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參數資料
| 型號： | TPA6030A4PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO28 |
| 封裝： | GREEN, PLASTIC, TSSOP-28 |
| 文件頁數： | 16/32頁 |
| 文件大小： | 698K |
| 代理商： | TPA6030A4PWPG4 |
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TPA6030A4
SLOS395B DECEMBER 2002 REVISED JANUARY 2005
www.ti.com
23
Equation 12 represents the power drawn from the supply during mono operation. For stereo operation, the first term of
equation 12 is doubled while the second term in the equation, quiescent power, does not change.
Equation 13 represents the power drawn from the supply during stereo operation.
PSUP(stereo) +
4VCCVP
pRL
) VCC ICC(q)
Substituting PL and PSUP into equation 10:
hBTL(stereo) +
2PL
4VCCVP
pRL
) VCC ICC(q)
Note the factor of 2 in the numerator for stereo operation.
Recall that:
hBTL(stereo) +
2p PL RL
4VCC 2PL ) VCC ICC(q) p RL
+
2p PL RL
4VCCVP ) VCC ICC(q) pRL
VP + 2PL RL
therefore,
For SE operation, the current waveform is halfwave rectified. Therefore, ICCavg must be recalculated.
In an SE system:
ICCavg +
1
p
2
0
VP
RL
sin(t) dt +*
VP
pRL
[cos(t)]
p
2
0
+
VP
p RL
therefore,
PSUP +
VCCVP
p RL
) VCC ICC(q)
Stereo operation has the same effect in SE as it does in BTL when doubling the first term of the equation dealing with power
drawn from the supply (equation 16).
PSUP(stereo) +
2VCCVP
p RL
) VCC ICC(q)
Following the same steps for SE operation as in BTL operation:
hSE(stereo) +
2PL
2VCCVP
p RL
) VCC ICC(q)
+
2p PL RL
2VCCVP ) VCC ICC(q) pRL
Recall that:
hSE(stereo) +
2p PL RL
2VCC 2PL ) VCC ICC(q) p RL
VP + 2PL RL
therefore,
(13)
(14)
(15)
(16)
(17)
(18)
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相關代理商/技術參數 |
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| TPA6030A4PWPR | 功能描述:音頻放大器 Wide Supply Voltage Low Power Class-AB 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 |
| TPA6030A4PWPRG4 | 功能描述:音頻放大器 Wide Supply Voltage Low Power Class-AB 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 |
| TPA6040A4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR |
| TPA6040A4EVM | 功能描述:音頻 IC 開發工具 TPA6040A4 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA6040A4RHB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR |
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