参数资料
型号: TS4956EIKJT
厂商: STMICROELECTRONICS
元件分类: 音频/视频放大
英文描述: 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18
封装: ROHS COMPLIANT, FCP-18
文件页数: 32/52页
文件大小: 1709K
代理商: TS4956EIKJT
TS4956
Application information
38/51
and its value is:
Note:
This maximum value depends only on power supply voltage and load values.
The efficiency is the ratio between the output power and the power supply:
The maximum theoretical value is reached when VPEAK = VCC/2, so
4.3.2
Phantom ground output configuration (modes 3, 4):
The average current delivered by the supply voltage is:
Figure 127. Current delivered by supply voltage in the phantom ground output
configuration
The power delivered by supply voltage is:
Then, the power dissipation by each amplifier is
and the maximum value is obtained when:
and its value is:
Note:
This maximum value depends only on the power supply voltage and load values.
P
diss
MAX
V
CC
2
π
2
R
L
------------- W
()
=
η
P
out
P
sup ply
-------------------
πV
PEAK
2V
CC
---------------------
==
η
π
4
---
78.5%
==
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
ou t W
()
=
P
out
P
diss
0
=
P
diss
MA X
2V
CC
2
π
2
R
L
---------------W
()
=
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