July 1994
5
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with
DC volume control
TDA7056A
CHARACTERISTICS
V
P
= 12 V; f = 1 kHz; R
L
= 16
Ω
; T
amb
= 25
°
C; unless otherwise specified (see Fig.6)
Notes to the characteristics
1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by R
L
.
2. The noise output voltage (RMS value) at f = 500 kHz is measured with R
S
= 0
Ω
and bandwidth = 5 kHz.
3. The ripple rejection is measured with R
S
= 0
Ω
and f = 100 Hz to 10 kHz. The ripple voltage of 200 mV (RMS value)
is applied to the positive supply rail.
4. The noise output voltage (RMS value) is measured with R
S
= 5 k
Ω
unweighted.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
positive supply voltage range
4.5
−
18
V
I
P
total quiescent current
V
P
= 12 V; R
L
=
∞
; note 1
−
8
16
mA
Maximum gain (V
5
= 1.4 V)
P
O
output power
THD = 10%; R
L
= 16
Ω
3
3.5
−
W
THD = 10%; R
L
= 8
Ω
−
5.2
−
W
THD
total harmonic distortion
P
O
= 0.5 W
−
0.3
1
%
G
v
voltage gain
34.5
35.5
36.5
dB
V
I
input signal handling
V
5
= 0.8 V;THD
<
1%
0.5
0.65
−
V
V
no(rms)
noise output voltage (RMS value)
f = 500 kHz; note 2
−
210
−
µ
V
B
bandwidth
at
−
1 dB
−
20 Hz to
300 kHz
−
SVRR
supply voltage ripple rejection
note 3
38
46
−
dB
|
V
off
|
DC output offset voltage
−
0
150
mV
Z
I
input impedance pin 3
15
20
25
k
Ω
Minimum gain (V
5
= 0.5 V)
G
v
voltage gain
−
−
44
−
dB
V
no(rms)
noise output voltage (RMS value)
note 4
−
20
30
µ
V
Mute position
V
O
output voltage in mute position
V
5
≤
0.3 V; V
I
= 600 mV
−
−
30
µ
V
DC volume control
φ
gain control range
75
80
−
dB
I
5
control current
V
5
= 0 V
60
70
80
µ
A
