Philips Semiconductors
Product specification
3 W mono BTL audio amplifier with DC
volume control
TDA7056AT
MGM578
handbook, halfpage
20
Iq
handbook, halfpage
(mA)
16
12
THD
(%)
10
MGM579
8
12
6
8
4
4
2
(1)
0
0
4
8
12
16
VP (V)
20
0
10
−1
1
Po (W)
10
V
5
= 1.4 V; no load.
V
DC
= 1.4 V.
(1) V
P
= 12 V; R
L
= 16
Ω.
Fig.3
Quiescent current as a function of the
supply voltage.
Fig.4 THD as a function of output power.
handbook, halfpage
8
MGM580
handbook, halfpage
100
MGM581
THD
(%)
6
RR
(dB)
80
(1)
60
(2)
4
40
2
20
(1)
(3)
0
10
10
2
10
3
10
4
f (Hz)
10
5
0
10
10
2
10
3
10
4
f (Hz)
10
5
V
P
= 12 V, P
o
= 0.5 W, V
DC
= 1.4 V.
(1) R
L
= 16
Ω.
V
P
= 12 V; R
L
= 16
Ω;
V
r
= 200 mV.
(1) V
7
= 0.3 V; R
s
= 5 kΩ.
(2) V
7
= 1.4 V; R
s
= 0
Ω.
(3) V
7
= 1.4 V; R
s
= 5 kΩ.
Fig.5 THD as a function of frequency.
Fig.6 Ripple rejection as a function of frequency.
1998 Feb 23
7
PHILIPS [ NXP SEMICONDUCTORS ]
