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參數資料
| 型號： | OPA1632DG4 |
| 英文描述： | High-Performance, Fully-Differential AUDIO OP AMP |
| 中文描述： | 高性能，全差分音頻運算放大器 |
| 文件頁數： | 9/16頁 |
| 文件大?。?/td> | 489K |
| 代理商： | OPA1632DG4 |
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SBOS286A DECEMBER 2003 REVISED SEPTEMBER 2006
www.ti.com
9
POWER DISSIPATION AND THERMAL
CONSIDERATIONS
The OPA1632 does not have thermal shutdown
protection. Take care to assure that the maximum
junction temperature is not exceeded. Excessive
junction temperature can degrade performance or
cause permanent damage. For best performance and
reliability, assure that the junction temperature does not
exceed +125
°
C.
The thermal characteristics of the device are dictated
by the package and the circuit board. Maximum power
dissipation for a given package can be calculated using
the following formula:
P
Dmax
T
max
T
A
JA
Where:
P
Dmax
is the maximum power dissipation in the
amplifier (W).
T
max
is
the
absolute
temperature ( C).
T
A
is the ambient temperature ( C).
JA
=
JC
+
CA.
JC
is the thermal coefficient from the silicon
junctions to the case ( C/W).
CA
is the thermal coefficient from the case to
ambient air ( C/W).
maximum
junction
For systems where heat dissipation is more critical, the
OPA1632 is offered in an MSOP-8 with PowerPAD.
The thermal coefficient for the MSOP PowerPAD
(DGN) package is substantially improved over the
traditional SO package. Maximum power dissipation
levels are depicted in Figure 5 for the two packages.
The data for the DGN package assumes a board layout
that follows the PowerPAD layout guidelines.
MAXIMUM POWER DISSIPATION
vs AMBIENT TEMPERATURE
40
15
10
85
60
35
Ambient Temperature ( C)
M
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
θ
JA
= 170 C/W for SO8 (D)
θ
JA
= 58.4 C/W for MSOP8 (DGN)
T
= 150 C
No Airflow
SO8 (D) Package
MSOP8 (DGN) Package
Figure 5. Maximum Power Dissipation vs Ambient
Temperature
(1)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OPA1632DGN | 功能描述:音頻放大器 Fully DiffI/O Audio Amp 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 |
| OPA1632DGNG4 | 功能描述:音頻放大器 Fully DiffI/O Audio Amp 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 |
| OPA1632DGNR | 功能描述:音頻放大器 Fully DiffI/O Audio Amp 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 |
| OPA1632DGNRG4 | 功能描述:音頻放大器 Fully DiffI/O Audio Amp 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 |
| OPA1632DR | 功能描述:音頻放大器 Fully DiffI/O Audio Amp 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 |
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