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参数资料
| 型号： | TDA7293V |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| 封装： | MULTIWATT-15 |
| 文件页数： | 2/21页 |
| 文件大小： | 397K |
| 代理商： | TDA7293V |
Applications information
TDA7293
10/21
Doc ID 6744 Rev 8
4
Applications information
4.1
Applications suggestions
The recommended values of the external components are those shown on the application
circuit of Figure 1 on page 1. Different values can, however, be used and the following table
could be useful when choosing alternative values.
Figure 7.
Slave function: pin 4 (Ref to pin 8)
Table 5.
Choosing alternative component values
Component
Suggested
value
Purpose
Larger than
suggested
Smaller than
suggested
R1 (1)
1.
R1 = R3 for pop optimization
22 k
Input resistance
Increase input
impedance
Decrease input
impedance
R2
680
Closed loop gain,
set to 30 dB (2)
2.
Closed loop gain has to be 26dB
Decrease of gain
Increase of gain
R3 (1)
22 k
Increase of gain
Decrease of gain
R4
22 k
Standby time constant
Larger Standby
on/off time
Smaller standby
ON/OFF time; pop
noise
R5
10 k
Mute time constant
Larger mute
on/off time
Smaller mute
on/off time
C1
0.47
F
Input DC decoupling
-
Higher low-frequency
cutoff
C2
22
F
Feedback DC
decoupling
-
Higher low-frequency
cutoff
C3
10
F
Mute time constant
Larger mute
on/off time
Smaller mute on/off
time
C4
10
F
Standby time constant
Larger standby
on/off time
Smaller standby on/off
time; pop noise
C5
22
F (3) x N
3.
Multiply this value by the number, N, of modular parts connected
Bootstrapping
-
Signal degradation at
low frequency
C6, C8
1000
F
Supply voltage bypass -
-
C7, C9
0.1
F
Supply voltage bypass -
Danger of oscillation
MASTER
UNDEFINED
SLAVE
-VS +3V
-VS +1V
-VS
D98AU821
Note:
If in the application the speakers are
connected via long wires, it is a good rule
to add, between the output and GND, a
boucherot cell in order to avoid dangerous
spurious oscillations if the speakers
terminal are shorted.
The suggested boucherot resistor is
3.9
/2W and the capacitor is 1F.
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| TDA7293HS | 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7294V | 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7294HS | 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
| TDA7295S | 80 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM15 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7293V | 制造商:STMicroelectronics 功能描述:Audio Power Amplifier IC |
| TDA7294 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY |
| TDA7294_07 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY |
| TDA7294HS | 功能描述:音频放大器 100V, 100W DMOS AMP Up to 40V Mute STDBY RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TDA7294-HS | 制造商:STMicroelectronics 功能描述:TDA7294-HS - Bulk |
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