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TS4995 数据表(PDF) 18 Page - STMicroelectronics

部件名 TS4995
功能描述  1.2 W fully differential audio power amplifier with selectable standby and 6 dB fixed gain
PDF  26 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS4995 数据表(HTML) 18 Page - STMicroelectronics

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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
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
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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