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