1998 Feb 23
8
NXP Semiconductors
Product specification
3 W mono BTL audio amplifier with DC
volume control
TDA7056AT
Fig.7
Gain control as a function of DC volume
control.
handbook, halfpage
MGM582
40
−
80
20
−
20
−
40
0
0
1.2
2.0
0.4
1.6
0.8
V7 (V)
gain
(dB)
−
60
Fig.8
Noise output voltage as a function of DC
volume control.
Measured with R
s
= 5 k
Ω
unweighted; f = 22 Hz to 22 kHz.
handbook, halfpage
1000
0
800
400
200
600
0
1.2
2.0
MGM583
0.4
1.6
0.8
Vn
(
μ
V)
V7 (V)
Fig.9
Input signal handling as a function of the
supply voltage.
T
amb
= 25
°
C; THD = 1%; R
L
= 16
Ω
; V
DC
= 0.8 V.
handbook, halfpage
1000
0
200
MGM584
400
600
800
0
4
20
8
12
16
Vi
(mV)
VP (V)
Fig.10 Output power as a function of the supply
voltage.
Measured at THD = 10%. The maximum output power is limited by
the maximum power dissipation and the maximum available output
current.
(1) R
L
= 8
Ω
.
(2) R
L
= 16
Ω
.
(3) R
L
= 25
Ω
.
handbook, halfpage
5
0
1
MGM585
2
3
4
0
4
20
8
12
16
Po
(W)
VP (V)
(1)
(2)
(3)
