1998 Feb 23 6
Philips Semiconductors Product specification
3 W mono BTL audio amplifier with DC
volume control
TDA7056AT
CHARACTERISTICS
V
P
= 12 V; V
DC
= 1.4 V; f = 1 kHz; R
L
=16Ω; T
amb
=25°C; unless otherwise specified (see Fig.14).
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
L
.
2. The noise output voltage (V
n(o)(rms)
) at f = 500 kHz, is measured with R
s
=0Ω and B = 5 kHz.
3. The ripple rejection is measured with R
s
=0Ω and f = 100 Hz to 10 kHz. The ripple voltage (V
ripple
= 200 mV RMS)
is applied to the positive supply rail.
4. The noise output voltage (V
n(o)(rms)
) is measured with R
s
=5kΩ unweighted.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
V
P
supply voltage 4.5 − 18 V
I
q(tot)
total quiescent current R
L
= ∞; note 1 − 816mA
Maximum gain (V
7
= 1.4 V)
P
o
output power THD = 10%; R
L
=16Ω 3 3.5 − W
THD total harmonic distortion P
o
= 0.5 W − 0.3 1 %
G
v(max)
maximum total voltage gain 34.5 35.5 36.5 dB
V
i(rms)
input signal handling (RMS value) V
VC
= 0.8 V; THD < 1% 0.5 0.65 − V
V
n(o)(rms)
noise output voltage (RMS value) f = 500 kHz; note 2 − 210 −µV
B bandwidth at −1dB − 0.02 to 300 − kHz
SVRR supply voltage ripple rejection note 3 38 46 − dB
∆V
OS
DC output offset voltage V
17
− v
14
−0 150 mV
Z
i
input impedance (pin 3) 15 20 25 kΩ
Minimum gain (V
7
= 0.5 V)
G
v
voltage gain −−44 − dB
V
o(n)(rms)
noise output voltage (RMS value) note 4 − 20 30 µV
Mute position
V
o(mute)
output voltage in mute position V
VC
≤ 0.3 V;
V
I
= 600 mV; note 4
− 35 45 µV
DC volume control
∆G
v
voltage gain control range 75 80 − dB
I
VC
control current V
VC
=0V 60 70 80 µA
