Philips TDA8922, Техническое описание

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2003 Mar 20 24
Philips Semiconductors Objective specification
2
×
25 W class-D power amplifier TDA8922
handbook, halfpage
MGX332
Pdiss
(W)
2
0
4
8
6
10
(1)
(2)
(3)
Po (W)
10
−
2
10
−
1
1 10 10
2
Fig.18 Power dissipation as a function of output
power.
f
i
= 1 kHz.
(1) 2
×
4
Ω
SE, V
P
=
±
15 V.
(2) 2
×
8
Ω
SE, V
P
=
±
20 V.
(3) 1
×
8
Ω
BTL, V
P
=
±
15 V.
handbook, halfpage
η
(%)
0 60 20 80 100
Po (W)
40
0
100
60
80
20
40
MGX333
(1)
(2)
(3)
Fig.19 Efficiency as a function of output power.
f
i
= 1 kHz.
(1) 2
×
8
Ω
SE, V
P
=
±
20 V.
(2) 2
×
4
Ω
SE, V
P
=
±
15 V.
(3) 1
×
8
Ω
BTL, V
P
=
±
15 V.
handbook, halfpage
Po
(W)
10 25 15 30 35
VDD (V)
20
0
100
60
80
20
40
MGX336
(1)
(2)
(3)
Fig.20 Output power as a function of supply
voltage.
THD + N = 0.5%; f
i
= 1 kHz.
(1) 1
×
8
Ω
BTL.
(2) 2
×
4
Ω
SE.
(3) 2
×
8
Ω
SE.
handbook, halfpage
Po
(W)
10 25 15 30 35
VDD (V)
20
0
100
60
80
20
40
MGX337
(1)
(2)
(3)
Fig.21 Output power as a function of supply
voltage.
THD + N = 10%; f
i
= 1 kHz.
(1) 1
×
8
Ω
BTL.
(2) 2
×
4
Ω
SE.
(3) 2
×
8
Ω
SE.