TDA2040 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TDA2040 Datasheet PDF : 16 Pages
| |||
TDA2040
Applications
3.3
3.3.1
3.3.2
3.3.3
Practical considerations
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.
Assembly suggestion
No electrical isolation is needed between the package and the heatsink with single supply
voltage configuration.
Application suggestions
The recommended values of the components are those shown in the 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
Smaller than
recommended value recommended value
R1
R2
R3
R4
C1
C2
C3, C4
C5, C6
C7
22 kΩ
680 Ω
22 kΩ
4.7 Ω
1 µF
22 µF
0.1 µF
220μF
0.1μF
Non-inverting Increase in input
input biasing impedance
Decrease in input
impedance
Closed-loop
gain setting
Decrease in gain (1)
Increase in gain
Closed-loop
gain setting
Increase in gain
Decrease in gain (1)
Frequency
stability
Danger of oscillation at
high frequencies with -
inductive loads
Input DC
decoupling
-
Increase in
low-frequency cut-off
Inverting DC
decoupling
-
Increase in
low-frequency cut-off
Supply voltage
bypass
-
Danger of oscillation
Supply voltage
bypass
-
Danger of oscillation
Frequency
stability
-
Danger of oscillation
1. The value of closed loop gain must be higher than 24 dB
Doc ID 1460 Rev 6
13/16
Share Link: 