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參數(shù)資料
| 型號： | TPA721DGNR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大?。?/td> | 663K |
| 代理商： | TPA721DGNR |
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TPA721
SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004
Converting dB back into watts:
PW = 10
PdB/10
= 22 mW (15-dB headroom)
= 44 mW (12-dB headroom)
= 88 mW (9-dB headroom)
= 175 mW (6-dB headroom)
= 350 mW (3-dB headroom)
This is valuable information to consider when attempting to estimate the heat dissipation requirements for the
amplifier system. Comparing the absolute worst case, which is 700 mW of continuous power output with 0 dB of
headroom, against 12-dB and 15-dB applications drastically affects maximum ambient temperature ratings for
the system. Using the power dissipation curves for a 5-V, 8-
system, the internal dissipation in the TPA721 and
maximum ambient temperatures is shown in Table 2.
Table 2. TPA721 Power Rating, 5-V, 8-
BTL
D PACKAGE
DGN PACKAGE
(SOIC)
(MSOP)
PEAK OUTPUT
AVERAGE
POWER
OUTPUT
DISSIPATION
MAXIMUM AMBIENT
(mW)
POWER
(mW)
TEMPERATURE
(0
° CFM)
(0
° CFM)
700
700 mW
675
34
°C
110
°C
700
350 mW (3 dB)
595
47
°C
115
°C
700
176 mW (6 dB)
475
68
°C
122
°C
700
88 mW (9 dB)
350
89
°C
125
°C
700
44 mW (12 dB)
225
111
°C
125
°C
Table 2 shows that the TPA721 can be used to its full 700-mW rating without any heat sinking in still air up to
110
°C and 34°C for the DGN package (MSOP) and D package (SOIC), respectively.
18
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PDF描述 |
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| TPA721DR | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA721DG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA721DGNG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA721DGNRG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA721DRG4 | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA721DGNRG4 | 功能描述:音頻放大器 Mono Class-AB w/Active HIgh Shtdwn 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 |
| TPA721DR | 功能描述:音頻放大器 700mW Lw V Audio 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 |
| TPA721DRG4 | 功能描述:音頻放大器 Mono Class-AB w/Active HIgh Shtdwn 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 |
| TPA721EVM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER |
| TPA721MSOPEVM | 功能描述:音頻 IC 開發(fā)工具 TPA721MSOP Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
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