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參數(shù)資料
| 型號(hào)： | TDA2040V |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 22 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM5 |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 1343K |
| 代理商： | TDA2040V |
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TDA2040
Applications
Doc ID 1460 Rev 4
13/16
3.3
Pratical consideration
3.3.1
Printed circuit board
The layout shown in Figure 14 should be adopted by the designers. If different layouts are
used, the ground points of input 1 and input 2 must be well decoupled from the ground
return of the output in which a high current flows.
3.3.2
Assembly suggestion
No electrical isolation is needed between the package and the heatsink with single supply
voltage configuration.
3.3.3
Application suggestions
The recommended values of the components are those shown on application circuit of
Figure 13. However, if different values are chosen then the following table can be helpful.
Table 5.
Variations from recommended values
Component
Recommended
value
Purpose
Larger than
recommended value
Smaller than
recommended value
R1
22 k
Non-inverting
input biasing
Increase in input
impedance
Decrease in input
impedance
R2
680
Closed-loop
gain setting
Decrease in gain (1)
1.
The value of closed loop gain must be higher than 24 dB
Increase in gain
R3
22 k
Closed-loop
gain setting
Increase in gain
Decrease in gain (1)
R4
4.7
Frequency
stability
Danger of oscillation at
high frequencies with
inductive loads
-
C1
1 F
Input DC
decoupling
-
Increase in
low-frequency cut-off
C2
22 F
Inverting DC
decoupling
-
Increase in
low-frequency cut-off
C3, C4
0.1 F
Supply voltage
bypass
-
Danger of oscillation
C5, C6
220
F
Supply voltage
bypass
-
Danger of oscillation
C7
0.1
F
Frequency
stability
-
Danger of oscillation
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