TDA7245 Datasheet, PDF (8/11 Pages) STMicroelectronics – 5W AUDIO AMPLIFIER WITH MUTING AND STAND-BY

TDA7245
Figure 16: Ipin4 (muting) vs. Supply Voltage
Figure 17: Ipin5 (St-By) vs. Supply Voltage
Figure 18: Quiescent Current (St-By) vs. Supply
Voltage
Figure 19: Output Attenuation vs. Vpin5
Figure 20: Quiescent Current vs. Vpin5
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MUTING / STAND- BY
The muting function allows to inhibit the output
signal through an external control signal.
It can be used in many cases, when a temporary
inhibition of the output signal is requested, for ex-
ample:
– in switch-on condition, to avoid preamplifier
power-on transients
– during switching at the input stages
– during the receiver tuning.
The stand-by function is very useful and permits a
complete turn ON/OFF of the device through a
low power signal, which can be provided by a µP.