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
VCC
ViL
OUTL
−
INL
−
INL
+
OUTL
+
15
100 nF
100
µ
F
16
9
1
8
TDA8542
13
OUTR
−
GND
RL
INR
−
11
INR
+
SVR
12
4
3
5
MODE
BTL/SE
2
OUTR
−
OUTR
+
10
RL
7
C3
47
µ
F
1
µ
F
1
µ
F
R1
R2
R4
10 k
Ω
10 k
Ω
50 k
Ω
50 k
Ω
R3
ViR
Gain left
2
R2
R1
--------
×
=
Gain right
2
R4
R3
--------
×
=
Fig.4 I
q
as a function of V
CC
.
RI =
∞
.
handbook, halfpage
0
Iq
(mA)
VCC (V)
20
30
10
0
4
20
8
12
16
MGD890
Fig.5 THD as a function of P
o
.
f = 1 kHz, G
v
= 20 dB.
(1) V
CC
= 5 V, R
L
= 8
Ω
.
(2) V
CC
= 9 V, R
L
= 16
Ω
.
handbook, halfpage
10
1
THD
(%)
10
−
2
10
−
1
MGD891
10
−
2
10
−
1
1
Po (W)
10
(1)
(2)
