TDA7498L Datasheet, PDF (19/27 Pages) STMicroelectronics – 80 watt + 80 watt dual BTL class-D audio amplifier

TDA7498L
Applications information
The protection functions of the TDA7498L are enabled by pulling down the voltages of the
STBY and MUTE inputs shown in Figure 21. The input current of the corresponding pins
must be limited to 200 µA.
Table 7. Mode settings
Standby
Mute
Mode
L ⁽¹⁾
H ⁽¹⁾
STBY
Play
H
1. Drive levels defined in Table 6: Electrical specifications on page 9
Figure 21. Standby and mute circuits
MUTE
X (don’t care)
L
H
Standby
3.3 V
0V
Mute
3.3 V
0V
R2
30 kΩ
R4
30 kΩ
C7
2.2 µF
C15
2.2 µF
STBY
TDA7498L
MUTE
Figure 22. Turn on/off sequence for minimizing speaker “pop”
Doc ID 16504 Rev 3
19/27