Philips TDA7056A DC volume control TDA7056A

July 1994 5

Philips Semiconductors Product speciﬁciation

3 W BTL mono audio output ampliﬁer with

DC volume control TDA7056A

CHARACTERISTICS

VP = 12 V; f = 1 kHz; RL = 16 Ω; Tamb = 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 RL.

2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 Ω and bandwidth = 5 kHz.

3. The ripple rejection is measured with RS = 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 RS = 5 kΩ unweighted.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

VPpositive supply voltage range 4.5 −18 V

IPtotal quiescent current VP = 12 V; RL = ∞; note 1 −816mA

Maximum gain (V5 = 1.4 V)

POoutput power

THD = 10%; RL = 16 Ω3 3.5 −W

THD = 10%; RL = 8 Ω− 5.2 −W

THD total harmonic distortion PO = 0.5 W −0.3 1 %

Gvvoltage gain 34.5 35.5 36.5 dB

VIinput signal handling V5 = 0.8 V;THD < 1% 0.5 0.65 −V

Vno(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

|Voff|DC output offset voltage −0 150 mV

ZIinput impedance pin 3 15 20 25 kΩ

Minimum gain (V5 = 0.5 V)

Gvvoltage gain −−44 −dB

Vno(rms) noise output voltage (RMS value) note 4 −20 30 µV

Mute position

VOoutput voltage in mute position V5≤ 0.3 V; VI = 600 mV −− 30 µV

DC volume control

φgain control range 75 80 −dB

I5control current V5 = 0 V 60 70 80 µA