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參數(shù)資料
| 型號(hào)： | TB2929HQ |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 24 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封裝： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件頁數(shù)： | 12/17頁 |
| 文件大小： | 262K |
| 代理商： | TB2929HQ |
TB2929HQ
2009-01-29
4
2. Mute Function (pin 22)
The audio mute function is enabled by setting pin 22 Low. R1 and C4 determine the time constant of the
mute function. The time constant affects pop noise generated when power or the mute function is turned on
or off; thus, it must be determined on a per-application basis. (Refer to Figures 3 and 4.)
The value of the external pull-up resistor is determined, based on pop noise value.
For example, when the control voltage is changed from 5 V to 3.3 V, the pull-up resistor should be:
3.3 V / 5 V
× 47 kΩ = 31 kΩ
Figure 3 Mute Function
Figure 4 Mute Attenuation
VMUTE (V)
22
1 k
Ω
R1
5 V
Mute On/Off
control
C4
0
120
100
80
60
40
20
0
20
0.5
1
1.5
2
2.5
3
VCC = 13.2 V
f
= 1 kHz
RL = 4 Ω
VO = 20dBm
BW
= 400 Hz to 30 kHz
Pin 22 control voltage: VMUTE (V)
ATT – VMUTE
Mute
at
tenua
tion
ATT
(dB
)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TB2929HQ(O) | 功能描述:音頻放大器 45W x 4-CH class-AB car power amplifer 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 |
| TB2932HQ | 制造商:Toshiba America Electronic Components 功能描述: |
| TB2932HQ(O) | 功能描述:音頻放大器 49W x 4-CH class -AB car power amplifer 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 |
| TB2939HQ(O) | 功能描述:音頻放大器 45W x 4-CHANNEL car power amplifer 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 |
| TB2946HQ(O) | 功能描述:音頻放大器 49W x 4-CH Class-AB car power amplifer 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 |
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