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1998 Apr 01 9
Philips Semiconductors Product specification
2 × 1 W BTL audio amplifier TDA8542
BTL APPLICATION
Fig.3 BTL application.
handbook, full pagewidth
MBH798
14
V
CC
V
iL
OUTL
−
INL
−
INL
+
OUTL
+
15
100 nF 100 µF
16 9
18
TDA8542
13
OUTR
−
GND
R
L
INR
−
11
INR
+
SVR
12
4
3
5
MODE
BTL/SE
2
OUTR
−
OUTR
+
10
R
L
7
C3
47 µF
1 µF
1 µF
R1
R2
R4
10 kΩ
10 kΩ
50 kΩ
50 kΩ
R3
V
iR
Gain left 2
R2
R1
--------
×=
Gain right 2
R4
R3
--------
×=
Fig.4 I
q
as a function of V
CC
.
RI = ∞.
handbook, halfpage
0
I
q
(mA)
V
CC
(V)
20
30
10
0
420
81216
MGD890
Fig.5 THD as a function of P
o
.
f = 1 kHz, G
v
=20dB.
(1) V
CC
= 5 V, R
L
=8Ω.
(2) V
CC
= 9 V, R
L
=16Ω.
handbook, halfpage
10
1
THD
(%)
10
−2
10
−1
MGD891
10
−2
10
−1
1
P
o
(W)
10
(1)
(2)