1998 Feb 23 6
Philips Semiconductors Product specification
3 W mono BTL audio amplifier with DC
volume control TDA7056ATCHARACTERISTICS
VP= 12 V; VDC= 1.4 V; f = 1 kHz; RL=16Ω; Tamb =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 RL.
2. The noise output voltage (Vn(o)(rms)) at f = 500 kHz, is measured with Rs=0Ω and B = 5 kHz.
3. 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.
4. The noise output voltage (Vn(o)(rms)) is measured with Rs=5kΩ unweighted.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
VPsupply voltage 4.5 −18 V
Iq(tot) total quiescent current RL=∞; note 1 −816mA
Maximum gain (V7= 1.4 V)
Pooutput power THD = 10%; RL=16Ω3 3.5 −W
THD total harmonic distortion Po= 0.5 W −0.3 1 %
Gv(max) maximum total voltage gain 34.5 35.5 36.5 dB
Vi(rms) input signal handling (RMS value) VVC = 0.8 V; THD<1% 0.5 0.65 −V
Vn(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 note3 38 46 −dB
∆VOSDC output offset voltage V17−v14−0 150 mV
Ziinput impedance (pin 3) 15 20 25 kΩ
Minimum gain (V7= 0.5 V)
Gvvoltage gain −−44 −dB
Vo(n)(rms) noise output voltage (RMS value) note 4 −20 30 µV
Mute position
Vo(mute) output voltage in mute position VVC ≤0.3 V;
VI= 600 mV; note4
−35 45 µV
DC volume control
∆Gvvoltage gain control range 75 80 −dB
IVC control current VVC =0V 60 70 80 µA