Philips TDA8542, Техническое описание

Страница: 13 / 20

1998 Apr 01 13
Philips Semiconductors Product specification
2
×
1 W BTL audio amplifier TDA8542
Fig.17 Channel separation as a function of
frequency.
V
o
= 1 V, G
v
= 20 dB.
(1) V
CC
= 5 V, R
L
= 32
Ω
, to buffer.
(2) V
CC
= 7.5 V, R
L
= 4
Ω
.
(3) V
CC
= 9 V, R
L
= 8
Ω
.
(4) V
CC
= 12 V, R
L
= 16
Ω.
(5) V
CC
= 5 V, R
L
= 32
Ω
.
handbook, halfpage
−
100
−
80
−
60
−
40
−
20
MGD901
10
(2)
10
2
10
3
10
4
f (Hz)
10
5
(4)
(5)
(1)
(3)
α
cs
(dB)
Fig.18 SVRR as a function of frequency.
V
CC
= 7.5 V, R
L
= 4
Ω
,R
s
= 0
Ω
, V
r
= 100 mV.
(1) G
v
= 24 dB.
(2) G
v
= 20 dB.
(3) G
v
= 0 dB.
handbook, halfpage
−
80
−
60
−
40
−
20
MGD902
10 10
2
10
3
SVRR
(dB)
f (Hz)
10
4
10
5
(1)
(2)
(3)
Fig.19 P
o
as a function of V
CC
.
THD = 10%.
(1) R
L
= 4
Ω
.
(2) R
L
= 8
Ω
.
(3) R
L
= 16
Ω
.
handbook, halfpage
0
(1) (2) (3)
4 8
Po
(W)
VCC (V)
16
2
0
1.6
12
1.2
0.8
0.4
MGD903
Fig.20 Worst case power dissipation as a function
of V
CC
.
(1) R
L
= 4
Ω
.
(2) R
L
= 8
Ω
.
(3) R
L
= 16
Ω
.
handbook, halfpage
0
3
2
VCC (V)
1
0
4 8
(1) (2) (3)
16 12
MGD904
P
(W)