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Philips Semiconductors
2
8 W stereo BTL audio output amplifier
with DC volume control
CHARACTERISTICS
V
= 12 V;T
= 25 C; f
P
amb
SYMBOL
V
voltage supply
P
I
total quiescent current
q(tot)
Maximum gain; V
1,7
P
output power
o
THD
total harmonic distortion
G
voltage gain
v
V
input signal handling (RMS value)
i(rms)
V
noise output voltage
o(n)
B
bandwidth
SVRR
supply voltage ripple rejection
V
DC output offset voltage
OS
Z
input impedance (pins 3 and 5)
i
channel separation
cs
G
channel unbalance
v
Mute position; V
= V
1
V
output voltage in mute position
o(mute)
DC volume control
G
gain control range
v
l
volume control current
DC
Notes
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
2. The noise output voltage (RMS value) at f
3. 20 Hz to 300 kHz (typical.
4. The ripple rejection is measured with R
is applied to the positive supply rail.
5. The channel unbalance is measured with V
6. The channel unbalance at G
7. The noise output voltage (RMS value) is measured with R
1998 Apr 07
= 1 kHz; R
= 16 ; unless otherwise specified (see Fig.13).
i
L
PARAMETER
1.4 V
=0.4 V 30 mV
7
i
= 0
S
= 0 dB is measured with V
1
CONDITIONS
V
= 12 V; R
= ; note 1
P
L
THD = 10%; R
= 16
L
THD = 10%; R
= 8
L
THD=10%; R
= 8 ;
L
V
= 15 V
P
P
= 0.5 W
o
G
= 0 dB; THD < 1%
v
f
= 500 kHz; note 2
i
at 1 dB
note 4
V
- V
and |V
13
11
10
R
= 5 k
S
note 5
G
= 0 dB; note 6
1
V
= 1.0 V; note 7
i
V
= V
= 0 V
1
7
.
L
= 500 kHz is measured with R
and f = 100 Hz to 10 kHz. The ripple voltage (V
= V
.
DC1
DC2
= V
DC1
DC2
= 5 k unweighted.
S
6
MIN.
TYP.
4.5
22
3.0
3.5
5.3
8
0.3
39.5
40.5
1
210
note 3
34
38
- V
0
8
15
20
40
35
68
73.5
20
25
= 0
and bandwidth = 5 kHz.
S
.
Product specification
TDA7057AQ
MAX.
UNIT
18.5
V
25
mA
W
W
W
1
%
41.5
dB
V
V
dB
dB
200
mV
25
k
dB
1
dB
1
dB
45
V
dB
30
A
= 200 mV RMS)
ripple
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