1998 Apr 07 6
Philips Semiconductors Product specification
2× 8 W stereo BTL audio output amplifier
with DC volume control TDA7057AQ
CHARACTERISTICS
VP=12V;T
amb =25°C; fi= 1 kHz; RL=16Ω; unless otherwise specified (see Fig.13).
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 RL.
2. The noise output voltage (RMS value) at fi= 500 kHz is measured with RS=0Ω and bandwidth = 5 kHz.
3. 20 Hz to 300 kHz (typical.
4. The ripple rejection is measured with RS=0Ω and f = 100 Hz to 10 kHz. The ripple voltage (Vripple = 200 mV RMS)
is applied to the positive supply rail.
5. The channel unbalance is measured with VDC1 =V
DC2.
6. The channel unbalance at G1= 0 dB is measured with VDC1 =V
DC2.
7. The noise output voltage (RMS value) is measured with RS=5kΩ unweighted.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VPvoltage supply 4.5 −18.5 V
Iq(tot) total quiescent current VP= 12 V; RL=∞; note 1 −22 25 mA
Maximum gain; V1,7 ≥1.4 V
Pooutput power THD = 10%; RL=16Ω3.0 3.5 −W
THD = 10%; RL=8Ω− 5.3 −W
THD=10%; RL=8Ω;
V
P=15V −8−W
THD total harmonic distortion Po= 0.5 W −0.3 1 %
Gvvoltage gain 39.5 40.5 41.5 dB
Vi(rms) input signal handling (RMS value) Gv= 0 dB; THD < 1% 1 −−V
V
o(n) noise output voltage fi= 500 kHz; note 2 −210 −µV
B bandwidth at −1dB −note 3 −dB
SVRR supply voltage ripple rejection note 4 34 38 −dB
VOSDC output offset voltage |V13 -V
11| and |V10 -V
8
|− 0 200 mV
Ziinput impedance (pins 3 and 5) 15 20 25 kΩ
αcs channel separation RS=5kΩ40 −−dB
Gvchannel unbalance note 5 −−1dB
G
1
= 0 dB; note 6 −−1dB
Mute position; V1=V
7=0.4 V ±30 mV
Vo(mute) output voltage in mute position Vi= 1.0 V; note 7 −35 45 µV
DC volume control
∆Gvgain control range 68 73.5 −dB
lDC volume control current V1=V
7=0V −20 −25 −30 µA