TDA7491P STMicroelectronics, TDA7491P Datasheet - Page 32

• Manufacturer Part Number: TDA7491P
• Description: IC, AMP, AUDIO, CLASS D, 36POWERSO
• Manufacturer: STMicroelectronics

Specifications of TDA7491P

• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 10W
• Supply Voltage Range: 5V To 18V
• Thd + N: 0.1% @ 1W, 6ohm, VCC=11V
• Load Impedance: 8ohm
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes

Applications information
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7.1
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Applications information
Mode selection
The three operating modes of the TDA7491P are set by the two inputs STBY (pin 20) and
MUTE (pin 21).
The protection functions of the TDA7491P are realized by pulling down the voltages of the
STBY and MUTE inputs shown in
must be limited to 200 µA.
Table 7.
1. Drive levels defined in
Figure 50. Standby and mute circuits
Figure 51. Turn-on/off sequence for minimizing speaker “pop”
Standby
Mute
Play
Standby mode: all circuits are turned off, very low current consumption.
Mute mode: inputs are connected to ground and the positive and negative PWM
outputs are at 50% duty cycle.
Play mode: the amplifiers are active.
Mode
Mode settings
0 V
0 V
Table 5: Electrical specifications on page 10
Standby
Mute
3.3 V
3.3 V
Doc ID 13540 Rev 4
L
H
H
(1)
(1)
Figure
R2
30 kΩ
R4
30 kΩ
50. The input current of the corresponding pins
STBY
C7
2.2 µF
C15
2.2 µF
STBY
MUTE
X (don’t care)
L
H
TDA7491P
MUTE
TDA7491P