the circuit
Connected to the LA42052 front end.
Input resistance is approx. 30k
Ω (typ)
The recommended value for the input capacitor is 1.0F.
4. P.P (Pin 6)
The Pin 6 is Terminal for there being small pop sound
at the time of power supply ON/OFF.
C4 recommends 4.7F.
When capacitance is higher 10F, the sound will not
be cut off when setting the power supply OFF.
Pin 6 voltage =
VCC – VCE (about 0.3V) – 5.6V
2
+5.6V
5
RSTB
2k
Ω
VS
2k
Ω
+
6
C4
4.7
μF
VCC
5k
Ω
5k
Ω
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| LA42072 | 7 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM13 |
| LA42101 | 10 W, 1 CHANNEL, AUDIO AMPLIFIER, SFM13 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LA42052-E | 功能描述:音頻放大器 POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 產品: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 |
| LA42052HK-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LA42071 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Audio Output for TV Application 5W×1ch Power Ampilfier |
| LA42072 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC 5W 2-Channel AF Power Amplifier With DC Volume Control |
| LA42072N-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
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