參數(shù)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(shù): 10/26頁
文件大?。?/td> 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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