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參數資料
型號: TPA301DGNRG4
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: 11/28頁
文件大小: 765K
代理商: TPA301DGNRG4
www.ti.com
TPA301
SLOS208E – JANUARY 1998 – REVISED JUNE 2004
Converting dB back into watts:
PW = 10
PdB/10
= 11 mW (15 dB headroom)
= 22 mW (12 dB headroom)
= 44 mW (9 dB headroom)
= 88 mW (6 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 350 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 TPA301 and
maximum ambient temperatures is shown in Table 2.
Table 2. TPA301 Power Rating, 5-V, 8-
, BTL
MAXIMUM AMBIENT
PEAK OUTPUT
AVERAGE OUTPUT
POWER DISSIPATION
TEMPERATURE
POWER
(mW)
0 CFM
350
350 mW
600
46
°C
350
175 mW (3 dB)
500
64
°C
350
88 mW (6 dB)
380
85
°C
350
44 mW (9 dB)
300
98
°C
350
22 mW (12 dB)
200
115
°C
350
11 mW (15 dB)
180
119
°C
Table 2 shows that the TPA301 can be used to its full 350-mW rating without any heat sinking in still air up to
46
°C.
19
相關PDF資料
PDF描述
TPA301DG4 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TPA301DGNG4 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TPA301DRG4 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TPA302DRG4 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
TPA302DG4 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
相關代理商/技術參數
參數描述
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TPA301DRG4 功能描述:音頻放大器 0.35-W Mono Audio Power Amplifier 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
TPA301EVM 功能描述:音頻 IC 開發工具 TPA301 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
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TPA302_07 制造商:TI 制造商全稱:Texas Instruments 功能描述:300-mW STEREO AUDIO POWER AMPLIFIER
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