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参数资料
| 型号： | TDA7492P13TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 25 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | ROHS COMPLIANT, SSOP-36 |
| 文件页数： | 10/26页 |
| 文件大小： | 508K |
| 代理商： | TDA7492P13TR |
Applications information
TDA7492P
Doc ID 15068 Rev 3
6
Applications information
6.1
Mode selection
The three operating modes of the TDA7492P are set by the two inputs STBY (pin 20) and
MUTE (pin 21).
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.
The protection functions of the TDA7492P are realized 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 A.
Figure 21.
Standby and mute circuits
Figure 22.
Turn on/off sequence for minimizing speaker “pop”
Table 6.
Mode settings
Mode Selection
STBY
MUTE
Standby
L (1)
1.
Drive levels defined in Table 5: Electrical specifications on page 8
X (don’t care)
Mute
H (1)
L
Play
H
TDA7492P
STBY
MUTE
0 V
3.3 V
C7
2.2 F
R2
30 k
Standby
0 V
3.3 V
C15
2.2 F
R4
30 k
Mute
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