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1998 Apr 01 12
Philips Semiconductors Product specification
2 × 1 W BTL audio amplifier TDA8542
SE APPLICATION
Fig.14 Single-ended application.
handbook, full pagewidth
MBH799
14
V
CC
V
iL
OUTL
−
INL
−
INL
+
OUTL
+
15
100 nF
470 µF
C4
470 µF
C5
100 µF
16 9
18
TDA8542
13
OUTR
−
GND
R
L
R
L
INR
−
11
INR
+
SVR
12
4
3
5
MODE
BTL/SE
2
OUTR
−
OUTR
+
10
7
C3
47 µF
1 µF
1 µF
R1
R2
R4
10 kΩ
10 kΩ
100 kΩ
100 kΩ
R3
V
iR
Gain left
R2
R1
--------
=
Gain right
R4
R3
--------
=
Fig.15 THD as a function of P
o
.
handbook, halfpage
10
1
P
o
(W)
THD
(%)
10
−1
10
−2
MGD899
10
−2
10
−1
1
(1)
(2)
10
(3)
f = 1 kHz, G
v
=20dB.
(1) V
CC
= 7.5 V, R
L
=4Ω.
(2) V
CC
= 9 V, R
L
=8Ω.
(3) V
CC
= 12 V, R
L
=16Ω.
Fig.16 THD as a function of frequency.
P
o
= 0.5 W, G
v
= 20 dB.
(1) V
CC
= 7.5 V, R
L
=4Ω.
(2) V
CC
= 9 V, R
L
=8Ω.
(3) V
CC
= 12 V, R
L
=16Ω.
handbook, halfpage
10
1
THD
(%)
f (Hz)
10
−1
10
−2
MGD900
10 10
2
10
3
10
4
10
5
(1)
(2)
(3)