TDA7297SA

4/11

Figure 2. Microprocessor Driving Signals

B) Low Cost Application

In low cost applications where the

µP is not present, the suggested circuit is shown in fig.3.

The St-by and mute terminals are tied together and they are connected to the supply line via an external voltage

divider.

The device is switched-on/off from the supply line and the external capacitor C4 is intended to delay the St-by

and mute threshold exceeding, avoiding "Popping" problems.

(mV)

pin 7

(mA)

ST-BY

MUTE

PLAY

MUTE

ST-BY

1.8

0.8

pin 6

4.1

2.3

OFF

OFF

D96AU259/mod

(V)

2.9

1.3