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參數資料
| 型號： | LA4629 |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 4.5 W, 2 CHANNEL, AUDIO AMPLIFIER, SFM12 |
| 封裝： | SIP-12 |
| 文件頁數： | 3/6頁 |
| 文件大小： | 101K |
| 代理商： | LA4629 |
LA4629
No.6502-3/6
Block Diagram
ch1 input
amplifier
REF
amplifier
Output
amplifier
ch2 input
amplifier
Standby SW
Pop noise prevention block
Ripple filter
TSD protector
Output
amplifier
Rf1
RNf1
RNf2
Rf2
2
ch1
Output
POWER GND
ch2
Output
VCC
1
12
STBY
7
6
ch1
Input
PRE GND
ch2
Input
9
8
P.P
Filter
3
5
10
Pin Functions
1. Standby switch function (pin 6)
Applied standby
voltage Vx
2k
Ω
2k
Ω
STBY
Rx
+
6
The inflowing current at an
applied voltage of 1.5V, i.e.
the point when the amplifier
turns on, is approximately
750
μA
STBY pin applied voltage: 5V
To hold the pin 6 inflow current to about 750A insert a resistor (Rx) of 4.7k
Ω
STBY pin applied voltage: 12V
To hold the pin 6 inflow current to about 750A insert a resistor (Rx) of 14k
Ω (12kΩ).
STBY pin applied voltage: Other value (Vx)
To hold the pin 6 inflow current to about 750A insert a resistor (Rx) of (Vx - 1.5V)/750A.
If a microcontroller output signal is applied directly, insert a resistor in series and adjust the current to a level
optimal for the drive capability of the microcontroller.
2. Input pins (pins 9 and 10)
The input pin voltage is about 2VBE (1.4V).
The input pin impedance is about 30k
Ω.
Although the recommended value for the input capacitor is 0.22μF, the starting time can be modified by changing the
value of this capacitor. (The time from the point a voltage is applied to the standby pin to the point sound is emitted.)
Input capacitor
1.0
μF
2.2
μF
3.3
μF
4.7
μF
10
μF
Starting time (ts)
0.2s
0.3s
0.5s
0.65s
1.5s
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相關代理商/技術參數 |
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|---|---|
| LA4630 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LA4630N | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:9V/12V 3-Dimension Power IC for Radio Cassette Recorders |
| LA4631 | 制造商:SANYO Semiconductor Co Ltd 功能描述:5W X 2Ch Af Power Amp Sanyo IC 13-Pin SIP-Hs |
| LA4631-E | 功能描述:音頻放大器 2-CH 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 |
| LA4631VC | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:For Home Audio Use 2-Channel SE AF Power Amplifier |
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