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1998 Apr 07 7
Philips Semiconductors Product specification
2 × 8 W stereo BTL audio output amplifier
with DC volume control
TDA7057AQ
Fig.3 Quiescent current as a function of supply
voltage.
handbook, halfpage
04 20
V
P
(V)
40
30
10
0
20
MBG672
81216
I
q
(mA)
Fig.4 THD as a function of output power.
(1) R
L
=16Ω.
(2) R
L
=8Ω.
handbook, halfpage
12
THD
(%)
P
out
(W)
0
8
10
−2
10
−1
1
MBG675
10
4
(1) (2)
Fig.5 THD as a function of frequency.
(1) G
v
= 40 dB; P
o
= 0.5 W.
(2) G
v
= 30 dB; P
o
= 0.5 W.
handbook, halfpage
10
2
MBG674
10110
−2
10
−1
f (kHz)
THD
(%)
10
0
4
8
6
2
(2)
(1)
Fig.6 Output power as a function of supply
voltage.
THD = 10%; f = 1 kHz.
(1) R
L
=8Ω.
(2) R
L
=16Ω.
handbook, halfpage
12
0
4
8
MBG676
0204 8 12 16
P
o
(W)
V
P
(V)
(2)
(1)