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參數(shù)資料
| 型號： | AN12941A |
| 廠商： | PANASONIC CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | The AN12941A is an amplifier IC for stereo speakers which can output 1 W by 8 Ohm or 2 W by 4 Ohm |
| 中文描述： | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO56 |
| 封裝： | 0.300 INCH, LEAD FREE, PLASTIC, HSOP-56 |
| 文件頁數(shù)： | 22/41頁 |
| 文件大?。?/td> | 5959K |
| 代理商： | AN12941A |
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AN
12941
A
22
SDC
00056
AEB
■
Application Notes (continued)
5
. Speaker amplifier circuit block
DC shift circuit
1
) Shift circuit operating point of signal (bias voltage at a no signal) from V
REF
to V
REF
_SP.
DC voltage (speaker output) of output becomes V
REF
_SP.
Speaker amplifier
1
) Speaker amplifier is BTL amplifier system of
2
-channel.
10 dBV
50 k
50 k
0 dB
0 dB
0 dB
V
REF
Out-L (SP)
Out-R (SP)
4
to 8
4
to 8
10 dBV
0 dB
0 dB
0 dB
V
REF
Power save
Power save
DC shift
DC shift
Muted in sync with power save
of speaker amplifier.
An operating point is shifted from
V
REF
to V
REF
_SP.
41
30
31
33
32
16
43
14
26
27
24
25
6
. Control order at power supply on/off chcange
Power supply on
When switching power on, it is recommended to use a speaker amplifier during a transient period from power
on till a stable condition of a circuit to ensure that a circuit start up smoothly by protecting from any shock
noise of a speaker circuit.
1
) Control order
1
. Power supply (V
CC
_SP, V
CC
): Change off to on
2
. Standby control: Change on to off
3
. Speaker amplifier power save control: Change on to off
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| AN12943A | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Audio signal processing IC for notebook PC |
| AN12948A | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:Audio Power IC for Note PC |
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| AN12969A | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:I2C bus control compatible AGC built-in stereo BTL amplifier IC |
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