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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 kΩ 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 − 816mA
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 −µV
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 kΩ
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 µV
Mute position
V
O
output voltage in mute position V
5
≤ 0.3 V; V
I
= 600 mV −− 30 µV
DC volume control
φ gain control range 75 80 − dB
I
5
control current V
5
= 0 V 60 70 80 µA