TPA0102 Datasheet, PDF (27/38 Pages) Texas Instruments – 1.5-W STEREO AUDIO POWER AMPLIFIER

TPA0102
1.5-W STEREO AUDIO POWER AMPLIFIER
SLOS166E – MARCH 1997 – REVISED MARCH 2000
APPLICATION INFORMATION
For example, if the 5-V supply is replaced with a 3.3-V supply (TPA0102 has a maximum recommended V_DD
of 5.5 V) in the calculations of Table 1, then efficiency at 0.5 W would rise from 44% to 67% and internal power
dissipation would fall from 0.62 W to 0.25 W at 5 V. Then for a stereo 0.5-W system from a 3.3-V supply, the
maximum draw would only be 1.5 W as compared to 2.24 W from 5 V. In other words, use the efficiency analysis
to chose the correct supply voltage and speaker impedance for the application.
selection of components
Figure 62 and Figure 63 are a schematic diagrams of a typical notebook computer application circuits.
CFR
RFR
RIR
21 RLINEIN
Right
CIR
NC ^{20 RHPIN}
MUX
–
+
19 RBYPASS
CB
System
Control
11 MUTE IN
9 MUTE OUT
8 SHUTDOWN
Bias, Mute,
Shutdown,
and SE/BTL
MUX Control
6 LBYPASS
NC
RIL
5 LHPIN
4 LLINEIN
Left
MUX
+
–
CIL
CFL
RFL
ROUT+ 22
ROUT – ₁₅
RVDD ₁₈
SE/BTL 14
HP/LINE 16
CS
100 kΩ
VDD
100 kΩ
COUTR
1 kΩ
0.1 µF
LVDD 7 _VDD
LOUT+ 3
LOUT – 10
COUTL
Figure 62. TPA0102 Minimum Configuration Application Circuit
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