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參數(shù)資料
| 型號(hào)： | TB2906HQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件頁(yè)數(shù)： | 16/18頁(yè) |
| 文件大?。?/td> | 370K |
| 代理商： | TB2906HQ |
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TB2906HQ
2006-04-28
7
6.
Pop Noise Suppression
Since the AC-GND pin (pin 16) is used as the NF pin for all amps, the ratio between the input
capacitance (C1) and the AC-to-GND capacitance (C6) should be 1:4.
Also, if the power is turned OFF before the C1 and C6 batteries have been completely charged, pop noise
will be generated because of the DC input unbalance.
To counteract the noise, it is recommended that a longer charging time be used for C2 as well as for C1
and C6. Note that the time which audio output takes to start will be longer, since the C2 makes the muting
time (the time from when the power is turned ON to when audio output starts) is fix.
The pop noise which is generated when the muting function is turned ON/OFF will vary according to the
time constant of C4.
The greater the capacitance, the lower the pop noise. Note that the time from when the mute control
signal is applied to C4 to when the muting function is turned ON/OFF will be longer.
7.
External Component Constants
Effect
Component
Name
Recommended
Value
Purpose
Lower than recommended
value
Higher than recommended
value
Notes
C1
0.22
F
To eliminate DC
Cut-off frequency is
increased
Cut-off frequency is reduced
Pop noise is
generated when
VCC is ON
C2
10
F
To reduce ripple
Powering ON/OFF is faster
Powering ON/OFF takes
longer
C3
0.1
F
To provide
sufficient
oscillation margin
Reduces noise and provides sufficient oscillation margin
C4
1
F
To reduce pop
noise
High pop noise. Duration until
muting function is turned
ON/OFF is short
Low pop noise. Duration until
muting function is turned
ON/OFF is long
C5
3900
F
Ripple filter
Power supply ripple filtering
C6
1
F
NF for all outputs
Pop noise is suppressed when C1:C6
= 1:4
Pop noise is
generated when
VCC is ON
Note6:
If recommended value is not used.
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| TB2921AHQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TB2913HQ | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Maximum Power 47 W BTL 】 4-ch Audio Power IC |
| TB2915AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:IC AMP BTL AUDIO 45W 4CH HZIP25 |
| TB2915HQ(O) | 功能描述:音頻放大器 45W x 4-CH high-EFF car power amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TB2921HQ(O) | 功能描述:音頻放大器 50W x 4-CH class-AB car power amp RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TB2922HQ | 制造商:Toshiba 功能描述:Pure complementary P-ch & N-ch DMOS output stage, BTL output form |
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