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參數資料
| 型號： | TS4995EIJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2 W, 1 CHANNEL, AUDIO AMPLIFIER, PBGA9 |
| 封裝： | LEAD FREE, FCP-9 |
| 文件頁數： | 10/26頁 |
| 文件大小： | 440K |
| 代理商： | TS4995EIJT |
Application information
TS4995
18/26
Figure 56.
-3 dB lower cut-off frequency vs. input capacitance
4.4
Power dissipation and efficiency
Assumptions:
●
Load voltage and current are sinusoidal (Vout and Iout)
●
Supply voltage is a pure DC source (VCC)
The output voltage is:
and
Therefore, the average current delivered by the supply voltage is:
Equation 1
The power delivered by the supply voltage is:
Equation 2
Psupply = VCC IccAVG (W)
0.5
1
10
100
Typical Input
Impedance
Maximum Input
Impedance
Minimum Input
Impedance
All gain setting
Tamb=25
°C
L
o
w
-3dB
C
u
tO
ff
Freq
uency
(H
z
)
Input Capacitor Cin (
μF)
0.1
V
out = Vpeak sinωt (V)
I
out =
V
out
R
L
------------- (A)
P
out =
V
peak
2
2R
L
--------------------- (W)
Icc AVG = 2
V
peak
πR
L
----------------- (A)
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