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參數(shù)資料
| 型號： | TS4956EIKJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| 封裝： | ROHS COMPLIANT, FCP-18 |
| 文件頁數(shù)： | 33/52頁 |
| 文件大?。?/td> | 1709K |
| 代理商： | TS4956EIKJT |
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TS4956
Application information
39/51
The efficiency is the ratio between the output power and the power supply:
The maximum theoretical value is reached when VPEAK = VCC/2, so
The TS4956 has in modes 3 and 4 two active output power amplifiers. Each amplifier
produces heat due to its power dissipation. Therefore the maximum die temperature is the
sum of each amplifier’s maximum power dissipation. It is calculated as follows:
Pdiss 1 = power dissipation due to the first power amplifier.
Pdiss 2 = power dissipation due to the second power amplifier.
Total Pdiss =Pdiss 1 +Pdiss 2 (W)
In most cases,
Pdiss 1 =Pdiss 2, giving:
4.3.3
BTL output configuration (modes 1, 2, 7):
The average current delivered by the supply voltage is:
Figure 128. Current delivered by supply voltage in the BTL output configuration
The power delivered by supply voltage is:
Then, the power dissipation by each amplifier is
η
P
out
P
su pply
-------------------
πV
PEAK
4V
CC
---------------------
==
η
π
8
---
39.25%
==
TotalP
diss
2P
diss1
=
TotalP
diss
42VCC
π R
L
---------------------- P
out
2P
ou t W
()
–
=
Icc
AVG
1
π
---
V
PEAK
R
L
-----------------
t
()
sin
t
d
0
π
∫
2V
PEAK
πR
L
---------------------A
()
==
P
sup ply
V
CCICC
AV G
W
()
=
P
diss
22 VCC
π R
L
---------------------- P
ou t
P
out W
()
–
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS4956EKIJT | 1.06 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18 |
| TS4961TIQT | 1.5 W, 1 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| TS4962EIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EIKJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| TS4962EKIJT | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS4961TIQT | 功能描述:音頻放大器 MONO CLASS D AUDIO PWR AMP 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 |
| TS4962 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8W filter-free mono class D audio power amplifier |
| TS4962_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.8 W filter-free mono class D audio power amplifier |
| TS4962EIJT | 制造商:STMicroelectronics 功能描述:AUD AMP SPKR 1CH MONO 2W CLS-D 9PIN FLIP-CHIP - Tape and Reel |
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